Find the value of x (show work)

Answer:

Jim + June + Alex = 82 (x+9) x + (x-8) = 82 3x +1 = 82 3x = 82 - 1 = 81 x = 81/3 = 27. ANSWER. June is 27 years old; Jim is 27+9 = 36 years old; Alex is 27-8 = 19 years old.

Answer:

110.25

Step-by-step explanation:

Cost of 1 pen = 15.75

Cost of 7 pens = 15.75 × 7 = 110.25

Answer:

$110.25

Step-by-step explanation:

1 pen = $15.75

7 pens x $15.75 = $110.25

(this pen is expensive t.f)

Answer:

15x² - 3x - 7

Step-by-step explanation:

(12x² + 2x) - (-3x²+ 5x + 7)

First open the parentheses by applying the distributive property.

To do this, multiply each term you have inside (-3x⅔ + 5x + 7) by -1.

Thus, you would have the following:

12x² + 2x + 3x² - 5x - 7

Add like terms

12x² + 3x² + 2x - 5x - 7

15x² - 3x - 7

Answer:

-1/2

Step-by-step explanation:

Answer:

[tex]E(x) = 99[/tex]

Step-by-step explanation:

Given

The attached table

Required

Number of times 3 or 4 will occur

First, we complete the table as follows:

[tex]P(1) + P(2) +......+P(6) =1[/tex]

[tex]0.13 + 0.05 + P(3) + 0.21 + 0.19 + 0.3 = 1[/tex]

Collect Like Terms

[tex]P(3)= 1 -(0.13 + 0.05 + 0.21 + 0.19 + 0.3 )[/tex]

[tex]P(3)= 0.12[/tex]

The expected number of times is:

[tex]E(x)= n * P(x)[/tex]

So, we have:

[tex]E(x) = 300 * (0.12 + 0.21)[/tex]

[tex]E(x) = 300 * (0.33)[/tex]

[tex]E(x) = 99[/tex]

Answer:

the first one  or the last one

Step-by-step explanation:

5x+5y = 10 and 2x+2y=4

0 = 0

3x-6y = 4 and - 4x+8y=7

0 = 37 / 3

6x+2y = 6 and 7x+3y=9

0 = 3

3x-4y = 16 and 2x+3y = 5

x=4 and y=−1

Answer: v=210

Step-by-step explanation:

Answer:

44

Step-by-step explanation:

[tex]BC^{2} = (15-12)^{2} + (8-4)^{2}\\BC^{2} =9 + 16\\BC = \sqrt{9+16} \\BC = \sqrt{25} \\BC = 5[/tex]

P  = 12 + 15 + 8 + 4 + 5 = 44

Answer:

the length is 10

the width is 5

Step-by-step explanation:

Hey there!

To solve this equation we use the formula

50=5/x

step 1 divide each side by 5

50/5=10

so we can conclude that x (or the width) = 5

then we add 5 (because the length is 5 more then the width)

5+5=10

so length =10 and width = 5

Answer:

yes

Step-by-step explanation:

Answer:

31.5

Step-by-step explanation:

First we want to find what side NP is equal to. To do that we divide 4 by 12

12/4=3 so side mp=3

next we want to find the scale factor of the rectangles. to do that we divide 4 from 9

9/4=2.25

next we want to find what side st is equal too

to do that we multiply 3 by 2.25

3x2.25=6.75

finally we want to find the perimeter and to do that we do 2(6.75)+2(9)

2(6.75)+2(9)=31.5 so the perimeter of rectangle RSTU is 31.5

hope this helps :)

Answer:

a)  n  ≥ -2

b)  v > -6

Step-by-step explanation:

You did not state what you would like us to do with these. I will assume simplify.

a)

− 5 ( 6 n + 6 ) ≤ 30 first, distribute -5

-30 n + -30  ≤ 30 now, add 30 to both sides so we may isolate n our variable

-30 n  ≤ 60 now, divide -30 on both sides so we may isolate n completely. When we do this, the sign changes direction

n  ≥ -2

b)

8 v − 4 ( v − 8 ) > 8 first, distribute -4 (note: two negatives equal a positive)

8 v - 4v + 32  > 8 now, simplify

4v + 32  > 8 now, subtract 32 from both sides

4v > -24 now, divide both sides by 4 to isolate v

4v > -24

v > -6

Hope this helps! Please make brainliest <3

Answer:

width = 126 ft

Step-by-step explanation:

I'm going to assume that I am solving for width.

Area = width x length

84 = 2/3 x width

Now divide 84 by 2/3 to get the width (when you divide by a fraction, you actually multiply by its reciprocal, so it is 84 times 3/2)

84 x 3/2 = width

width = 126 feet

Answer:

744.5625

Step-by-step explanation: First divide 1 by 8 getting 0.125 then add it by 4 then multiplying 180.5

Answer:

the answer is 3n+7 please do you get it

Answer:

1. x = 2

2. couldn't figure out. sorry

Step-by-step explanation:

Answer:

Stage crewmember's calculation is incorrect

Correct = 1/16x 1/16y

Step-by-step explanation:

Given that:

Dimension of backdrop : 20 feets long ; 16 feets high

Actual dimension of building : 320 feets long ; 256 feets high

The correct scale factor can be obtained thus :

Ratio of backdrop dimension to the actual dimension of building

Length : 20 / 320 = 1 /16

Height : 16 / 256 = 1/16

Hence, stage crewmember's calculation of (1/20x ; 1/20y) is incorrect.

Answer:

for the first one it's going to be -30 and the second one is 10

Answer:

Step-by-step explanation:

The total number of triangles is 5

The total number of all shapes is 13

The ratio is triangles to total

The ratio is 5 to 13

Note

This problem is not very well defined. Notice the circle at the bottom left. It's less than 1/2 a circle. Question: do you count it or don't you. The answer to that question will influence other partial figures.

All you do is count the total number of figures and the number of triangles. I did count the part circle on the lower left as with the triangles that are missing their tops.

Answer:  8

Step-by-step explanation:

take 72 inches and divide it by 9 inches and you will have the answer

Answer:  1.95

Step-by-step explanation:

Luis is Harry's height minus 0.25m, which means Harry is Luis' height plus 0.25m.

Luis + 0.25 = Harry

1.7 + 0.25 = 1.95 m

Answer:

Step-by-step explanation:

9009g = 9kg 9g

Answer:

76.5

Step-by-step explanation:

Answer:

42

Step-by-step explanation:

You can use proportions to solve this problem.

[tex]\frac{5cm}{30km}[/tex]=[tex]\frac{7cm}{xkm}[/tex]

Now just cross multiply.

5cm*Xkm=7cm*30km

you can simplify the cm and km since its multipying.

5x=210

x=42

tesfa = x

dad = 4x

mom= 4x-1

x+4x+4x-1=101

9x+1=101

9x=100

100/9= 11.1

Answer:

What are we trying to find?

Step-by-step explanation:

Answer:

=5y+24

Step-by-step explanation:

Distribute:

=(8)(y)+(8)(3)+−3y

=8y+24+−3y

Combine Like Terms:

=8y+24+−3y

=(8y+−3y)+(24)

=5y+24