1 year ago

Which expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign?

Mathematics

1 answer:

Lelechka [254]1 year ago

7 0

Answer:

A is the correct answer

Step-by-step explanation:

Area= (8x-2)^2=(8x)^2 -2(8x)(2) +(2)^2

=64x-32x+4

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3 years ago

In a bag of blue and yellow marbles, the ratio of blue marbles to yellow marbles is 3:5. if the bag contains 60 yellow marbles,

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3 years ago

Write a word problem that you can solve by multiplying a mixed number y a whole number.Include a solution

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3 years ago

Twelve less than a number is 50.

Katen [24]

Answer:

Step-by-step explanation:

another way to write this is

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7 0

2 years ago

I NEED HELP PLEASE, THANKS! :)

NISA [10]

Answer: $\bold{b)\quad \dfrac{2\pi}{3},\dfrac{4\pi}{3},0}$

<u>Step-by-step explanation:</u>

Note the following identities: tan² x = sec²x - 1

$\sec x=\dfrac{1}{\cos}$

tan² x + sec x = 1

(sec² x -1) + sec x = 1

sec² x + sec x - 2 = 0

(sec x + 2)(sec x - 1) = 0

sec x + 2 = 0 sec x - 1 = 0

sec x = -2 sec x = 1

$\dfrac{1}{\cos x}=-2\qquad \dfrac{1}{\cos x}=1\\\\\cos x=-\dfrac{1}{2}\qquad \cos x=1\\\\x=\dfrac{2\pi}{3}, \dfrac{4\pi}{3}\qquad x=0$

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2 years ago

Read 2 more answers