Consider the graph of function f below select the true statement

Consider The Graph Of Function F Below Select The True Statement

Answers

Answer 1

Answer:

The answer is C, the graph has the y intercept of 2

Step-by-step explanation:

You can see from the graph that the line intercepts the y axis at 2

It wouldn't be the slope of 1/2 because that choice isn't negative and this is a decreasing/negative graph


Related Questions

The Pines Golf Course is offering free ice cream cones to golfers who hit their tee shot on the green at hole 7 The following bar graph summarizes the tee shots from this morning.

Answers

Answer:

17%

Step-by-step explanation:

4/24=1.6666666667 rounded up is 17%

The probability that the next tee shot ends up on green is 1 / 6.

What is probability?

It's a field of mathematics that studies the probability of a random event occurring. From 0 to 1, the value is expressed.

P(Event) = Favourable outcomes / Total no. of outcomes

Total no. of shots taken = 4 + 5 + 7 + 3 + 5 = 24

Shots that landed on Green = 4

P( Shot will land on green) = 4 / 24 = 1 / 6

Hence, the probability that the next show will land on green is 1/6.

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The diaper service where you work bills customers once a week. Each week, it charges 30¢ each for the first 75 diapers used, and 25¢ each for any additional diapers. How much should you bill a family that used 100 diapers last week?
A.

$18.75
B.

$22.50
C.

$25.00
D.

$28.75
E.

$30.00

Answers

The answer is 28.75

Evaluate [16 ÷ (2 + 3 • 2)] + [4 • (36 – 25)]

Answers

Answer:

46

Step-by-step explanation:

There is an open + in the middle. It does not have any brackets around it. Therefore you do it at the very last.

Left side of the plus sign.

[16 ÷ (2 + 3*2)] Do the multiplication inside the parenthesis ( 2*3) first.

= [16 ÷ (2 + 6)] Add inside the parenthesis.

= [16 ÷ 8 ]         Do the division

= 2

Right side of the open plus sign

[4 * (36 - 25)]   Do the subtraction first.

[4 * 11 ]             Do the multiplication

44

Now combine both right and left side.

2 + 44

46

The answer is 46.

46

I don’t think I helped

How many multiples of $8$ are between $100$ and $500$?

Answers

Answer:

There are 50 multiples of 8 between 100 and 500

Step-by-step explanation:

1. We need to find out the multiple of 8 closest and higher than 100.

......80, 88, 96, 104, 112, 120..... It's 104

2. We need to find out the multiple of 8 closest and lower than 500.

....480, 488, 496, 504, 512, 520......It's 496

3. Now, we use 104 and 496, this way:

(496 - 104)/8 + 1 =

392/8 + 1 =

49 + 1 = 50

There are 50 multiples of 8 between 100 and 500

Answer:

50

Step-by-step explanation:

The smallest multiple of 8 in this range is 13 ∙ 8 = 104, and the largest is 62 ∙ 8 = 496. The number of multiples of 8 in this range is the same as the number of numbers in the list

13, 14, 15, ...,60, 61, 62.

To count these, we subtract 12 from each, obtaining the new list

1, 2, 3, ..., 48, 49, 50,

which clearly contains 50 integers. There is one number in the original list for each number in the revised list, so the original list has 50 numbers in it, and there are 50 multiples of 8 between 100 and 500.

A park ranger is looking out from their station at a 30 degree angle , angle of depression. The ranger is 80 feet above the ground.how far is it from the ranger up in the station down the fire?

Answers

Answer:

[tex]\boxed{\text{160 ft}}[/tex]

Step-by-step explanation:

The angle of depression from the ranger at point A and the angle of elevation from the fire on the ground at Point C are congruent (interior opposite angles).

The distance from the ranger up in the tower to the fire on the ground is the hypotenuse AC  of the right triangle ABC.

sin 30 = 80/AC

AC  = 80/sin30 = 80/0.5 = 160 ft

The distance is [tex]\boxed{\textbf{160 ft}}[/tex]

what is the answer to this problem
3= 1/5 k-2​

Answers

Answer:

k = 25

Step-by-step explanation:

Step 1: Isolate k by adding 2 on both sides.

