dr.smith prescribes gentamicin for a patient with a serious bacterial infection . if a 750 ml bag contains 300 mg gentamicin and the patient receives 300 ml how many mg of gentamicin did tge patient receive?

Answers

Answer 1

Answer:

120 mg

Step-by-step explanation:

750 ml       300mg

300 ml         x mg

750 / 300 = 300 / x

x = (300 x 300) / 750 = 120 mg


Related Questions

Mathematics Mh Helps

Answers

Answer:

r ≥ 5

The solution includes all the numbers greater than or equal to 5.

Step-by-step explanation:

We are given an inequality and we have to solve that inequality and mark it on a graph.

The given inequality is

-1 + r ≥ 4

This is a rather simple inequality and we just need to rearrange it to get the answer.

Rearranging, we get

r ≥ 5

This represents all the numbers in the number line which are greater than 5.

This means r can take all the values greater than 5 but not which are less than 5.

593.5625 as a whole number and remainder.

Answers

Answer:

whole number: 593remainder: 0.5625

Step-by-step explanation:

Here, the "whole number" is the portion of the number to the left of the decimal point: 593.

The "remainder" is the portion left after the whole number is subtracted: 0.5625.

The table shows the value of a car as it relates to its age.

Which statements describe the value of the car as a function of x, its age in years? Check all that apply.


The relationship is quadratic.

The relationship is exponential.

The domain is {x | x < 0}.

The range is {V | 0 V 20,000}.

The value, V, is represented by the equation

V = 20,000(0.9)x.

Answers

Answer: B, D, E

Step-by-step explanation:

Using function concepts, it is found that the correct options are:

The relationship is exponential. The range is {V | 0 V 20,000}.The value, V, is represented by the equation  V = 20,000(0.9)^x.

--------------------------------

From the table, it can be seen that for each year, the value of the car is 90% of the value of the previous year, thus, the relationship is exponential.The initial value is 20,000, thus, the equation is [tex]V = 20000(0.9)^x[/tex].The domain is given by all possible input values, which is this question are the number of years, thus it is {x | x > 0}.The range is given by all possible output values, which is this question is the value of the car after each year, thus {V | 0 V 20,000}.

A similar problem is given at https://brainly.com/question/13421430

what is 3+ 11t - 9u when t = 9 and u = 11.

Answers

Answer:

3

Step-by-step explanation:

3+11t-9u=3+11(9)-9(11)=3+99-99=3

the answer would be 3.

3+11(9)-9(11) = 3

If you awnser this question please include work

Answers

Answer:

B and D

Step-by-step explanation:

2 divided by 1

1                     3

Keep Change Flip

2 *  3   =   6

1      1

3/4 divided by 2/3= 1 1/8

6 and 1 1/8 is greater than 1.

Answer:

B and D

Step-by-step explanation:

[tex]\dfrac{a}{b}\times c=\dfrac{a\times c}{b}\\\\a\times\dfrac{b}{c}=\dfrac{a\times b}{c}\\\\\dfrac{a}{b}:c=\dfrac{a}{b}\times\dfrac{1}{c}=\dfrac{a}{b\times c}\\\\a:\dfrac{b}{c}=a\times\dfrac{c}{b}=\dfrac{a\times c}{b}\\\\\dfrac{a}{b}\times\dfrac{c}{d}=\dfrac{a\times c}{b\times d}\\\\\dfrac{a}{b}:\dfrac{c}{d}=\dfrac{a}{b}\times\dfrac{d}{c}=\dfrac{a\times d}{b\times c}\\\\============================[/tex]

