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3 years ago

6

Can someone help me

1 answer:

oee [108]3 years ago

5 0

the answer is A, missing data

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How do you do a 3-step algebra equation?

Vlad1618 [11]

The goal of all algebra equations is to isolate the variable. In 3 step you should first make sure both variables are on the same side. To do that make sure you use the inverse.
For example:
6a + 9 = 3a + 15
because 3a is positive you're going to want to subtract it.
6a + 6 = 3a + 15
-3a -3a
_______________
3a + 6 = 15

Now it's a 2 step equation and you solve it on from there.

5 0

3 years ago

Determine f(9/2) for the function f(x)=3x-5

ANEK [815]

Answer:

f(9/2) = 17/2

Step-by-step explanation:

f(x) = 3x-5

let x=9/2

f(9/2) = 3*9/2 -5

f(9/2) = 27/2 - 5

get a common denominator

f(9/2) = 27/2 - 10/2

f(9/2) = 17/2

5 0

3 years ago

The area of a rectangle is 123 cm2. If the width is 3 cm, find the length. Let l represent the length of the rectangle.

BartSMP [9]

Answer:

41 cm

Step-by-step explanation:

123/3

8 0

3 years ago

What is the answer ????

zlopas [31]

I think its c hope this helps sorry if it dont

7 0

3 years ago

Solve in |R 2cos(2x) +√2 = 0

Alexxx [7]

It is given that:

$\begin{gathered} 2\cos 2x+\sqrt[]{2}=0 \\ 2\cos 2x=-\sqrt[]{2} \\ \cos 2x=-\frac{\sqrt[]{2}}{2} \end{gathered}$

cos2x is negative square root 2 divided by 2 in the second and third quadrants, so it follows:

$\begin{gathered} \cos 2x=\cos \theta \\ 2x=2n\pi\pm\theta \end{gathered}$

Here theta is given by:

$\theta=\pi-\frac{\pi}{4}=\frac{3\pi}{4},\theta=\pi+\frac{\pi}{4}=\frac{5\pi}{4}$

So the solution is given by:

$\begin{gathered} 2x=2n\pi\pm\frac{3\pi}{4};2x=2n\pi\pm\frac{5\pi}{4} \\ x=n\pi\pm\frac{3\pi}{8};x=n\pi\pm\frac{5\pi}{8} \end{gathered}$

4 0

1 year ago