1/5k = 5

Step 2: Simplify by multiplying 5 on both sides.

k = 25

What is the slope of the line that contains the points (4,8) and (9,8)? What type of line is it?

A. The line has no slope; it's a vertical line.
B. Slope = 0; horizontal line
C. The line has no slope; it's a horizontal line.
D. Slope = 0; vertical line

Answers

I believe the answer is B

Final answer:

The slope of the line containing the points (4,8) and (9,8) is 0, indicating that it is a horizontal line. The correct answer is B. Slope = 0; horizontal line.

Explanation:

The slope of a line is calculated by taking the difference in the y-values of two points on the line (rise) and dividing by the difference in the x-values (run). Using the points (4,8) and (9,8), we can calculate the slope as follows:

Change in y (rise) = 8 - 8 = 0Change in x (run) = 9 - 4 = 5

Slope (m) = rise / run = 0 / 5 = 0.

Since there is no change in the y-value as we move from one point to the other, the line is horizontal. Thus, the line has a slope of 0. The correct answer to the student's question is B. Slope = 0; horizontal line.

Use the remainder theorem to find the remainder for (x ^5 + 32) divided by (x+2) and state whether or not the binomial is a factor of the polynomial A:0; yes B: 0;no C: 1; yes D: -1; no

Answers

[tex]x+2[/tex] is a factor of [tex]x^5+32[/tex] because (by the remainder theorem) the remainder upon dividing [tex]x^5+32[/tex] by [tex]x+2[/tex] is [tex](-2)^5+32=0[/tex].

There's also the sum of fifth powers formula,

[tex]a^5+b^5=(a+b)(a^4-a^3b+a^2b^2-ab^3+b^4)[/tex]

ANSWER

The correct answer is A

EXPLANATION

The given polynomial is

[tex]p(x) = {x}^{5} + 32[/tex]

According to the remainder theorem, if p(x) is divided by x+2 the remainder is p(-2).

If the remainder is zero then x+2 is a factor of f(x).

We plug in x=-2 into the function to obtain;

[tex]p( - 2) = { (- 2)}^{5} + 32[/tex]

[tex]p( - 2) = - 32 + 32[/tex]

[tex]p( - 2) = 0[/tex]

Since the remainder is zero, x+2 is a factor.

The correct answer is A

What value can be written on the blank line to make the expressions equivalent?

48 + 54 = x(8+9)

Answers

Answer:

x=6

Hope This Helps!   Have A Nice Day!!

Answer:

x=6

Step-by-step explanation:

[tex]48+54=x(8+9)\\\\102=8x+9x\\\\102=17x\\\\6=x[/tex]

Elizabeth is getting ready to run a marathon why is her thinking incorrect

Answers

I believe we would need some more information to help you answer

Answer:

ATP is an unstable molecule

Explanation:

Recall that ATP and ADP are too unstable to serve as long-term energy storage units. In contrast, glucose has a stable molecular structure, so it stores energy more efficiently than ATP.

#pennfosternotes

See page Biology (v2): Lesson 2: Page 65 in Biology_Lesson 2.pdf

Thanks so much! I hope this helps! =)

A box of pencils costs $10.The total cost (c) as a function of the number of boxes (b) is expressed as c = f(b) = 10b. What is the domain of this function?
A.
all positive integers and zero
B.
all real numbers
C.
all real numbers except 0
D.
all positive real numbers except 10

Answers

Answer:

All positive integers and zero

A is correct

Step-by-step explanation:

A box of pencils costs $10

The total cost (c) as a function of the number of boxes (b) is expressed as

c = f(b) = 10b

The function, f(b) = 10b

b is independent variable and c is dependent variable.

For any function find domain using independent variable.

b represents number of boxes.

Number of boxes neither be negative nor decimal.

