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netineya [11]
3 years ago
6

Solve for the surface area.

Mathematics
2 answers:
Sergio039 [100]3 years ago
6 0

There are two triangles.

Area of a triangle = 1/2 x 10 x 9 = 45 square in.

45 x 2 = 90 square inches

One side is 9 x 9 = 81 square inches.

One side ix 10 x 9  = 90 square inches.

One side = 9 x 13.5 = 121.5 square inches.

Total surface area = 90 + 81 + 90 + 121.5 = 382.5 square inches.

Feliz [49]3 years ago
3 0

Answer:

382.5

Step-by-step explanation:

9x10=90

9x9=81

13.5x9=121.5

9x10=90

180+81+121.5= 382.5

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<h2>-33x - 82</h2>

Step-by-step explanation:

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Seven less than the product of a number and 10 is 50
Veseljchak [2.6K]
<span>product of a number and 10: 10n
</span><span>Seven less than the product of a number and 10: 10n - 7
so
</span><span>Seven less than the product of a number and 10 is 50:</span>
10n - 7 = 50
----------------------------
if you need to find the number n then
10n - 7 = 50
10n = 57
    n = 57/10
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