3 years ago

Please help me hurry

Mathematics

1 answer:

Leni [432]3 years ago

7 0

i believe 2 is your correct answer'

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Vanyuwa [196]

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Since the 2 side lines are parallel,

$2x + 40 + 5x = 180 \\ 7x + 40 = 180$

(Note that you can further simplify the equation if you wish to, this is a general equation.)

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2 years ago

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3 years ago

How are Ratios,rates and unit rates used to solve problems?

insens350 [35]

Answer:

hope u understand

Step-by-step explanation:

Unit rates can conveniently be multiplied by any desired number in order to answer questions about differently scaled questions. E.g. If three marbles cost 30 cents, how much will eleven marbles cost?

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3 years ago

Read 2 more answers

Please Help? For the function f(x) = 2|x – 1|, what is the average rate of change over the interval –1 ≤ x ≤ 1?

lesya692 [45]

<h3>Answer: -2</h3>

========================================================

Explanation:

Plug in x = -1 to find that

f(x) = 2|x-1|

f(-1) = 2|-1-1|

f(-1) = 2|-2|

f(-1) = 2*(2)

f(-1) = 4

If you repeat for x = 1, you should find that f(1) = 0

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Now use the average rate of change formula below. Effectively, we're using the slope formula more or less.

$m = \frac{f(b)-f(a)}{b-a}\\\\m = \frac{f(1)-f(-1)}{1-(-1)}\\\\m = \frac{0-4}{1+1}\\\\m = \frac{-4}{2}\\\\m = -2\\\\$

The average rate of change on this interval is -2

This is the same as finding the slope through the points (-1, 4) and (1, 0).

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3 years ago