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3 years ago

If f(x) = 5x-2, what is (x)?

Mathematics

1 answer:

LiRa [457]3 years ago

4 0

Answer:

x= 0.4, or x = 2/5

Step-by-step explanation:

To find x you have to replace f(x) with 0 and solve for x

Hope this helps:)

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Reduce 18/32 to lowest terms

Karo-lina-s [1.5K]

18/32 to its lowest terms is 9/16

4 0

3 years ago

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(8 x 3) - ( 8 x 1) = x ( 3 - 1

garri49 [273]

Answer:

x=16

Step-by-step explanation:

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3 years ago

Lim x->pi/3 ((2cosx-1)/(tan^2x-3))

beks73 [17]

You can check that the limit comes in an undefined form:

$\displaystyle \lim_{x\to\frac{\pi}{3}} \frac{2\cos(x)-1}{\tan^2(x)-3}=\dfrac{0}{0}$

In these cases, we can use de l'Hospital rule, and evaluate the limit of the ratio of the derivatives. We have:

$\dfrac{\text{d}}{\text{d}x}2\cos(x)-1 = -2\sin(x)$

and

$\dfrac{\text{d}}{\text{d}x}\tan^2(x)-3 = 2\dfrac{\tan(x)}{\cos^2(x)}=\dfrac{2\sin(x)}{\cos^3(x)}$

So, we have

$\displaystyle \lim_{x\to\frac{\pi}{3}} \frac{2\cos(x)-1}{\tan^2(x)-3}=\lim_{x\to\frac{\pi}{3}} \dfrac{-2\sin(x)}{\frac{2\sin(x)}{\cos^3(x)}}=\lim_{x\to\frac{\pi}{3}}-\cos^3(x)=-\cos^3\left(\dfrac{\pi}{3}\right)$

6 0

3 years ago

Combine like terms to simplify the following expressions <br><br> -5a - 4a + b

Sauron [17]

Answer:

-9a + b

Step-by-step explanation:

For this problem, let us factor out the variable a from the terms containing the variable, and apply addition and the distributive property to simplify the terms.

-5a - 4a + b

= a ( -5 + -4 ) + b

= a ( -9 ) + b

= -9a + b

Hence, the simplified expression for -5a - 4a + b is -9a + b.

Cheers.

7 0

4 years ago

Read 2 more answers

2 Points

brilliants [131]

Answer: A

Step-by-step explanation:

(f+g)(x) means f(x)+g(x). Since we are given f(x) and g(x), we cna add them together.

x+8+(-4x-3)

x+8-4x-3

-3x+5

4 0

3 years ago