All categories

4 years ago

-16+2x= -64 what is the value of x

Mathematics

2 answers:

7nadin3 [17]4 years ago

7 0

Answer:

-16 + 2x = -64

+16 +16

2x = -48

-48÷2=-24

x = -24

navik [9.2K]4 years ago

3 0

Answer:

add 16 to both sides so it would 2x=-48 then you would divide 2 on both sides so it would be x=-24

Step-by-step explanation:

X=-24

You might be interested in

Write a two column proof.<br><br> Given: 4y = 2x - 10; y = 6<br><br> Prove: x = 17

Ivenika [448]

4y=2x-10

Plug in y

4(6)=2x-10

Simplify

24=2x-10

+10 to both sides

24+10=2x-10+10

Simplify

34=2x

÷2 both sides

17=x

x=17

5 0

3 years ago

A new computer can complete a complex biochemistry calculation in 7 hours less than an older-model computer. Working together, t

Alchen [17]

The rate a computer works is 1/time. Working together, you add the rates.
Let new computer be x, old computer be y.
x = y - 7

$\frac{1}{x} + \frac{1}{y} = \frac{1}{13} \\ \\ \frac{1}{y-7}+\frac{1}{y} = \frac{1}{13} \\ \\ \frac{2y-7}{y(y-7)} = \frac{1}{13} \\ \\ y(y-7) = 13(2y-7) \\ \\ y^2-33y+91 = 0 \\ \\ y = 29.96 \\ \\ x = y-7 = 29.96-7 = 22.96$
Rounded to nearest tenth gives:
x = 23 hours

6 0

3 years ago

Someone help its multiple choice im so confused

Viktor [21]

A, he had just eaten
B, he was shot in the back
E, the arrow went under his left armpit

This all is correct considering the paragraph i just read!

I wish you luck on the rest of your assessment!

mark this as brainliest if i helped at all!! :)

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B8%7D%20%20%5Ctimes%20%20%5Cfrac%7B2%7D%7B4%7D%20%20%3D%20" id="TexFormula1

disa [49]

Answer:

7/16

Step-by-step explanation:

$\dfrac78 \times \dfrac24=\dfrac{7 \times 2}{8 \times 4}=\dfrac{14}{32}=\dfrac{7}{16}$

4 0

3 years ago

Tan 0 = -2, 0

julsineya [31]

Answer:

Sin O = $\frac{2\sqrt{5} }{5}$

Cos O = $-\frac{\sqrt{5} }{5}$

Cot O = $-\frac{1}{2}$

Csc O = $\frac{\sqrt{5} }{2}$

Sec O = $-\sqrt{5}$

Step-by-step explanation:

Do you know the definitions of all the trig functions? If not, you need to memorize them. Also, you need to memorize which functions are positive in each quadrant. All functions are positive in quad I, sine and reciprocal are positive in quad II, tan and reciprocal are positive in quad III, and cos and reciprocal are positive in quad IV. OK?

Tan of an angle is opposite side/adjacent side of a right triangle

If the tan O = - 2. let the opp. side = 2 and adjacent side = 1. Then the hypotenuse = $\sqrt{2^{2} + 1^{2} } = \sqrt{4 + 1} = \sqrt{5}$

Sine is positve and equals opp/hyp = $\frac{2}{\sqrt{5} } = \frac{2\sqrt{5} }{5}$

Cos is negative and equals adj/hyp = $-\frac{1}{\sqrt{5} } = -\frac{\sqrt{5} }{5}$

Cot is negative and is the reciprocal of the tan or adj/opp = $\frac{-1}{2}$

Csc is positive and is the reciprocal of the sine or hyp/opp = $\frac{\sqrt{5} }{2}$

Sec is negative and is the reciprocal of the cos or hyp/adj = $-\sqrt{5}$

5 0

3 years ago