[tex]\bold{A}\\\\\dfrac{1}{3}\times2=\dfrac{1\times2}{3}=\dfrac{2}{3}<1\\\\\bold{B}\\\\2:\dfrac{1}{3}=2\times\dfrac{3}{1}=2\times3=6>1\\\\\bold{C}\\\\\dfrac{1}{4}\times\dfrac{2}{3}=\dfrac{1\times2}{4\times3}=\dfrac{2}{12}<1\\\\\bold{D}\\\\\dfrac{3}{4}:\dfrac{2}{3}=\dfrac{3}{4}\times\dfrac{3}{2}=\dfrac{3\times3}{4\times2}=\dfrac{9}{8}=1\dfrac{1}{8}>1\\\\\bold{E}\\\\\dfrac{2}{3}\times\dfrac{3}{4}=\dfrac{2\times3}{3\times4}=\dfrac{6}{12}<1\\\\\bold{F}\\\\\dfrac{2}{3}:\dfrac{3}{4}=\dfrac{2}{3}\times\dfrac{4}{3}=\dfrac{2\times4}{3\times3}=\dfrac{8}{9}<1[/tex]

Please help me. So many more questions but starting with this one....

Answers

Answer:

[tex]\angle CST,\angle TSC[/tex]

Step-by-step explanation:

we know that

You can name a specific angle by using the vertex point, and a point on each of the angle's rays. The name of the angle is simply the three letters representing those points, with the vertex point listed in the middle

In this problem

The vertex point is S and the points on each of the angle's rays are C and T

so

[tex]\angle z=\angle CST=\angle TSC[/tex]

therefore

[tex]\angle CST,\angle TSC[/tex]

Solution of 4 |2y-3| -1 =11 step by step

Answers

Answer:

y = 0, 3

Step-by-step explanation:

1) Add 1 to both sides.

4 ∣ 2y −3 ∣ = 11 + 1

2) Simplify 11+1 to 12.

4 ∣ 2y − 3∣ = 12

3) Divide both sides by 4.

∣ 2y − 3∣ =​​ 12 / 4

4) Simplify 12/4 to 3.

∣ 2y − 3 ∣ = 3

5) Break down the problem into these 2 equations.

2y − 3  = 3

-(2y - 3 ) - 3

6) Solve the 1st equation: 2y − 3  = 3

y = 3

7) Solve the 2nd equation: -(2y - 3 ) - 3

y = 0

8) Collect all solutions.

y = 0, 3

6) When a teacher counted her students in groups of 4, there were 2 students left over. When she counted them in groups of 5, she had 1 student left over. If 15 of her students were girls, and she had more girls than boys, how many students did she have??

This needs to be shown full work for full credit on my college math class I need help it’s due this Wednesday!!!

Answers

Answer:

The solution is that there are 26 students in her class

Step-by-step explanation:

We know that 15 of her student are girls, and since there are more girls than boys in the class, there can at most be 15+14= 29 students in her class.

We need to find a number x between 16 (in the case where there is only one boy in the class) and 29, for which x/4 gives a remainder of 2, and x/5 gives a remainder of 1.

The numbers between 16 and 29, which when divided by 4 gives a remainder of 2 are:

18, 22, and 26

You can check yourself that these give a remainder of 2.

So it is one of these numbers. But the solution must also fulfill that the number divided by 5 gives a remainder of 1.

18/5 = 15 + remainder=3

22/5 = 4 + remainder=2

26/5 = 5 + remainder=1

Thus the only possible solution is 26.

To find the total number of students, we can use modular arithmetic and the Chinese Remainder Theorem. The number of students is 40k + 27, where 'k' is an integer.

To solve this problem, we can use the concept of modular arithmetic. Let's assume the number of students as 'x'. We are given that when the students are divided into groups of 4, there are 2 students left over. This can be written as x % 4 = 2. Similarly, when the students are divided into groups of 5, there is 1 student left over, which can be written as x % 5 = 1.

To find the value of 'x', we can solve these congruences simultaneously. One way to solve this is by brute force by trying different values of 'x'. However, a more efficient approach is to use the Chinese Remainder Theorem. By solving the congruences, we get x ≡ 21 (mod 20). This means that the number of students can be expressed as x = 20k + 21, where 'k' is an integer.

Since we are given that there are 15 girls and more girls than boys, we can say that the number of boys is 'x - 15'. Substituting the value of 'x' from the previous equation, we get the number of boys as 20k + 21 - 15 = 20k + 6. Therefore, the total number of students is 20k + 21 + 20k + 6 = 40k + 27.

