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RUDIKE [14]
3 years ago
5

Sue solved an equation incorrectly, as shown below:

Mathematics
1 answer:
antoniya [11.8K]3 years ago
8 0
She did not divide 28 by7
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Anybody knows the answer?
vladimir1956 [14]

The top and bottom faces are 3 inches by 3 inches.

Area = 3 in. * 3 in. * 2 = 18 in.^2

The front, back, right, and left faces are 3 in. by 6 in.

Area = 3 in. * 6 in. * 4 = 72 in.^2

Total surface area = 18 in.^2 + 72 in.^2 = 90 in.^2

Answer: B. 90 square inches

3 0
3 years ago
Somebody help with both questions
Minchanka [31]
1. X=5
2. I think I’m not sure is - 5.04
8 0
3 years ago
The perimeter of a triangle is 28 feet. One side of the triangle is 5 feet longer than the second side. The third side is 8 feet
Hitman42 [59]

side one is 5 side two is 10 and the third side is 13. 28 is not divisible by three so if one side i 5 ft longer and another side is 8 ft longer then you add them 5+8=13 then subtract 13 from the perimeter 28-13=15 then divide 15 by 3 and get 5 5 5. add 5 (5+5) (5+8).

7 0
3 years ago
Solve y^2+7y+12=0 by completing the square.​
kkurt [141]

Answer:

y = -3, -4

Step-by-step explanation:

Formula is (b/2)^2

So...

(y+7/2)^2 - 1/4 = 0

Add 1/4 to each side

(y+7/2)^2 = 1/4

Square root...

y+7/2 = +-1/2

Add

y = -3, -4

8 0
3 years ago
How do you do the equation 2 to the second power over 2 to the 3rd power
padilas [110]

2 to the second power is 2 x 2 (4) , and 2 to the 3rd power is 2 x 2 x 2 (8)

3 0
3 years ago
Read 2 more answers
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