Find the value of x

Answer:

The correct answer is He made a mistake in his calculations when substituting the ordered pair into the equation 5x – 2y = 6 and simplifying.

Step-by-step explanation:

I just took the test ;) good luck on yours

Answer:

He made a mistake in his calculations when substituting the ordered pair into the equation 5x – 2y = 6 and simplifying.

Step-by-step explanation:

Answer:

3n + 5

Step-by-step explanation:

You can't add 5 to 3n. So in 5 years he will 3n + 5.

José's age in 5 years will be 3n + 5, where 3n represents his current age.

If José's present age is 3n, and we want to find out how old he will be in 5 years, we need to add 5 to his current age expressed as 3n. This can be done with a simple algebraic expression:

Age in 5 years = Current Age + 5 = 3n + 5

Without the value of n, we can't calculate his exact future age, but we know that in 5 years, his age will be 5 years older than it is now.

Answer:

I believe 27%

Step-by-step explanation:

Total juniors = 8

Total students = 30

So 8 out of 30 as a percentage = 26.67

Hope this helps! :)

Answer:

Step-by-step explanation:

the average can be found by adding up all ur numbers and dividing by how many numbers u have

so her average test score is : (88 + 80) / 2 = 168/2 = 84 <==

To find Maddie's average test score, add up her scores (88+80=168) and divide by the number of tests (2). This gives us an average of 84.

The subject of this question is Mathematics, specifically the concept of calculating averages. To calculate Maddie's average test score, you'll need to add up the scores she received and then divide the sum by the number of tests she took.

In this case, Maddie earned an 88 on her first test and an 80 on her second test. You would add these two scores together (168), then divide by 2 (since she took 2 tests), which gives us an average of 84.

So, Maddie's average test score is 84.

https://brainly.com/question/31930809

#SPJ3

Answer:

72

Step-by-step explanation:

Here is the complete question: The results of a survey showed that 40% of 300 Students chose conserving natural resources as the top priority for their generation. Suppose only 24% of 300 students chose conserving natural resources. How many students chose conserving natural resources?

Given: 24% of 300 students chose conserving natural resources.

Now, finding the number of student chose conserving natural resource.

Using percentage to find the answer.

[tex]Number\ of\ student\ chose\ conserving\ natural\ resources= \frac{24}{100} \times 300[/tex]

⇒ [tex]Number\ of\ student\ chose\ conserving\ natural\ resources= 24\times 3[/tex]

∴ [tex]Number\ of\ student\ chose\ conserving\ natural\ resources= 72\ students[/tex]

Hence, there are 72 students chose conserving natural resources.

Answer:

[tex]10.3\ in^3[/tex]

Step-by-step explanation:

Orange has the shape of a ball.

The volume of a ball with radius r inches is

[tex]V=\dfrac{4}{3}\pi r^3\ in^3[/tex]

The radius of one of the oranges is 1.35 inches.

Hence, its volume is

[tex]V=\dfrac{4}{3}\cdot \pi \cdot (1.35)^3\approx \dfrac{4}{3}\cdot 3.14\cdot 2.460375=10.30077\ in^3 \approx 10.3\ in^3[/tex]

Answer:

10.3 in^3

Step-by-step explanation:

Answer:

  (x -a)^2 + y^2 = 2a^2

Step-by-step explanation:

The equation of a circle with center (h, k) and radius r is ...

  (x -h)^2 +(y -k)^2 = r^2

Here r^2 is the square of the distance between the center and the point on the circle. That can be found using the distance formula:

  d^2 = r^2 = (x2-x1)^2 +(y2 -y1)^2 = (0-a)^2 +(-a-0)^2 = 2a^2

Filling in the above formula with (h, k) = (a, 0) and r^2 = 2a^2, we find the equation to be ...

  (x -a)^2 +y^2 = 2a^2

Answer:

[tex]y=-2x+3[/tex]

Step-by-step explanation:

Given the slope of line [tex]m[/tex] is [tex]-2[/tex].

And y-intercept is [tex](0,3)[/tex]

We can write the equation of line by using the slope-intercept form.

The slope-intercept from is

[tex]y=mx+b[/tex]

Where [tex]m[/tex] is the slope of line. And [tex]b[/tex] is the y-intercept.

In our problem y-intercept is given as [tex]b=3[/tex].

Plugging these we get,

[tex]y=-2x+3[/tex]

Answer:

OPTION B:   229.28 $

Step by-step explanation:

Whenever a deposit is made the balance increases and when a withdrawal is made the balance is decreased.

So, to compute the balance on Friday, assuming that he hasn't deposited on Friday, we add all the deposits and subtract all the withdrawals.