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A boy has 10 cookies. His sister has 2.5 times as many. How many does the sister have?

Answers

If the boy has 10, and his sister has 2 1/2 times as many as him, you would first multiply 10 times 2 to get 20. After that you would automatically 1/2 of 10 is 5, which would bring you to the conclusion that his sister has 25 cookies. Thus, you answer is 25 cookies.

Answer:

25

Step-by-step explanation:

10×2.5=25

and heres some other random stuff so brainly will let me tell you this

NEED INTELLIGENT STUDENT..ILL GIVE BRAINLEST AND EXTRA POINTS​

Answers

Answer:

y = 242.4 ft

Step-by-step explanation:

Since the lines are parallel then the angle at the right side of the triangle is 29° ( adjacent angles are congruent )

Using the sine ratio in the right triangle

sin29° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{y}{500}[/tex]

Multiply both sides by 500

500 × sin29° = y, thus

y = 242.4 ft ( to the nearest tenth )

The number of bacteria in a petri dish is multiplied by a factor of 1.2 every hour. There were initially 500
bacteria.
Which expression gives the number of bacteria after 3 hours?

Answers

The expression that gives the number of bacteria after 3 hours is

500 x  1.2³.

Given,

The number of bacteria in a petri dish is multiplied by a factor of 1.2 every hour.

There were initially 500 bacteria.

We need to find an expression that gives the number of bacteria after 3 hours.

How do we get the final value of a number that gets multiplied by 2 every interval of time?

Suppose we have a number 3 that gets multiplied by 2 every 1 minute.

So in 3 minutes, we have,

3 x 2 = 6

6 x 2 = 12

12 x 2 = 24

We see that we need to multiply the previous answer by the required factor till the required number of times.

We have,

The initial number of bacteria = 500

The number of bacteria in a petri dish is multiplied by a factor of 1.2 every hour.

This means the number of bacteria after one hour:

= 500 x 1.2

= 600 bacteria

After two hours,

= 600 x 1.2

= 720 bacteria

After 3 hours

= 720 x 1.2

= 864 bacteria

The expression that gives the number of bacteria is 500 x [tex]1.2^{h}[/tex] where h is the number of hours.

Learn more about how to write expressions where the amount gets multiplied per hour here:

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Final answer:

The number of bacteria after 3 hours, given an initial count of 500 and a growth factor of 1.2 per hour, can be calculated as 500 × 1.2^3, resulting in 864 bacteria.

Explanation:

The number of bacteria in a petri dish growing exponentially can be modeled mathematically. If the number of bacteria is multiplied by a factor of 1.2 every hour, and we began with 500 bacteria, the expression for the number of bacteria after 3 hours can be found using exponential growth formula.

To find the number of bacteria after 3 hours, we would start with the initial amount of 500 bacteria and multiply it by 1.2 for each hour that passes. Therefore, after 3 hours, the expression would be:

Number of bacteria after 3 hours = Initial number × (growth factor)number of hours = 500 × 1.23

Using a calculator, we can compute this to find:

500 × 1.23 = 500 × 1.728 = 864

Thus, there would be 864 bacteria in the petri dish after 3 hours.


Dave walked to his friend's house at a rate of 4 mph and returned back biking at a rate of 10 mph. If it took him 18 minutes longer to walk than to bike, what was the total distance of the round trip?

I need help on it

Answers

Answer:

4 miles

Step-by-step explanation:

Walking:

Distance  = d miles

Rate = 4 mph

Time = t hours

[tex]d=4\cdot t[/tex]

Biking:

Distance = d miles

Rate = 10 mph

Time [tex]=t-\dfrac{18}{60}=t-0.3[/tex] hours (convert minutes to hours)

[tex]d=10\cdot (t-0.3)[/tex]

Hence,

[tex]4t=10(t-0.3)\\ \\4t=10t-3\\ \\4t-10t=-3\\ \\-6t =-3\\ \\6t=3\\ \\t=\dfrac{3}{6}=\dfrac{1}{2}=0.5\ hour[/tex]

