3 years ago

Find the surface area of this triangular prism.

Mathematics

1 answer:

Gennadij [26K]3 years ago

5 0

Answer:

Step-by-step explanation:

(6×2) + (2×10) + (8×2) + (1/2×6×8) × 2

=86

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In ΔDEF, the measure of ∠F=90°, DE = 70 feet, and EF = 57 feet. Find the measure of ∠D to the nearest tenth of a degree.

kondor19780726 [428]

Answer:

54.5°

Step-by-step explanation:

You know that in a right triangle, the sine of an angle is given by ...

Sin = Opposite/Hypotenuse

sin(D) = EF/ED = 57/70

The inverse sine function is used to find the angle:

∠D = arcsin(57/70)

∠D ≈ 54.5°

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3 years ago

Solve the equation -18=p/2?

sasho [114]

Answer:

p=-36

Step-by-step explanation:

-18=p/2

______________________

Multiply both sides by 2

-18(2)= p/2 (2)

______________________

-36 = p

switch the sides of the equation

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Step-by-step explanation:

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babymother [125]

$12-x=15 \\ \\ -x = 15 - 12 \\ \\ -x = 3 \\ \\ x = -3 \\ \\$

The final result is: x = -3.

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4 years ago

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Answer:

30 feets

Step-by-step explanation:

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