3 years ago

HELP ME!!!!!! GEOMETRY!!!!!!

2 answers:

8 0

I think you would need it to be tangent of 71 is equal to x/10. You would need to cross multiply and solve for x. But in case you're feeling lazy, it's 29.04 feet which rounded to the tenths place is 29 feet.

Masja [62]3 years ago

4 0

You need to divide 71 / 10.

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creativ13 [48]

Answer:

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2x+5x^2-3x-7x^2

= -2x^2-1

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3 years ago

Write a polynomial equation with roots 5 and -9i. X^3-?x^2+?X-?=0

jek_recluse [69]

Answer:

x³ - 5x² + 81x - 405 = 0

Step-by-step explanation:

Complex roots occur in conjugate pairs.

Thus given x = - 9i is a root then x = 9i is also a root

The factors are then (x - 5), (x - 9i) and (x + 9i)

The polynomial is the the product of the roots, that is

f(x) = (x - 5)(x - 9i)(x + 9i) ← expand the complex factors

= (x - 5)(x² - 81i²) → note i² = - 1

= (x - 5)(x² + 81) ← distribute

= x³ + 81x - 5x² - 405, thus

x³ - 5x² + 81x - 405 = 0 ← is the polynomial equation

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3 years ago

Rewrite the expression without using grouping symbols.

labwork [276]

C because U subtract

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3 years ago

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