Therefore, the distance to friend's house is

[tex]d=4\cdot 0.5=2\ miles[/tex]

and the total distance of the round trip is

[tex]2+2=4\ miles[/tex]

86 as a fraction in simplest form

Answers

Answer:

86/1

Step-by-step explanation:

(2-4x^9+3x^3)-(7x + x^3-6 + 12x^4)

Answers

Answer:

-4x^9-12x^4+2x^3-7x+8

Answer:

=−4x9−12x4+2x3−7x+8

Step-by-step explanation:

Distribute the Negative Sign:

=2−4x9+3x3+−1(7x+x3−6+12x4)

=2+−4x9+3x3+−1(7x)+−1x3+(−1)(−6)+−1(12x4)

=2+−4x9+3x3+−7x+−x3+6+−12x4

Combine Like Terms:

=2+−4x9+3x3+−7x+−x3+6+−12x4

=(−4x9)+(−12x4)+(3x3+−x3)+(−7x)+(2+6)

=−4x9+−12x4+2x3+−7x+8

Which equation is equivalent to 3logx+log2=log3x-log2

Answers

Step-by-step explanation:

[tex]3\log x+\log2=\log3x-\log2\\\\\text{Domain:}\ x>0\\\\\text{Use}\\\\\log_ab^c=c\log_ab\\\\\log_ab+\log_ac=\log_a(bc)\\\\\log_ab-\log_ac=\log_a\left(\dfrac{b}{c}\right)\\===================\\\log x^3+\log2=\log\left(\dfrac{3x}{2}\right)\\\\\log(2x^3)=\log\left(\dfrac{3}{2}x\right)\iff2x^3=\dfrac{3}{2}x\qquad\text{subtract}\ \dfrac{3}{2}x\ \text{from both sides}\\\\2x^3-\dfrac{3}{2}x=0\qquad\text{multiply both sides by 2}\\\\4x^3-3x=0\qquad\text{use distributive property}\\\\x(4x^2-3)=0\iff x=0\ \vee\ 4x^2-3=0[/tex]

[tex]x=0\notin\ \text{Domain}\\\\4x^2-3=0\qquad\text{add 3 to both sides}\\\\4x^2=3\qquad\text{divide both sides by 4}\\\\x^2=\dfrac{3}{4}\Rightarrow x=\pm\sqrt{\dfrac{3}{4}}\\\\x=\pm\dfrac{\sqrt3}{\sqrt4}\\\\x=-\dfrac{\sqrt3}{2}\notin \text{Domain}\\\\\boxed{x=\dfrac{\sqrt3}{2}}\in \text{Domain}[/tex]

The equivalent equation to 3logx + log2 = log3x - log2 is x² = 3/4, which is derived by applying properties of logarithms such as combining log terms and setting the resulting expressions equal to each other.

The equation 3logx + log2 = log3x - log2 can be simplified using the properties of logarithms. To find the equivalent equation, we use the property that log(a) + log(b) = log(ab) and log(a) - log(b) = log(a/b). Applying these properties:

Combine the terms on the left: 3logx + log2 = log(2x³).Combine the terms on the right: log3x - log2 = log(3x/2).Set the expressions equal to each other: log(2x³) = log(3x/2).Remove the logarithms since if log(a) = log(b), then a = b: 2x³ = 3x/2.Multiply both sides by 2 to remove the fraction: 4x³ = 3x.Divide both sides by x, assuming x ≠ 0: 4x² = 3.Finally, divide by 4: x² = 3/4.The solutions are x = ±√(3/4).

The equivalent equation is x² = 3/4 or x = ±√(3/4), provided that x ≠ 0 since the logarithm of zero is undefined.

How is 0.624 written in a expanded form?

Answers

0+6/10+2/100+4/100

Hope this helped! (plz mark me brainliest)

Find X if possible please?

Answers

Check the picture below.