Possible value of b: {0,1,2,3,4,5,.......}

All positive integers and zero.

Domain: All positive integers and zero

Jenny, who rides a moped, takes 2 hours less to travel 60 miles than Maureen takes to travel 50 miles on her bicycle. Jenny travels 10 miles per hour faster than Maureen. (Hint: speed = distance ÷ time.)

Answers

Answer:

See below

Step-by-step explanation:

Givens

Jenny's Stats

t = m - 2

d = 60 miles

r = r1 + 10

Maureen's stats

d = 50 miles

t = m

r = r1

=======

60 = (r1 + 10) * (m - 2)

50 = r1 * m

m = 50/r1

60 = (r1 + 10)* (50/r1 - 2)  

60 = 50 + 500/r1 - 2r1 - 20

60 = 30 + 500/r1 - 2r1

60r1 = 30r1 + 500 - 2*r1^2

30r1 = 500 - 2r1^2

2r1^2 + 30r1 - 500

This quadratic factors into

2 (r1 - 10)(r1 + 25)

r1 = 10 mph             The 25 has no meaning.

m = 50/r1

m = 50/10

m = 5 hours

m - 2 = 3 hours.

What is the coefficient in the expression 4x^2+3x-3

Answers

Answer:

The coefficients would be 4 and/or 3.

Step-by-step explanation:

The coefficient is always the number before the variable.

Answer:

a = 4, b = 3, and c = -3

Step-by-step explanation:

A quadratic equation of a variable is an equation that has the general form of:

[tex]ax^{2}+bx+c=0[/tex], [tex]a\neq 0[/tex]

Where x is the variable, and a, b and c constants; a is the quadratic coefficient (other than 0), b the linear coefficient and c is the independent term. This polynomial can be interpreted by means of the graph of a quadratic function, that is, by a parabola. This graphical representation is useful, because the abscissas of the intersections or point of tangency of this graph, in the case of existing, with the X axis are the real roots of the equation. If the parabola does not cut the X axis the roots are complex numbers, they correspond to a negative discriminant.

So, the coefficients are  a = 4, b = 3, and c = -3

Need Help Please, This One Is A Bit Difficult.

Answers

Answer: 432 units²

Step-by-step explanation:

The figure is composed by two trapezoids.

The formula for calculate the area of a trapezoid is:

[tex]A=\frac{h}{2}(B+b)[/tex]

Where "B" is the larger base, "b" is the smaller base and "h" is the height.

Let be [tex]A_f[/tex] the area of the figure, [tex]A_1[/tex] the area of the trapezoid on the left and [tex]A_2[/tex] the area of the trapezoid of the right. Then the area of the figure will be:

 [tex]A_f=A_1+A_2[/tex]

[tex]A_f=\frac{h_1}{2}(B_1+b_1)+\frac{h_2}{2}(B_2+b_2)[/tex]

Substituting values, you get:

[tex]A_f=\frac{16units}{2}(25units+4units)+\frac{10units}{2}(25units+15units)=432units^2[/tex]

Answer:

Area of given figure = 432 unit ²

Step-by-step explanation:

Points to remember

Area of trapezoid = h(a + b)/2

Where h - height  and a and b  are two parallel sides

To find the area of given figure

It is given two trapezoid

Area of 1st trapezoid

h = 16, a = 25 and b = 4

Area = h(a+ b)/2

 = 16(25 + 4)/2

 = 232 units ²

Area of 2nd trapezoid

h = 10, a = 25 and b = 15

Area = h(a+ b)/2

 = 10(25 + 15)/2

 = 200 units ²

Total area = 232 + 200 = 432 units²

12
Which polynomial function has zeros at -3, 0, and 4?
1 f(x) = (x + 3)(x2 + 4)
2 f(x)=(x2 – 3)(x – 4)
3 F(x) = x(x + 3)(x – 4)
4 f(x) = x(x - 3)(x +4)

Answers

Answer:

3

Step-by-step explanation:

Given a polynomial with zeros x = a, x = b, x = c

Then the factors are (x - a), (x - b) and (x - c)

and the polynomial is the product of the factors

f(x) = k(x - a)(x - b)(x - c) ← k is a multiplier

here the zeros are x = - 3, x = 0, x = 4, thus the factors are

(x - (- 3)), (x - 0) and (x - 4), that is

(x + 3), x and (x - 4)

let k = 1, then

f(x) = x(x + 3)(x - 4) → 3

Answer:

F(x) = x(x + 3)(x – 4)

Step-by-step explanation:

The polynomial function has zeros at -3, 0, and 4  is F(x) = x(x + 3)(x – 4)

x(x + 3)(x – 4), set each part = 0 to find the solutions

x(x + 3)(x – 4) = 0

x = 0

x + 3 = 0; x = -3

x - 4 = 0; x = 4

meg has 47 baby carrots to share equally with 6 friends. she puts an equal number of carrots on 6 plates.how manycarrots are left?​

Answers

Answer:

5 carrots

Step-by-step explanation:

Since there are 6 friends, find the factor closest to 47. The closest one would be 6*7=42. Thus, the answer is 5 because every friend gets 7 carrots.

Find the sum of the first 10
terms.
8,20,32,44,...

Answers

8,20,32,44,56,68,80,72,84 and 98

The sum of first 10 terms is 620.

What is arithmatic progression?

Arithmetic Progression (AP) is a numerical series in which the difference between any two subsequent numbers is always the same.

How to find the sum?

Here a1= 8,a2 = 20,a3  = 32 and a4= 44

Find the difference between two terms

a2 - a1 = 20 - 8 = 12

a3 - a2 = 32 - 20 = 12

a4 - a3 = 44 - 32 = 12 sum of n terms is = n/2[2a1 + (n-1)d]

For the given sequence we have n = 10, a1= 8 and d = 12

substituting values of a1 and n in S = 10/2[2x8 + (10-1)x12]

S = 5[16+9x12]

S = 5[16+108]

S = 5[124]

S = 5x124

S = 620

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Factored form of x^2+10x+5

Answers

Answer:

[tex]\large\boxed{x^2+10x+5=\left(x+5+2\sqrt5\right)\left(x+5-2\sqrt5\right)}[/tex]

Step-by-step explanation:

[tex]\text{Use the quadratic formula:}\\\\ax^2+bx+c=a\left(x-\dfrac{-b-\sqrt{b^2-4a}}{2a}\right)\left(x-\dfrac{-b+\sqrt{b^2-4ac}}{2a}\right)\\======================================[/tex]

[tex]\text{We have:}\ x^2+10x+5\to a=1,\ b=10\ \text{and}\ c=5\\\\\text{Substitute}\\\\b^2-4ac=10^2-4(1)(5)=100-20=80\\\sqrt{b^2-4ac}=\sqrt{80}=\sqrt{16\cdot5}=\sqrt{16}\cdot\sqrt5=4\sqrt5\\\\x_1=\dfrac{-10-4\sqrt5}{2(1)}=-5-2\sqrt5\\\\x_2=\dfrac{-10+4\sqrt5}{2(1)}=-5+2\sqrt5\\\\\bigg(x-\left(-5-2\sqrt5\right)\bigg)=\left(x+5+2\sqrt5\right)\\\\\bigg(x-\left(-5+2\sqrt5\right)\bigg)=\left(x+5-2\sqrt5\right)[/tex]

Use the graph , Help needed 10 points.

Answers

Hello!

The answer is:

The function is greater or equal to 0 at the points (-3,6), (-2,0), (0,6) and (4,0).

Why?

To find where the function is greater or equal to 0, we need to look (using the graph) where the function is above the x-axis

So, we can see that the function is above the x-axis from the point (-3,6)  to the point (4,0), for these points, the function is greater or equal to 0.

Hence, the function is greater or equal to 0 at the points (-3,6), (-2,0), (0,6) and (4,0), or the function is greater or equal to 0,  from -3 to 4 (x-axis values or input).

