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labwork [276]
3 years ago
10

Someone please help me.

Mathematics
1 answer:
Alexandra [31]3 years ago
5 0

Answer:

y=mx +b  

slope intercept form...

B = y-intercept...

b=9/10

y-intercept = 9/10

Step-by-step explanation:

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Help angels this geometry is a pain in the 4$$
stich3 [128]

Answer:

1. 4.5

2. The scale factor is 3/4

Step-by-step explanation:

6 0
2 years ago
What is the product? –9x(5 – 2x) 18x2 – 45x –18x2 – 45x –18x – 45x 18x – 45x
ser-zykov [4K]
<span>–9x(5 – 2x) 
= -45x + 18x^2
= 18x^2 - 45x

answer
</span>18x^2 - 45x
7 0
3 years ago
Read 2 more answers
HELP ME PLEASE ILL GIVE BRAINLIEST
Alex73 [517]

Answer:

la respuesta correcta es la c

step explanation:

la respuesta correcta es la c

7 0
3 years ago
Rewrite with only sin x and cos x.
Annette [7]

Option A

\cos 3 x=\cos x-4 \cos x \sin ^{2} x

<em><u>Solution:</u></em>

Given that we have to rewrite with only sin x and cos x

Given is cos 3x

cos 3x = cos(x + 2x)

We know that,

\cos (a+b)=\cos a \cos b-\sin a \sin b

Therefore,

\cos (x+2 x)=\cos x \cos 2 x-\sin x \sin 2 x  ---- eqn 1

We know that,

\sin 2 x=2 \sin x \cos x

\cos 2 x=\cos ^{2} x-\sin ^{2} x

Substituting these values in eqn 1

\cos (x+2 x)=\cos x\left(\cos ^{2} x-\sin ^{2} x\right)-\sin x(2 \sin x \cos x)  -------- eqn 2

We know that,

\cos ^{2} x-\sin ^{2} x=1-2 \sin ^{2} x

Applying this in above eqn 2, we get

\cos (x+2 x)=\cos x\left(1-2 \sin ^{2} x\right)-\sin x(2 \sin x \cos x)

\begin{aligned}&\cos (x+2 x)=\cos x-2 \sin ^{2} x \cos x-2 \sin ^{2} x \cos x\\\\&\cos (x+2 x)=\cos x-4 \sin ^{2} x \cos x\end{aligned}

\cos (x+2 x)=\cos x-4 \cos x \sin ^{2} x

Therefore,

\cos 3 x=\cos x-4 \cos x \sin ^{2} x

Option A is correct

7 0
3 years ago
When x = -2 h (x) = |-2x-6|
stich3 [128]

Answer:

Step-by-step explanation:

A function is an equation that has only one answer for y for every x. A function assigns exactly one output to each input of a specified type. It is common to name a function either f(x) or g(x) instead of y. f(2) means that we should find the value of our function when x equals 2.

so you must first find what is the x and which one is the y in the function then you will find the answer when you solve the problem

4 0
3 years ago
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