Naila worked 3.5 hours more than Lisa. Together, they worked a total of 18 hours. Lisa worked h hours.


h+7=18

h+3.5=18

h+(h+3.5)=18

h+(h−3.5)=18










Answers

Answer:

Lisa = 7 hours and 15 minutes

Naila = 10 hours and 45 minutes

Step-by-step explanation:

Naila = N

Lisa = L

Naila worked:

N = 3.5 + L

In total, they worked:

N + L = 18

Lisa worked:

L = h

Substitute values into the total equation

3.5 + L  + L = 18

Solve

2L = 14.5

L = 7.25 = 7 hours and 15 minutes

N = 7.25 + 3.5 = 10.75 = 10 hours and 45 minutes

Hope this helps :)

Write the equation of the line with the points (6, 6) and (-2, 1) in slope-intercept form

Answers

Answer:

y = 1x + 2

please mark me as brainliest, thank you and have a good day!

Answer:

y = 5/8x + 9/4

but it can be

y=5/8x+6

or

y=5/8x+1

Explaination:

but there can be other solutions

First let's find the slope (5/8(

(-2,1) and (6,6)

let plug those numbers in

[tex]\frac{6-1}{6-(-2)}[/tex]

which becomes

[tex]\frac{5}{8}[/tex]

that's your slope, plug that into the slop-intercept equation

y = mx + b tp y = 5/8x + b

b can be either y-values (1 or 6) but 9/4 is also an answer

Find out what make 30 with only the number 1,3,5,7,9,11,13,15

Answers

Answer:

Step-by-step explanation:

7 + 3 + 5 + 15 = 30

Answer:

Step-by-step explaination:

I would try to help u but im not big brain and i really need the points

The inside dimensions of a box are 12 inches long, 5 inches wide, and 2 inches deep. How many cubic inches does it contain?

Answers

The answer is 120 cubic inches.

There are 120 cubic inches contained inside the box.

What is meaning of volume?

The volume of space occupied by a substance or item, or the space enclosed within a container.

What is the volume of cuboid?

Volume = L * B * H (unit^3)

Given length of the cuboid = 12 inches

Given breadth of the cuboid = 5 inches

Given height of the cuboid = 2 inches

Volume of cuboid = 12 * 5 * 2 = 120 inch^3

Hence there are 120 cubic inches contained inside the box.

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does anyone have the answers for the rest of this or know the answers ?

Answers

Answer:

4.

a)  [tex]4x^4-4x^3-16x^2+16x[/tex]

b)  [tex]4x^4-4x^3-16x^2+16x[/tex]

5. Yes

Step-by-step explanation:

The distributive property is:

[tex](a+b)(c+d)=ac+ad+bc+bd[/tex]

It can be extended to a lot of terms as well.

We will use this to multiply both of the probelms shown.

4 a)

[tex](4x^2-4x)(x^2-4)=(4x^2)(x^2)-(4)(4x^2)-(4x)(x^2)+(4x)(4)=4x^4-16x^2-4x^3+16x=4x^4-4x^3-16x^2+16x[/tex]

The answer is [tex]4x^4-4x^3-16x^2+16x[/tex]

4 b)

[tex](x^2+x-2)(4x^2-8x)=(x^2)(4x^2)-(8x)(x^2)+(x)(4x^2)-(8x)(x)-(2)(4x^2)+(2)(8x)=4x^4-8x^3+4x^3-8x^2-8x^2+16x=4x^4-4x^3-16x^2+16x[/tex]

The answer is  [tex]4x^4-4x^3-16x^2+16x[/tex]

5. Yes

which line is parallel to the line given below? y= -4/3x + 1

Answers

Answer:

The line which is parallel to the given line [tex]y=-\frac{\bf 4}{\bf 3}x+{\bf 1}[/tex] is [tex]y=-\frac{\bf 4}{\bf 3}x+{\bf 2}[/tex]

Step-by-step explanation:

Given that the equation of the line is

[tex]y=-\frac{4}{3}x+1\hfill (1)[/tex]

To find the equation of the line is parallel to the given line equation.

We know that the given equation is in the slope intercept form

y=mx+c where m is the slope and c is the intercept.