On Monday he has 225 $. He withdraws 27.25 $. So, the balance would be: 225 - 27.25 = 197.75

On Tuesday he deposits money. So, the balance would be 197.75 + 75.5

= 273.25

On Wednesday he deposits and withdraws. So, it would be

273.25 + 32.19 - 61 . 95 = 243.49

On Thursday, he withdraws. So, the balance would be: 243.49 - 14.21

= 229.28 $ which will be the balance on Friday.

Hence, OPTION B is the answer.

Answer:

16 cups

Step-by-step explanation:

64 × .25=16

When the total amount of ice cream, 64 cups, is divided by the scoop size, which is 1/4 cup, it gives us 256. Therefore, Jerry can get 256 scoops of ice cream from each bucket.

The amount of ice cream in each bucket is given as 64 cups. Jerry's scoop holds 1/4 cup of ice cream. In order to figure out how many scoops Jerry can get from one bucket, we need to divide the total amount of ice cream (64 cups) by the amount Jerry's scoop holds (1/4 cup).

To carry out this operation, we divide 64 by 1/4 which is equivalent to multiplying 64 by the reciprocal of 1/4 (i.e., 4/1 or simply 4). This results in 64 * 4 = 256. So, Jerry can get 256 scoops of ice cream out of each bucket.

https://brainly.com/question/17205173

#SPJ12

Maricel's code will adjust the shot by 12º

Answer:

The correct angle will be 12.5 degrees.

Answer:

P(red marble) = 6÷15

Step-by-step explanation:

First, we add all of it we get 15.

Now the probability of getting a red marble will be = number of favorable outcomes ÷ total out comes.

Here the favorable outcomes to red is 6,and the total outcome is 15.

So it is 6÷15.

Now we took one marble. And kept it away.

Now the total number of outcomes are 15-1=14

Now the favorable outcomes for green is 7,snd total outcomes are 14.

So the probability is 7÷14.

Remember don't subtract the one marble u took in every similar question. Do it only if it is told to keep away the first marble you took.

Feel free to ask any further questions and also pls follow me and make this the brainliest answer.

Answer: area for circle is  πr² so πr² =28.26 and we can sub 3.14 as pi

3.14*r²=28.26 we can divide by 3.14 to get r² on it's own

r²=28.26/3.14

then we root both sides to get r on it's own

28.26/3.14=9 √9=3

and the diameter is double the radius 3*2=6 so the diameter is 6

Step-by-step explanation:

The width of rectangle is [tex]2\frac{1}{4}[/tex] cm and length is [tex]5\frac{5}{12}[/tex] cm.

Step-by-step explanation:

Let,

Width of rectangle = w

Length of rectangle = [tex]w+3\frac{1}{6}=w+\frac{19}{6}[/tex]

Perimeter of rectangle = [tex]15\frac{1}{3}=\frac{46}{3}[/tex] cm

Perimeter = 2(Length + Width)

[tex]\frac{46}{3}=2(w+\frac{19}{6}+w)\\\\\frac{46}{3}=2(2w+\frac{19}{6})\\\\\frac{46}{3}=4w+\frac{19}{3}\\\\4w+\frac{19}{3}=\frac{46}{3}\\\\4w=\frac{46}{3}-\frac{19}{3}\\\\\ 4w=\frac{46-19}{3}\\\\4w=\frac{27}{3}\\\\4w=9[/tex]

Dividing both sides by 4

[tex]\frac{4w}{4}=\frac{9}{4}\\\\w=\frac{9}{4}[/tex]

Width of rectangle = [tex]\frac{9}{4}=2\frac{1}{4}\ cm[/tex]

[tex]Length = w+\frac{19}{6}=\frac{9}{4}+\frac{19}{6}\\\\Length = \frac{27+38}{12}=\frac{65}{12}\\\\Length=5\frac{5}{12}\ cm[/tex]

The width of rectangle is [tex]2\frac{1}{4}[/tex] cm and length is [tex]5\frac{5}{12}[/tex] cm.

Keywords: rectangle, perimeter

Learn more about perimeter at:

#LearnwithBrainly

Final answer:

The width of the rectangle is 9.92 cm (approx.) and the length is 13.09 cm, calculated using the given perimeter and the relationship between the width and length, both rounded to three significant figures.

Explanation:

The question asks to find the width and length of a rectangle given that the length is 3 1/6 cm longer than the width and the perimeter is 15 1/3 cm. To solve this, first express the perimeter as an equation involving width (w) and length (l):

Perimeter (P) = 2l + 2w

Since the length is 3 1/6 cm longer than the width, we can express the length as:

l = w + 3 1/6

Substitute the value of l in the perimeter equation:

15 1/3 = 2(w + 3 1/6) + 2w

Convert mixed numbers into improper fractions for easier computation:

46/3 = 2(w + 19/6) + 2w

Expand and solve for w:

46/3 = (4w + 19/3)

3(46) = 4w(3) + 19

138 = 12w + 19

119 = 12w

w = 119/12

w = 9.916666...

