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3 years ago

Use the distributive property to write the following expression without parentheses. Then, simplify the result. -3(7x+3)+5=

Mathematics

1 answer:

Akimi4 [234]3 years ago

6 0

-3(7x+3)+5
=-21x-9+5
=-21x-4

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255 minutes

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2 years ago

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3 years ago

In ∆MNP, m∠N = 90º, NH – altitude, m∠P = 21º, PM = 4 cm. Find MH.

Sveta_85 [38]

Answer:

0.51 cm

Step-by-step explanation:

In right triangle MNP, MP = 4 cm, m∠N = 90°, m∠P = 21°

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$\cos \angle M=\dfrac{\text{Adjacent leg}}{\text{Hypotenuse}}=\dfrac{MH}{MN}\\ \\MH=MN\cos \angle M$

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3 years ago