We have that:

[tex]f(-3)=6\\6\geq 0\\\\f(-2)=0\\0=0\\\\f(0)=6\\6\geq 0\\\\f(4)=0\\0=0[/tex]

Have a nice day!

what is -3×^2+1467x-86940=0 ?​

Answers

For this case we must solve the following quadratic equation:

[tex]-3x ^ 2 + 1467x-86940 = 0[/tex]

If we divide both sides of the equation by 3 we have:

[tex]-x ^ 2 + 489-28980 = 0[/tex]

The solutions will come from:

[tex]x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}[/tex]

Where:

[tex]a = -1\\b = 489\\c = -28980[/tex]

Substituting:

[tex]x = \frac {-489 \pm \sqrt {(489) ^ 2-4 (-1) (- 28980)}} {2 (-1)}\\x = \frac {-489 \pm \sqrt {239121-115920}} {- 2}\\x = \frac {-489 \pm \sqrt {123201}} {- 2}\\x = \frac {-489 \pm351} {- 2}[/tex]

The roots are:

[tex]x_ {1} = \frac {-489 + 351} {- 2} = \frac {-138} {- 2} = 69\\x_ {2} = \frac {-489-351} {- 2} = \frac {-840} {- 2} = 420[/tex]

ANswer:

[tex]x_ {1} = 69\\x_ {2} = 420[/tex]

The surface area of a right cone which has a base diameter of six units and a height of eight units is:

Answers

Answer: [tex]A = 108.80\ units^2[/tex]

Step-by-step explanation:

The surface  area of right cone is calculated by the following formula

[tex]A = \pi r *\sqrt{r^2 +h^2}+\pi r^2[/tex]

Where r is the radius of the cone and h is the height

In this case we know that the diameter d of the base is:

[tex]d=2r[/tex]

So the radius is:

[tex]r=\frac{d}{2}\\\\r=\frac{6}{2}\\\\r=3\ units[/tex]

and

[tex]h=8\ units[/tex]

So the area is:

[tex]A = \pi*3 *\sqrt{3^2 +8^2}+\pi(3)^2[/tex]

[tex]A = 108.80\ units^2[/tex]

Answer:

[tex]SA=108.8 units^2[/tex]

Step-by-step explanation:

The surface area of a right cone is given by

[tex]S.A=\pi r^2+\pi rl[/tex]

The relation between the slant height l, the radius r, and the height h, is

[tex]l^2=r^2+h^2[/tex]

[tex]l^2=3^2+8^2[/tex]

[tex]l^2=9+64[/tex]

[tex]l^2=73[/tex]

[tex]l=\sqrt{73}[/tex]

[tex]S.A=\pi \times 3^2+\pi \times3\times\sqrt{73}[/tex]

[tex]S.A=\pi \times 3^2+\pi \times3\times\sqrt{73}[/tex]

[tex]SA=108.8 units^2[/tex]

In the given right triangle, find the missing length to the nearest tenth.

13.3 ft

19.4 ft

2.8 ft

31.2 ft

Answers

Answer:

A)13.3

Step-by-step explanation:

20² + y² = 24²

400 + y² = 576

y²  = 176

y=13.3

By Pythagoras theorem, in the given right triangle, the missing length to the nearest tenth is Option(A) 13.3 ft.

What is Pythagoras theorem?

According to Pythagoras theorem, the square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides.

Mathematically,

(Hypotenuse)² = (Base)² + (Height)² .

How to find the missing length of the given triangle ?

For the given triangle, length of hypotenuse is 24ft., height is 20ft and base is y ft.

Using Pythagoras theorem,

⇒ (24)² = y² + (20)²

⇒ y² = 24² - 20²

⇒ y² = 176

∴ y = √176 = 13.2665 ≈ 13.3 ft.

Thus, by Pythagoras theorem, in the given right triangle, the missing length to the nearest tenth is Option(A) 13.3 ft.