To match our significant figures requirement, we report the width of the rectangle as 9.92 cm to three significant figures. Now calculate the length:

l = w + 3 1/6

l = 9.92 + 3.1666...

l = 13.0866...

Again, matching our significant figures requirement, the length is reported as 13.09 cm to three significant figures.

Answer:

The range is [tex]\{-9,-8,-7,-6,-5\}[/tex]

The graph in the attached figure

Step-by-step explanation:

we have

[tex]y=x-7[/tex]

The domain is the interval [tex]\{-2,-1,0,1,2\}[/tex] ----> given problem

Remember that

The domain of a function is the set of all possible values of x

The range of a function is the complete set of all possible resulting values of y, after we have substituted the domain.

To find out the range of the function , find the value of y for each value of x

so

For x=-2 ----> y=-2-7=-9

For x=-1 ----> y=-1-7=-8

For x=0 ----> y=0-7=-7

For x=1 ----> y=1-7=-6

For x=2 ----> y=2-7=-5

therefore

The range is [tex]\{-9,-8,-7,-6,-5\}[/tex]

The graph in the attached figure

3(4x + 2) - 6x

12x + 6 - 6x

6x + 6

Hope this helps! ;)

Answer:

The correct answer is B. 6x + 6

Step-by-step explanation:

Let's simplify the expression, this way:

3(4x + 2) - 6x

12x + 6 - 6x

6x + 6

After solving the parenthesis, multiplying, adding and subtracting, the correct answer is B. 6x + 6

Answer:

Step-by-step explanation:

31) Y = -3x² + 18 x -25 = -3*x² + -3*-6x -25

  = -3(x² -6x) - 25

( (a-b)² =a² - 2ab + b²;   here a = x; 2ab = -6x = -2*x*3; and so b = 3)

  = -3(x² -6x + 9 - 9) - 25  

 { when we add and subtract 9, the equation will not change}

= -3[(x -3)² - 9] -25

= -3(x - 3)² - (-3)*9 - 25

= -3(x - 3)² + 27 -25

= -3(x - 3)² + 2

32) y= -3x² - 18x - 25

    = -3 (x² + 6x )-25

  = -3 (x² + 6x + 9 - 9) -25

= -3 [ (x+ 3)² - 9] -25

=-3 (x + 3)² - (-3)*9 - 25

= -3(x + 3)² + 27 - 25

= -3(x+3)² +2

Answer:

3.35

Step-by-step explanation:

Answer:

3.35

Step-by-step explanation:

[tex]\frac{x^2}{4}-\frac{10x}{2}+25[/tex]

Solution:

Given expression is [tex](\frac{1}{2}x-5)^2[/tex].

Simplify the expression using algebraic formula [tex](a-b)^2=a^2-2ab+b^2[/tex]

[tex](\frac{1}{2}x-5)^2=(\frac{x}{2}-5)^2[/tex]

               [tex]=(\frac{x}{2})^2-2(\frac{x}{2})5+5^2[/tex]

               [tex]=\frac{x^2}{4}-10(\frac{x}{2})+25[/tex]

               [tex]=\frac{x^2}{4}-\frac{10x}{2}+25[/tex]

[tex](\frac{1}{2}x-5)^2=\frac{x^2}{4}-\frac{10x}{2}+25[/tex].

Hence, the simplified form of  [tex](\frac{1}{2}x-5)^2[/tex] is [tex]\frac{x^2}{4}-\frac{10x}{2}+25[/tex].

5 jars of jam and 3 packages of bread mix are in gift basket

Solution:

Let "x" be the number of jars of jam

Let "y" the number of packages of bread mix

Cost of 1 jars of jam = $ 6

Cost of 1 package of bead mix = $ 5

There are 8 items in the basket

Therefore,

number of jars of jam + number of packages of bread mix = 8

x + y = 8 ---------- eqn 1

A gift basket that contains jars of jam and packages of bread mix costs $45

Therefore, we frame a equation as:

number of jars of jam x Cost of 1 jars of jam + number of packages of bread mix x Cost of 1 package of bead mix = 45

[tex]x \times 6 + y \times 5 = 45[/tex]

6x + 5y = 45 --------- eqn 2

Let us solve eqn 1 and eqn 2

From eqn 1,

x = 8 - y --------- eqn 3

Substitute eqn 3 in eqn 2

6(8 - y) + 5y = 45

48 - 6y + 5y = 45

y = 48 - 45

Substitute y = 3 in eqn 3

x = 8 - 3

Thus 5 jars of jam and 3 packages of bread mix are in gift basket

Answer: 40 small cups sold and 30 large cups sold.

Step-by-step explanation:

Let be "s" the number of small cups sold and "l" the number of large cups sold.

