Joann decides to paint one wall in her room with blackboard paint. The wall has the dimensions shown. A can of paint covers 25 square feet. How many cans of blackboard paint does Joann need for the wall.

Answer:

ratio of boys to girl=5:3

let boys be 5x and girls be 3x

5x=3x+24

2x=24

x=12

no. of girls=3×12

=36

Given:

Perimeter of a regular pentagon = 10 cm

The pentagon is dilated by a scale factor = [tex]\dfrac{3}{2}[/tex].

To find:

The perimeter of the new pentagon.

Solution:

If a figure is dilated by a scale factor k, then

Perimeter of new figure = k × perimeter of original figure

The scale factor is [tex]\dfrac{3}{2}[/tex] and the perimeter of a regular pentagon is 10 cm. So, the perimeter of a new pentagon is:

[tex]\text{Perimeter of new pentagon}=\dfrac{3}{2}\times 10[/tex]

[tex]\text{Perimeter of new pentagon}=3\times 5[/tex]

[tex]\text{Perimeter of new pentagon}=15[/tex]

Therefore, the perimeter of the new pentagon is 15 cm.

Answer: x=[3-n(5)^2]

Step-by-step explanation:

I took the test

Answer:

81 hours

Step-by-step explanation:

Let x be the time are needed

45：5 = x：9

5x = 45×9

5x = 405

x = 81

The time it takes 9 men working at the same pace to build this wall​ is 81 hours

Let x be the time are needed for 9men

If it takes five-man take 45 hours to build a wall then, we can have the ratio

45：5 = x：9

5x = 45×9

5x = 405

x = 81

Hence the time it takes 9 men working at the same pace to build this wall​ is 81 hours

Learn more on ratios here; https://brainly.com/question/2328454

Answer:

x = [tex]\frac{C-By}{A}[/tex]

Step-by-step explanation:

Given

Ax + By = C ( subtract By from both sides )

Ax = C - By ( divide both sides by A )

x = [tex]\frac{C-By}{A}[/tex]

Answer:

B) 45

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

45 + 90 = 135

180 - 135 =

45

Step-by-step explanation:

option number of b is write

Answer:

I've never attempted probability before but here goes:

1) 27 out of 50 draws

2) 10 out of 50 draws

3) 13 out of 50 draws

4) 40 out of 50 draws

Step-by-step explanation:

50 draws so:

red 12:50

blue 10:50

green 15:50

yellow 13:50

Answer:

Below

Step-by-step explanation:

Here:

Answer:

80°

Step-by-step explanation:

in my opinion X= 80 digress

Answer:

7.95km

Step-by-step explanation:

Answer:

If its a passing grade then no its not. :D

Step-by-step explanation:

Depends on what your parents say.

Answer:

44

Step-by-step explanation:

6x +22 + 7x + 16 = 90

13x +38 =90

13x = 52

x = 4

7 x 4 +16 = 44

Answer:

1.6 x 10^4

Step-by-step explanation:

(8/5) x 10^9-5

1.6 x 10^4

Answer:

129.996 cubic feet

Step-by-step explanation:

Assuming that the barrel is a perfect cylinder, we can use the formula to find the volume:

[tex]\pi(r)^2(h)[/tex]

First, we have to find the radius, which is:

D = 2r

So the radius is 3 feet, since it is half of the diameter. Then, we plug in the values.

[tex]3.14(3)^2(4.6)[/tex]

Now, we solve. Exponents are first...

3.14(9)(4.6)

Now multiply left to right.

28.26(4.6)

129.996 cubic feet

Therefore, the barrel can hold 129.996 cubic feet of oil. Hope this helps you!

Answer:

1. 15-5x 2. 54+18x 3. 3x+15 4. 28x+56

Step-by-step explanation:

I dont get  if you need this or the real answer if you need the real answer let me know and I will give you the real answer. :) Have a good day!

Answer:

yes

The equation is correct :)

Step-by-step explanation:

Answer:

y = 4/3x + 6

Step-by-step explanation:

y = 4/3x + b

2 = 4/3(-3) + b

2 = -4 + b

6 = b

y = 4/3x + 6

Answer:

A

Step-by-step explanation:

Answer:

800

Step-by-step explanation:

700________________750___________771________800

771 is over 750 so it would be rounded to 800

Answer: 800

Step-by-step explanation:

771 is 50+ thus it round over to 800.

Answer:

94rj034ni[fgnrwiogf3022390rujff;/.;

';.'

Answer:

AAAAAAAAAAAAAAAAA RRRRRRRRRRRRRR EEEEEEEEEEEEEE UUUUUUUUUUUU OOOOOOOOOOOKKKKKKKKAAAAAAAAAYYYYYYY?????????

Step-by-step explanation:

BTW I feel you

Answer:

1- all three heads

2- 2 heads 1 tails

3- at least one head

Step-by-step explanation:

Answer:

The answer is 8.513

Step-by-step explanation:

You got to the fourth number after the decimal if it's below five the previous number stays the name is five or above it would've been 8.514.

Answer:

W = 87 degrees

Step-by-step explanation:

First we can rearrange the question so that W is isolated on the left side, which we do by dividing both sides by tan:

tanW/tan = 19.0811/tan

W = 19.0811/tan

Now we can use the inverse tan function on the calculator ([tex]tan^{-1}[/tex]) to calculate it:

W = 19.0811 x [tex]tan^{-1}[/tex]

W = 87 degrees

Hope this helped!

I

THINK THAT THE

Answer:

IS

R MEANS RADIUS......π=22/7

πR+2R=19.02

R(π+2)=19.02

R(22+14/7)=19.02

R36/7=19.02

R=19.02 divided by 36/7

R=3.69

Answer:

108 associative

Step-by-step explanation:

Answer:

12 gallons

Step-by-step explanation:

If it takes 20 h for 5 gallons to be filled, it takes 4 h for 1 gallon to be filled. This is the ratio. You multiply 4 h by 12 to get 48 h, so you multiply 1 gallon by 12 as well. This is 12 gallons.

Answer:

18in^3

Step-by-step explanation:

v=πr^2h

3

where π =3

diameter=3

,r=3

2

=1.5

h=8

v= 3×1.5×1.5×8

3

v= 18

Answer:

log 2 8 is 3.

Step-by-step explanation:

Log2 8=Log(8) ÷ Log(2)

Log(8)= 0.903089986992

Log(2)=0.301029995664

Log2 8=0.903089986992 ÷ 0.301029995664

Ans =3

hope it helps :)

Answer

3

https://www.omnicalculator.com/math/log

this website is about math you can see it :)

I hope you happy