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Which of the following are true statements?

Answers

Answer: Option A and Option B.

Step-by-step explanation:

You need to remember the logarithms properties:

[tex]log(a)+log(b)=log(ab)\\\\log(a)-log(b)=log(\frac{a}{b})\\\\log(a)^b=b*log(a)[/tex]

You can observe in Option A:

[tex]logM^p=p*logM[/tex] (This is true)

You can observe in Option B:

[tex]logM+logN=log(MN)[/tex] (This is true)

You can observe in Option C:

[tex]logM-logN=log(M-N)[/tex] (This is not true)

You can observe in Option D:

[tex](logM)^p=p*logM[/tex] (This is not true)

A text message plan costs $3 per month plus $0.37 per text. Find the monthly cost for x text messages
The monthly cost of x messages is
dollars.

Answers

Answer:

y= (.37)x + 3

Step-by-step explanation:

1. Best thing to use would be y=mx + b.

2. Flat fee is $3 so that is your b.

y=mx+ 3

3. Every additional message is $0.37, that is your slope(m)

y=(.37)x + 3

4. That is your answer, x represents the number of text messages

Answer:

The monthly cost for x messages is (3 + 0.37x)$.

Step-by-step explanation:

We are given the following information in the question:

Monthly cost for text message = $3 per month

Cost of each text message = $0.37

Let x be the number of total text messages.

Monthly cost for x messages =

Formula:

[tex]\text{Monthly charges} + (\text{Text messages}\times \text{Cost of each message})\\\text{Putting the values, we get}\\= 3 + (0.37\times x)\\=3 + 0.37x[/tex]

Hence, the monthly cost for x messages is (3 + 0.37x)$.

A restaurant offers the soup of the day in 10 ounce servings. Suppose 85 customers ordered the soup of the day on Monday. To the nearest tenth, how many gallons of the soup were sold on Monday?
A) 4.8 gallons
B) 5.5 gallons
C) 6.6 gallons **
D) 7.4 gallons

Answers

Answer:

C) 6.6 gallons

Step-by-step explanation:

10oz * 85 = 850oz

There are 128 ounces in a gallon.

850/128 = 6.64

Answer:  Option 'c' is correct.

Step-by-step explanation:

Since we have given that

Number of servings = 85

Number of ounces per serving = 10 ounce

Total number of ounces would be

[tex]85\times 10\\\\=850[/tex]

As we know that

1 gallon = 128 ounces

So, Number of gallons of the soup were sold on Monday would be \

[tex]\dfrac{850}{128}\\\\=6.64\\\\\approx 6.6 \ gallons[/tex]

Hence, Option 'c' is correct.

Addition and subtraction are inverse operations.
true or false

Answers

That is very true.

In mathematics, an inverse operation is an operation that undoes what was done by the previous operation. The four main mathematical operations are addition, subtraction, multiplication, division. The inverse of addition is subtraction and vice versa. The inverse of multiplication is division and vice versa.

Final answer:

Addition and subtraction are indeed inverse operations. They are algebraic operations that do the opposite of one another and can thus 'undo' each other's effects.

Explanation:

The statement that Addition and subtraction are inverse operations is indeed true. In mathematics, an inverse operation is an operation that undoes what was done by the previous operation. In the case of addition and subtraction, they do exactly that. For instance, if you were to add 3 and 4 to get 7, you can undo this operation by subtracting 3 or 4 from 7 which will give back the other original number. Hence, addition and subtraction are deemed as inverse operations.

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PLEASE HELP Jane can make a handcrafted dream catcher in 6 days. Zena makes the same dream catcher in 4 days. If they work together making dream catchers, how many days will it take to make 15 dream catchers? A. 2. B. 15. C. 21. D. 36.

Answers

The answer is D, 36 days. In 36 days, Jane can make 6 dream catchers and Zena can make 9. 9+6=15

Answer:The correct answer is 36 days

Step-by-step explanation: Jane-1 in 6 days or 2 in 12 days..Zena-1 in 4 days or 3 in 12 days. So in 12 days together the girls can make 5 dream catchers. In 24 days they would have 10, and in 36 days they would have 15.