Based on the information given in the exercise, you can set up the following system of equations:

[tex]\left \{ {{s+l=70} \atop {10s+20l=1000 }} \right.[/tex]

You can use the Elimination Method to solve the system of equations:

1. Multiply the first equation by -10.

2. Add both equations.

3. Solve for "l".

Then, you get:

[tex]\left \{ {{-10s-10l=-700} \atop {10s+20l=1000 }} \right.\\.........................\\10l=300\\\\l=\frac{300}{10}\\\\l=30[/tex]

4. Finally, substitute the value of "l" into any original equation and solve for the variable "s" in order to find its value.

This is:

[tex]s+30=70\\\\s=70-30\\\\s=40[/tex]

Answer:

Part A:  For no solution ⇒ 3x + 9 + 4x + x = 8x + 0

Part B:  For one solution ⇒ 3x + 9 + 4x + x = 0 * x + 1

Part C:  For infinitely many solutions ⇒ 3x + 9 + 4x + x = 8x + 9

====================================

Step-by-step explanation:

Part A:

3x + 9 + 4x + x = 8x

8x + 9 = 8x ⇒ Subtract 6x from both sides,

9 = 0 which is absurd and hence the equation has no solution.

=====================================

Part B:

3x + 9 + 4x + x = 0 * x + 1

∴ 3x + 9 + 4x + x = 1

8x + 9 = 1 ⇒ Subtract 9 from both sides.

8x = 1 - 9 = -8 ⇒ Divide both sides by 8.

x = -1      ⇒ this is the only solution.

======================================

Part C:

3x + 9 + 4x + x = 8x + 9

8x + 9 = 8x + 9

Subtract 8x from both sides,

9 = 9, both sides are balanced which means, the equation has infinitely many solutions.

Answer:

See diagram below:

Step-by-step explanation:

Answer:

Jason has to ride 0.75 i.e. [tex]\frac{3}{4}[/tex]  miles to reach the end of the path.

Step-by-step explanation:

Jason begins at the start of a path and rides his bike [tex]11\frac{1}{2}[/tex] miles on the path . The path is [tex]12\frac{1}{4}[/tex] miles long.

Therefore, the path is 12.25 miles long and Jason rides the distance of 11.5 miles.

We are asked to determine the distance that Jason must ride to reach the end.

Hence, Jason has to ride (12.25 - 11.5) = 0.75 i.e. [tex]\frac{3}{4}[/tex]  miles to reach the end of the path. (Answer)

Answer:

Simplified: -21-98t

Factored: -7(14t+3)

Step-by-step explanation:

The given expresion is:

14-28t-5(7+10t)

We expand the parenthesis to get:

[tex]14 - 28t -35 - 70t[/tex]

We group like terms to get:

[tex]14 -35 - 28t- 70t[/tex]

We combine similar terms to get:

[tex] - 21- 98t[/tex]

We now factor to obtain:

[tex] - 21- 98t = - 7(14t + 3)[/tex]

speed of a boat when it goes downstream is 336/12 = 28 mi/h

speed of a boat when it goes upstream is 336/14 = 24 mi/h

Let v is speed of the boat in still water and x is speed of the current. Then,

v + x = 28

v - x = 24

Solve the system for v and x and get v = 26 mi/h, x = 2 mi/h

Answer:

1a + 6 or a + 6

Step-by-step explanation:

3a - 2a + 6

3a - 2a = 1a or a

1a + 6 or a + 6

plz mark brainliest i just need 3 more plz plz plz

Answer:

3a-2a+6= (3-2)×a + 6 = (1)×a + 6 = a + 6

Answer:

y=2.5x+3650

Step-by-step explanation:

since you don't know the amount of units sold you make that x

you do know that the company has to pay a set amount each month for utilities and salaries. 350+3300

put this together, and you get the equation:

y=2.5x+3650

y=total expenses

2.5= price per unit

x= total units sold

3650=amount payed each month for utilities, and salaries

The percent increase is 0.53%

The percentage increase in the number of Greywolf is 90% and this can be determined by using the unitary method.

Given :

The following steps can be used in order to determine the percentage increase in the number of Greywolf:

Step 1 - The unitary method can be used in order to determine the percentage increase in the number of Greywolf.

Step 2 - According to the given data, there are previously 20 Greywolf in a wildlife park which is 100%.

Step 3 - So, let the percentage of 38 Greywolf be 'x'. So, the value of 'x' can be calculated as:

[tex]x = \dfrac{38}{20}\times 100[/tex]

[tex]x = 190\%[/tex]

Step 4 - So, the percentage increase in the number of Greywolf is:

[tex]{\rm Percentage \; Increase} = 190-100[/tex]

[tex]{\rm Percentage \; Increase} = 90\%[/tex]

The percentage increase in the number of Greywolf is 90%.

For more information, refer to the link given below:

https://brainly.com/question/1202726

Answer:

X=9

Step-by-step explanation:

In the picture above.