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ziro4ka [17]
3 years ago
11

I need help with this one too

Mathematics
1 answer:
meriva3 years ago
3 0

Answer:

1/2+7= 7.5   3/4-1= -0.75

Step-by-step explanation: times the bottom numbers to get the fractions out of the way then solve for X on both equations then find the perimeter

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In a group 120 children there are teice as many boys as girls. How many girls are there?​
3241004551 [841]

Answer:

40 girls 80 boys

Step-by-step explanation:

80/2=40

40+80=120

6 0
2 years ago
Read 2 more answers
So the polynomial 24r squared represents the surface are of a cube a : determine the polynomial that represents the area of one
Naddika [18.5K]

Answer:

a. 4r² b. 2r c. 6 cm

Step-by-step explanation:

The surface area A of the cube is A = 24r². We know that the surface area, A of a cube also equals A = 6L² where L is the length of its side.

Now, equating both expressions, 6L² = 24r²

dividing both sides by 6, we have

6L²/6 = 24r²/6

L² = 4r². Since the area of one face is L², the polynomial that determines the area of one face is A' = 4r².

b.  Since L² = 4r² the rea of one face of the cube, taking square roots of both sides, we have

√L² = √4r²

L = 2r

So, the polynomial that represents the length of an edge of the cube is L = 2r

c. The length of an edge of the cube is L = 2r. When r = 3 cm.

L = 2r = 2 × 3 cm = 6 cm

So, the length of an edge of the cube is 6 cm.

5 0
2 years ago
Help with 8 9 and 10
Rainbow [258]
9. 2.86600....  that is all i know so far
6 0
3 years ago
Segment LM is the mid segment of Trapezoid ABCD.AB=×+8,LM=4×+3,andDC=215.what is the value of x
tatyana61 [14]

Answer:

3.46

Step-by-step explanation:

add

8 0
3 years ago
We want to place a bench measuring 7.05 feet in the center of a platform that is 40.75 feet long
AnnyKZ [126]
40.75 - 7.05= 33.7
33.7 / 2 = 16.85 
16.85 ft. should be on each side of the 7.05 ft. bench 
5 0
3 years ago
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