Compare with given equation(1) we get

[tex]m=-\frac{4}{3}[/tex]  and c=1

Now change the y intercept c=1 to a intercept of c= 2

Therefore (1) becomes

[tex]y=-\frac{4}{3}x+2[/tex]

The above equation of the line is the parallel line to the given equation of the line

Answer:

3x - 4y = -28

Step-by-step explanation:

The school store sells packs of 12 pens for $2.40.

Select the three unit rates that describe this sale.

CLEAR CHECK

$0.20 per pen


$2.40 per pack of pens


5 pens per dollar


120 pens per $24
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CLOSE
Reference
calculator
formulas
glossary

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Language
Changes the language of the audio snippets and the glossary
ENGLISH

Answers

For this case we can express the rates as:

[tex]\frac {2.40} {12} * \frac {dollars} {pen} = 0.2 \frac {dollars} {pen}[/tex]

Option A

[tex]\frac {12} {2.40} * \frac {pen} {dollars} = 5 \frac {pens} {dollar}[/tex]

Option C

If the pen package contains 12, then the cost of the package is $2.40.

Option B

Answer:

Option A, B, C

Answer: 1, 2, and 3

Step-by-step explanation: I did the question

I WILL MARK BRAINLIST
Which problem can be solved by performing this multiplication? 3/4×8/9

Answers

The answer is 4/9

Have a great day!!

Final answer:

To solve the multiplication problem 3/4 × 8/9, multiply the numerators and denominators, then simplify the fraction.

Explanation:

To solve the multiplication problem 3/4 × 8/9, we multiply the numerators (3 × 8) to get 24, and multiply the denominators (4 × 9) to get 36. So the result of the multiplication is 24/36. To simplify the fraction, we find the greatest common divisor of 24 and 36, which is 12. Dividing both the numerator and denominator by 12, we get 2/3. Therefore, the answer to the problem is 2/3.

13. Describe the number of solutions for the equation.

5(x – 9) = 5x (1 point)
no solution
one solution
infinite solutions
14. Describe the number of solutions for the equation.

–2(x – 1) = 2x – 2 (1 point)
infinite solutions
one solution
no solution
15. Solve the equation.

3x + 6 = 9 (1 point)
15
9
5
1
16. Solve the equation.

r over 4 – 1 = 4 (1 point)
1.3
0.8
12
20
17. Solve the inequality.

9x < 72 (1 point)
x < 8
x < –8
x < 63
x < 81
need done asap

Answers

Answer:

A)  The equation has no solution

B ) The equation has one solution

C ) The solution of equation is 1

D ) The solution of equation is 20

E ) The solution of inequality is  x [tex]<[/tex] 8

Step-by-step explanation:

Given as :

A ) The equation is written as

5 ( x - 9 ) = 5 x

So, solving the equation

i. e  5 x - 5 × 9 = 5 x

or, , (5 x - 5 x) - 45 = 0

or, (0) - 45 = 0

∵ The equation do not have any variable terms

So, the equation has no solution

B) The equation is written as

- 2 ( x - 1 ) = 2 x - 2

So, solving the equation

i.e - 2 x + 2 = 2 x - 2

or, ( - 2 x - 2 x ) = - 2 - 2

or, - 4 x = - 4

∴ x = [tex]\dfrac{-4}{-4}[/tex]

I.e x = 1

So, The equation has one solution

C) The equation is written as

3 x + 6 = 9

So, solving the equation

I.e 3 x = 9 - 6

or, 3 x = 3

∴ x = [tex]\dfrac{3}{3}[/tex]

I.e x = 1

So, The solution of equation is 1

D) The equation is written as

[tex]\dfrac{x}{4}[/tex] - 1 = 4

Or, [tex]\dfrac{x}{4}[/tex] = 1 + 4

or, [tex]\dfrac{x}{4}[/tex] = 5

∴ x = 5 × 4

I.e x = 20

So, The solution of equation is 20

E) The equation of inequality is written as

9 x [tex]<[/tex] 72

Or, x [tex]<[/tex] [tex]\dfrac{72}{9}[/tex]

∴  x [tex]<[/tex] 8

So, The solution of inequality is  x [tex]<[/tex] 8

Hence , A)  The equation has no solution

B ) The equation has one solution

C ) The solution of equation is 1

D ) The solution of equation is 20

E ) The solution of inequality is  x [tex]<[/tex] 8

Answer

If the volume of the pyramid shown is 108 inches cubed, what is the area of its base?

