3 years ago

Given f(x) = 5x + 1, find f(-3). I need help ASAP

Mathematics

1 answer:

kotegsom [21]3 years ago

8 0

Answer:

take a look ...........

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ABCD is a quadrilateral with A(8,3), B(6, 7), C(-1,5), D(-6, -1). Determine whether ABCD is a trapezoid. Justify

pashok25 [27]

Answer: ABCD is not a trapezoid.

Step-by-step explanation:

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3 years ago

How do I get this answer?

Keith_Richards [23]

Answer:

Step-by-step explanation:

Several trig identities are involved in the proof of this. This is the order in which they are used.

cos(2x) = cos²(x) -sin²(x)
cos²(x) +sin²(x) = 1
cos(x) = 1/sec(x)

<h3>Proof</h3>

Starting with the left side, we can transform it into the right side.

$2\cos(2x)=2(\cos^2(x)-\sin^2(x)) = 2(\cos^2(x)-(1-\cos^2(x)))\\\\=2(2\cos^2(x)-1)=2\left(\dfrac{2}{\sec^2(x)}-\dfrac{\sec^2(x)}{\sec^2(x)}\right)\\\\=\boxed{\dfrac{4-2\sec^2(x)}{\sec^2(x)}}$

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2 years ago

what is the perimeter, in centimeters, of a right triangle that has leg lengths of 8centimeters and 11 centimeters? round to the

soldi70 [24.7K]

Answer:

Step-by-step explanation:

8 x 11 = 88

So now you have to add 2 to get to the nearest 10. ;)

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3 years ago

What is the slope of the line?

kolbaska11 [484]

Answer:

im not very sure but i think its A or C

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3 years ago

Read 2 more answers

A vertical line has a(n) ________ slope. a. undefined b. negative c. zero d. positive

Olin [163]

C. Zero slope. If it's going straight up and down, there is no slope.

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3 years ago