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kramer
3 years ago
14

I need help on this question i will give points to whoever answer its​

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
6 0

Answer:

x=34

Step-by-step explanation:

2x =68

-----------             (68 divided by 2 is 34)

2        2

x=34

Bezzdna [24]3 years ago
5 0

Answer:

the answer would be A. x=34

Step-by-step explanation:

to solve for x in this equation, you need to get x all by itself to do this, you need to remember that what you do to one side of the equation, you must do to the other. so:

we start with 2x=68, and to get rid of the 2 in front of the x, divide each side by 2.

2x/2=68/2

so now x is alone:

x=68/2

and now divide 68 by 2, which is 34.

so, x=34

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How many solutions does this equation have? -2-5x= -(5x+2)
Leno4ka [110]

Answer:

Infinite solutions

Step-by-step explanation:

A linear equation is given to us and we need to tell the no. of solutions. The equation is ,

=> -2-5x = - ( 5x +2)

If we look at RHS , negative sign is present outside the brackets .On opening the brackets , we have ,

=> -(5x) -(+2)

=> -5x -2

=> -2 - 5x

This is similar to LHS and hence they will represent same line . Hence they will have infinitely many solutions .

<h3><u>They have infinitely many solutions .</u></h3>

8 0
3 years ago
A laboratory tested 85 chicken eggs and found that the mean amount of cholesterol was 190 milligrams. Assume that the sample sta
Serjik [45]

Answer:   (182.356,\ 197.644)

Step-by-step explanation:

Given : Significance level : \alpha:1-0.95=0.05

Sample size : n=85

Critical value : z_{\alpha/2}=1.96

Sample mean : \overline{x}=190

Standard deviation : \sigma=11.7

The confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=190\pm(1.96)\dfrac{11.7}{\sqrt{9}}\\\\=190\pm7.644\\\\=(190-7.644,\ 190+7.644)=(182.356,\ 197.644)

Thus, the 95% confidence interval for the true mean cholesterol content, μ, of all such eggs = (182.356,\ 197.644)

Hence, we conclude that the true population mean of amount of cholesterol lies between 182.356 and 197.644.

5 0
3 years ago
Solve by substitution
solong [7]
X= -7
Y= -3

Please mark me as brainliest if this helped.
7 0
3 years ago
Express the polar coordinates (-2, pi/2) as Cartesian coordinates.
marshall27 [118]

Answer:

(0, -3)

Step-by-step explanation:

Hope this helps, sorry I'm a little late

7 0
3 years ago
Someone pls help me I will make you Brainly
AURORKA [14]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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