HELP SOON!! 20+ points to the right answers!

Answers

class b median is 80

class a median is 77

the comparison tells me in terms of the situation the data represents is that class b did better than class a

what is the slope of (1,-3) and(-1,-3)

Answers

Answer:

slope = 0

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (1, - 3) and (x₂, y₂ ) = (- 1, - 3)

m = [tex]\frac{-3+3}{-1-1}[/tex] = [tex]\frac{0}{-2}[/tex] = 0

please help me!!

A. Zara is learning about surface area and volume in math class. She begins to notice that she can apply this geometry in everyday life. When her mom makes a jelly sandwich for her lunch, Zara notices it is similar to a rectangular prism and decides to measure its dimensions. She measures the length as 13 cm, the width as 10.8 cm, and the height as 3 cm, as shown below.


What is the volume of Zara's sandwich? Show your work.

B. What is the surface area of Zara's sandwich? Show your work.

C. Zara cuts her sandwich in half down the middle, dividing it into two equal pieces. She then stacks one half of the sandwich on top of the other, as shown below.



Zara concludes that stacking the pieces like this will result in a sandwich with a greater volume and a smaller surface area than the original sandwich.

Are Zara's conclusions correct? Explain how you know, and support your explanation with mathematical evidence.

Type your answers in the box below. Make sure to label each part with A, B, and C.

Answers

Final answer:

The volume of Zara's sandwich formed as a rectangular prism, is 421.2 cm³, calculated by multiplying the sandwich's length, width, and height. The surface area is 561.6 cm² which is calculated by adding the areas of each face of the prism. When the sandwich is cut and stacked, the volume remains the same, but the surface area increases.

Explanation:

A. To find the volume of a prism (such as Zara's sandwich), we multiply the length by the width by the height. So, for Zara's sandwich, we would calculate the volume as follows (in cubic centimeters): 13cm × 10.8cm × 3cm = 421.2 cm³.

B. The surface area of a rectangular prism is calculated by 2lw + 2lh + 2wh (where l is the length, w is the width, and h is the height. Plugging in the dimensions Zara measured, we find the surface area to be: 2(13cm × 10.8cm) + 2(13cm × 3cm) + 2(10.8cm × 3cm) = 561.6 cm².

C. When Zara cuts her sandwich in half and stacks one half on top of the other, she is effectively doubling the height while keeping the length and width the same. However, since neither the volume nor surface area formulas have a square or cube factor in the height, the volume will be the same. As for the surface area, because the height is now equivalent to two sandwich halves, and the 'length' is not shared between the two halves, the surface area increases. So, Zara's conclusions are incorrect. The volume stays the same, while the surface area increases.

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a. The volume of Zara's sandwich is 421.2 cm³.

b. The surface area of Zara's sandwich is 561.6 cm².

c. Zara's conclusions are incorrect. The volume stays the same, while the surface area increases.

A. To calculate the volume of a prism (such as Zara's sandwich), multiply its length by breadth by height. So, for Zara's sandwich, the volume would be calculated as follows (in cubic centimeters): 13cm 10.8cm 3cm = 421.2 cm³.

B. A rectangular prism's surface area is computed as 2lw + 2lh + 2wh (where l is the length, w is the width, and h is the height). Using Zara's measurements, we calculate the surface area to be: 2(13cm 10.8cm) + 2(13cm 3cm) + 2(10.8cm 3cm) = 561.6 cm².

C. By cutting her sandwich in half and stacking one half on top of the other, Zara essentially doubles the height while maintaining the length and width. The volume, however, will be the same because neither the volume nor surface area formulae include a square or cube element in the height. The surface area grows since the height is now equivalent to two sandwich half and the 'length' is not split between the two halves. Zara's conclusions are thus wrong. The volume remains constant while the surface area grows.

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