I will give you brainlist if you answer this correctly

Answer:n=2.3.5(n-2)+9=n=44.6

x=5th test score

(88+85+100+86+x)/5=90

(359+x)/5=90

71.8+x/5=90

-71.8              -71.8

x/5=18.2

*5       *5

x=91

the fith test score has to be 91 in order for the average to be 90

Answer:

x = 4 and y = 10

Step-by-step explanation:

-5y + 8x = -18

5y + 2x = 58

First you will want to get rid of y from both equations, so you add both equations together.

You will get 10x = 40, then subtract 10 from both sides and you get x = 4.

Now substitute x as 4 in any of the equations to get y.

-5y + 32 = -18

-5y = -50

y= 10

Answer:

x = 4

y = 10

Answer:

0.39%

hope this helps

Answer:

x = -31

Step-by-step explanation:

2(x-5) = 3(x+7)       1. Use distributive property

2x - 10 = 3x + 21     2.  Add 10 on both sides

2x = 3x + 31            3. Subtract 3x on both sides

-x = 31                       4. Divide by -1

x = -31

Answer:

D

Step-by-step explanation:

Answer:

X can be anything.

Step-by-step explanation:

Because both sides of the equation are the same term the solution for

x is the set of of numbers.

Answer:

d = 2

Step-by-step explanation:

14d - 22 +5d = 12d - 8

19d -22 = 12d - 8

      +22         +22

    19d = 12d + 14

  -12d   -12d

     7d = 14

    /7       /7

      d = 2

Answer:

d = 2

Step-by-step explanation:

Simplifying

14d + -22 + 5d = 12d + -8

Reorder the terms:

-22 + 14d + 5d = 12d + -8

Combine like terms: 14d + 5d = 19d

-22 + 19d = 12d + -8

Reorder the terms:

-22 + 19d = -8 + 12d

Solving

-22 + 19d = -8 + 12d

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '-12d' to each side of the equation.

-22 + 19d + -12d = -8 + 12d + -12d

Combine like terms: 19d + -12d = 7d

-22 + 7d = -8 + 12d + -12d

Combine like terms: 12d + -12d = 0

-22 + 7d = -8 + 0

-22 + 7d = -8

Add '22' to each side of the equation.

-22 + 22 + 7d = -8 + 22

Combine like terms: -22 + 22 = 0

0 + 7d = -8 + 22

7d = -8 + 22

Combine like terms: -8 + 22 = 14

7d = 14

Divide each side by '7'.

d = 2

Simplifying

d = 2

Answer:

[tex]\displaystyle (\frac{11}{2},5)[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

Point A(8, 2) → x₁ = 8, y₁ = 2

Point B(3, 8) → x₂ = 3, y₂ = 8

Step 2: Find Midpoint

Simply plug in your coordinates into the midpoint formula to find midpoint

Answer:

4 children per counselor

Step-by-step explanation:

Since the question is asking children per counselor, divide the children/counselor. Check all of the rows by dividing the children by counselor to make sure the constant of proportionality is correct. If you divide correctly, the constant of proportionality you get is 4.

Hope it helps!

Answer:

there is 4 students per conceler.

Step-by-step explanation:

please mark as brainllist.

Answer:

16%

Step-by-step explanation:

Hope this helps :D

Answer:

Percent increase

1. [tex]60[/tex] %

2. [tex]50[/tex] %

3. [tex]74.42[/tex] %

4. [tex]11.46[/tex] %

5. [tex]220[/tex] %

Step-by-step explanation:

1. $5 to $8

[tex]\frac{8-5}{5} * 100 = 60[/tex] %

2. From 20 students to 30 students

[tex]\frac{30-20}{20} * 100 = 50[/tex] %

3. From 86 books to 150 books

[tex]\frac{150-86}{86} * 100 = 74.42[/tex] %

4. From $3.49 to $ 3.89

[tex]\frac{3.89-3.49}{3.49} * 100 = 11.46[/tex] %

5. From 5 mile to 16 mile

[tex]\frac{16-5}{5} * 100 = 220[/tex] %

Answer:

55x + 148/24

Explanation:

Answer:

C.  - ([tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex])

Step-by-step explanation:

-3 ^-4 = -1/3 ^4

This equal - ([tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex] · [tex]\frac{1}{3}[/tex])

Answer:

3

Step-by-step explanation:

Answer:

Step-by-step explanation:

3

Answer:

x = 10

Step-by-step explanation:

Given

- (x - 3) = - 7 ( divide both sides by - 1 )

x - 3 = 7 ( add 3 to both sides )

x = 10

Answer:

c

a

Step-by-step explanation:

Answer:6) A:10    7) B:4

Step-by-step explanation:

m=input value, correct? So,

4 is NOT greater than 4, so the answer must be 10

3(4) is NOT greater than 12

Answer:

46.75

Step-by-step explanation:

55% × 85 = 46.75

If you don't know what 55% is in decimal then it is 0.55. You also do this way and will give you the same answer.

0.55 × 85 = 46.75

Hope this helps, thank you !!

Answer:

46.75.

Hope this helps! :)

Answer:

The diameter is any straight line that passes through the center of the circle, which endpoints can lie on. The radius is half the diameter. They help us find the circumference of a circle

Answer:

The diameter is the length of the line through the center that touches two points on the edge of the circle. It is related to the radius because whatever the diameter is is double what the radius is.  In differential geometry, the diameter is an important global Riemannian invariant.

Step-by-step explanation:

Answer:

No, they don't.

Step-by-step explanation:

I'm going to divide 18 by 9 and 30 by 20. If the quotients are the same, then we do have a proportion.

18 ÷ 9 = 2

30 ÷ 20 = 1.5

The quotients aren't the same. Same thing if you convert the fractions to decimals:

9 ÷ 20 = 0.45

18 ÷ 30 = 0.6

This means the two values do NOT form a proportion.

Hope this helps! Have a great day!

Answer:

No.

Step-by-step explanation:

9/20=18/30

9*30=20*18

120=360

If you would like to know how this works please do not hesitate to ask.

Answer:

-2

Explanation:

-6 x -2 = 12

12 - 3 = 9

Answer:

p=-2

Step-by-step explanation:

Move the -3 to the other side by adding 3 on both sides:

-6p-3+3=9+3

The equation now looks like this:

-6p=12

Divide -6 on both sides:

-6p/-6=12/-6

The equation now looks like this:

p=-2 which is the answer

Hope this helps!

Answer:

x^2-3x+4

Step-by-step explanation:

Answer:

i dont see a number line, attach a pic pls

Step-by-step explanation:

Answer:

The answer is 22%.

Step-by-step explanation:

All you need to do to figure this out is to divide 36 by 8.

8/36=.222222

Hope this helps!

Answer:

236

Step-by-step explanation:

100+100+36=236

Answer:

C. 180

Step-by-step explanation:

Very easy!! (i think-_-) A≈28.27 ft2 :))

Answer:

[tex]y = \frac{11}{3}x + -\frac{4}{3}[/tex]

Step-by-step explanation:

[tex]y = mx + b\\m = \frac{-5 - 6}{-1 - 2} = \frac{-11}{-3} = \frac{11}{3} \\\\y = \frac{11}{3}x + b\\6 = \frac{11}{3}(2) + b\\6 = \frac{22}{3} + b \\6 - \frac{22}{3} = b \\b = -\frac{4}{3}\\\\y = \frac{11}{3}x + -\frac{4}{3}[/tex]

Answer:

yes, no, no, yes

Step-by-step explanation:

Plug in each point into both equations to see which ones fit.

For the first point, (4,1) it works for both equations.

1=-2( 4 ) + 9, 1= -8 + 9, 1=1

4( 4 )+2( 1 )=18, 16 + 2 = 18, 18 = 18

Do it for the rest of the points and plug them in and you get,

no for (5,-3) because -1 does not equal to -3

no for (6,0) because -3 does not equal to 0

(-5,19) is yes because 19=19 and 18=18

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