All categories

3 years ago

Find f(-3) if f(x) = x^2

Mathematics

1 answer:

I am Lyosha [343]3 years ago

4 0

This is easy all you have to do is plug in -3 into x^2

f(-3)=(-3)^2=(-3)(-3)=9

Answer: f(-3)=9 :)

You might be interested in

PLEASEE HELPP IM SO STUPID IDK HOW TO SOLVE THIS ILL GIVE U POINTD AND BRAINLIEST PLEASEEEEEE

scZoUnD [109]

Answer:

3 gallons I am in math club believe it or not

6 0

3 years ago

kirza4 [7]

Answer:

12+k/5

Quotient is a quantity produced by the division of two numbers.

8 0

3 years ago

50% of 42 students are girls. How many of the students are girl's

Anettt [7]

Answer:

21 girls.

Step-by-step explanation:

50% of 42 students are girls.

So 42/2 = 21.

Therefore 21 of the students are girls.

<em>Hope I helped</em>

3 0

1 year ago

Which of the following are identities? Check all that apply

Natasha2012 [34]

Answer:

A, C

Step-by-step explanation:

Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.

Examining

A) True

$\frac{1-tan^{2}x}{2tanx} =\frac{1}{tan2x} \\ \frac{1-tan^{2}x}{2tanx} =\frac{1}{\frac{2tanx}{1-tan^{2}x}}\\ tan2x=\frac{1-tan^{2}x}{2tanx}$

Double angle $tan2\alpha =\frac{1 -tan^{2}\alpha }{2tan\alpha}$

B) False,

No further development towards a Trig Identity

C) True

Double Angle Sine Formula $sin2\alpha =2sin\alpha *cos\alpha$

$sin(8x)=2sin(4x)cos(4x)\\2sin(4x)cos(4x)=2sin(4x)cos(4x)$

D) False No further development towards a Trig Identity

$[sin(x)-cos(x)]^{2} =1+sin(2x)\\ sin^{2} (x)-2sin(x)cos(x)+cos^{2}x=1+2sinxcosx\\ \\sin^{2} (x)+cos^{2}x=1+4sin(x)cos(x)$

7 0

3 years ago

Read 2 more answers

What is the slope-intercept equation of the line below?

marissa [1.9K]

The correct answer is B. y=-3x+4

3 0

3 years ago