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2 years ago

5

Which statement is true about the equation (x – 4)(x + 2) = 16?

1 answer:

Digiron [165]2 years ago

8 0

Answer:

The Answer is C

Step-by-step explanation:

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Can someone explain Scientific Notations? I don't understand them...

wlad13 [49]

Answer:

Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form.The primary reason for converting numbers into scientific notation is to make calculations with unusually large or small numbers less cumbersome.

Step-by-step explanation:

7 0

2 years ago

G(x) =2x + 4; Find g(-3)

yuradex [85]

Answer:

$g(-3)=-2$

Step-by-step explanation:

<u>Substitute g(-3) into the function:</u>

$g(-3)=2(-3)+4$

<u>Multiply:</u>

<u /> $g(-3)=-6+4$

<u>Add:</u>

<u /> $g(-3)=-2$

7 0

2 years ago

Read 2 more answers

Help me plz!!!!!!!!!!!!!!!!

mixer [17]

Answer:

Graph A

Step-by-step explanation:

-y=-2-3x

y=3x+2

Slope:3

y-intercept:2

5 0

2 years ago

Please help me out :P

Veseljchak [2.6K]

cos θ = $\frac{-4\sqrt{65} }{65}$ , sin θ = $\frac{-7\sqrt{65} }{65}$ , cot θ = 4/7, sec θ = $\frac{-\sqrt{65} }{4}$ , cosec θ = $\frac{-\sqrt{65} }{7}$

<h3>What are trigonometric ratios?</h3>

Trigonometric Ratios are values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

Sin θ: Opposite Side to θ/Hypotenuse

Tan θ: Opposite Side/Adjacent Side & Sin θ/Cos

Cos θ: Adjacent Side to θ/Hypotenuse

Sec θ: Hypotenuse/Adjacent Side & 1/cos θ

Analysis:

tan θ = opposite/adjacent = 7/4

opposite = 7, adjacent = 4.

we now look for the hypotenuse of the right angled triangle

hypotenuse = $\sqrt{7^{2} + 4^{2} }$ = $\sqrt{49+16}$ = $\sqrt{65}$

sin θ = opposite/ hyp = $\frac{7}{\sqrt{65} }$

Rationalize, $\frac{7}{\sqrt{65} }$ x $\frac{\sqrt{65} }{\sqrt{65} }$ = $\frac{7\sqrt{65} }{65}$

But θ is in the third quadrant(180 - 270) and in the third quadrant only tan and cot are positive others are negative.

Therefore, sin θ = - $\frac{7\sqrt{65} }{65}$

cos θ = adj/hyp = $\frac{4}{\sqrt{65} }$

By rationalizing and knowing that cos θ is negative, cos θ = - $\frac{-4\sqrt{65} }{65}$

cot θ = 1/tan θ = 1/7/4 = 4/7

sec θ = 1/cos θ = 1/ $\frac{4}{\sqrt{65} }$ = - $\frac{-\sqrt{65} }{4}$

cosec θ = 1/sin θ = 1/ $\frac{\sqrt{65} }{7}$ = $\frac{-\sqrt{65} }{7}$

Learn more about trigonometric ratios: brainly.com/question/24349828

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5 0

1 year ago

The Temperature over a 4 day period in Pittsburgh were as follows -6, 10, 6?and -2. Find the mean

Pepsi [2]

Answer:

You add them, then subtract them by how many numbers there are :) So add them then subtract them by 4

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers