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3 years ago

28x-4 what is it factored

2 answers:

5 0

To factor 28x-4, find the LCD
(find the number that can equal to both 28 and -4)

In this case, it would be 4. So, you factor out 4 from the equation

and it would look like 4* (7x-1)

You can not simplify it any more so the answer would be 4(7x-1)

igor_vitrenko [27]3 years ago

3 0

4(7x-1) this is how its factored :)

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Prove the identity with steps.

Sav [38]

Remember that a double angle formula for cosine is
$\cos(2x)=\cos^{2}x-\sin^{2}x$

So
$\cos^{2}(2x)-\sin^{2}(2x)=\cos(4x)$
$\rightarrow \cos^{2}(2x)-\sin^{2}(2x)=\cos(2*2x)$
$\rightarrow \cos^{2}(2x)-\sin^{2}(2x)=\cos^{2}(2x)-\sin^{2}(2x)$

4 0

3 years ago

Given f(x) = 5x-5 find f(-2)

lys-0071 [83]

Answer:

f(-2) = -15

Step-by-step explanation:

f(x) = 5x-5

Let x = -2

f(-2) = 5(-2) -5

= -10 -5

=-15

5 0

4 years ago

Solve the following system of inequalities graphically on the set of axes below. State

tankabanditka [31]

Answer:

The answer is definitely C

Step-by-step explanation:

Following the system of inequalities will graph this solution best on the graph, it is the inequality represented in the graph.

ur wlcm :)

correct me if im wrong

brainliest please?

6 0

2 years ago

If f(x) = -2x - 3, find f(0) - 7. <br><br><br>help please!! I will give brainliest!!!!

VikaD [51]

Hi there!

$\huge\boxed{-10}$

f(x) = -2x - 3

Plug in 0 for "x" to solve for f(0):

f(0) = -2(0) - 3

f(0) = -3

Since the question is asking you to evaluate f(0) - 7, simply subtract:

-3 - 7 = -10.

7 0

3 years ago

Complete 55%

MrMuchimi

Uh what??????? ......

8 0

3 years ago