3 years ago

-1=z\3-7 what's the answer

Mathematics

2 answers:

baherus [9]3 years ago

7 0

Z=-4 ......................

valentina_108 [34]3 years ago

5 0

Z=-4 !~!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Can someone help me with geometry

Vinil7 [7]

whats the question then?

7 0

3 years ago

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Rewrite <br><img src="https://tex.z-dn.net/?f=%20%7Bcos%7D%5E%7B4%7D%20x" id="TexFormula1" title=" {cos}^{4} x" alt=" {cos}^{4}

erastovalidia [21]

All you need is the double angle identity:

$\cos^2x=\dfrac{1+\cos2x}2$

So we have

$\cos^4x=(\cos^2x)^2=\left(\dfrac{1+\cos2x}2\right)^2=\dfrac{1+2\cos2x+\cos^22x}4$

Apply the identity again to the squared term:

$\cos^4x=\dfrac{1+2\cos2x+\frac{1+\cos4x}2}4=\dfrac{3+4\cos2x+\cos4x}8$

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3 years ago

How is solving −5x = −6.5 different from solving − 1 5 x = −6.5? How are the solutions related? Complete the explanation.

Alexxandr [17]

Answer:

Step-by-step explanation:

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3 0

3 years ago

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Let f(x) = x^2+ 5x and g(x) = 5 - x. Find f(3) + g(3)

Alchen [17]

Answer:

Step-by-step explanation:

f(x)=x^2+5x g(x)=5‒x

f(3)=3^2+5(3) g(3)=5‒3

f(3)=9+15 g(3)=2

f(3)=24

f(3)+g(3)=24+2

=26

i think it is easy to understand &i hope it helps you

6 0

3 years ago

The interval (-1, 1) is best described as

Bad White [126]

Answer: There's an increasing interval between -1 and 1

While x goes from -1 to 1, the value of y increases (from -2 to 2).

7 0

2 years ago