Answers

The question is missing the figure. So, the figure is attached below.

Answer:

The area of the base of the pyramid is 36 square inches.

Step-by-step explanation:

Given:

Volume of the pyramid is, [tex]V=108\ in^3[/tex]

The height of the pyramid is, [tex]h=9\ in[/tex]

Let the area of the base be 'A'.

So, the volume of the pyramid is given as:

[tex]V=\frac{1}{3}Ah[/tex]

Rewrite the given formula in terms of 'A'. This gives,

[tex]A=\frac{3V}{h}[/tex]

Now, plug in 108 for 'V', 9 for 'h' and solve for 'A'. This gives,

[tex]A=\frac{3\times 108}{9}\\\\A=3\times 12\\\\A=36\ in^2[/tex]

Therefore, the area of the base of the pyramid is 36 square inches.

While testing a new pesticide, an agricultural scientist uses two functions to predict the yields of two same-sized potato farms that have different soil conditions. The scientist's predicted yield, in tons, of the first farm can be represented by the following function, where x is the liters of pesticide he uses per acre of the farm. His predicted yield, in tons, of the second farm can be represented by the following function, where x is the liters of pesticide he uses per acre of the farm. If the scientist uses the same amount of pesticide on the two farms, select the function that accurately represents the predicted combined yield from both farms.
f(x)= -2.43x^2+10.37x+9 and g(x)= -3.43^2+13x+25


A. h(x)= -5.86x^2 + 23.37x + 34
B. h(x)= -5.86x^2 + 2.63x + 34
C. h(x)= -x^2 + 2.63x + 16
D. h(x)= x^2 + 2.63x - 16

Answers

Answer:

A. h(x)= -5.86x^2 + 23.37x + 34

Step-by-step explanation:

If the scientist uses the same amount of pesticide on the two farms then the x's of the functions are the same.

Then, the combined yield [tex]h(x)[/tex] of the two farms is just the yield of the first farm plus the yield of the second farm:

[tex]h(x)=f(x)+g(x)[/tex].

Now, since

[tex]f(x)= -2.43x^2+10.37x+9[/tex]

and

[tex]g(x)= -3.43x^2+13x+25[/tex],

then

[tex]h(x)= (-2.43x^2+10.37x+9)+(-3.43x^2+13x+25)[/tex]

we add the coefficients of the  corresponding terms to get:

[tex]h(x)= (-2.43x^2-3.43x^2)+(10.37x+13x)+(9+25)[/tex]

[tex]\boxed {h(x)=-5.86 x^2 + 23.37 x + 34.}[/tex]

Which is choice A.

For a circle with a radius of 15 cm, what is the length of an arc intercepted by an angle measuring 120°?

Answers

Answer: 31.43 cm

Step-by-step explanation:

The length of an arc  is calculated using the formula:

[tex]\frac{theta}{360}[/tex] X 2[tex]\pi[/tex]r

where : theta is the angle in degree

r = radius

If the angle is given in Radian , the length can be calculated using the formula:

L = r∅

Since , the angle is given in degree , we will use the first formula.

L = [tex]\frac{theta}{360}[/tex] X 2[tex]\pi[/tex]r

L = [tex]\frac{120}{360}[/tex] X 2 X π X 15

L = [tex]\frac{1}{3}[/tex] X 2 X [tex]\frac{22}{7}[/tex] X 15

L = [tex]\frac{660}{21}[/tex]

L = 31.42857143

L ≈ 31.43 cm

Solve for z.
In 63 = In z + In 7

Answers

ln z + ln 7 = ln 63

When adding two logarithms of the same base, you can combine them into a single logarithm where the input is the product of both previous inputs

ln 7z = ln 63

Take the exponential of e to both sides

7z = 63

Divide both sides by 7

z = 9

Let me know if you need any clarifications, thanks!

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