3 years ago

What is 5(2x+8)-5x=5(5x+6?

Mathematics

1 answer:

yanalaym [24]3 years ago

4 0

5(2x+8)-5x=5(5x+6)

Distribute

10x+40-5x=25x+30

combine like terms

5x+40=25x+30

-5x -5x

subtract 5x from both sides

40=20x+30

-30 -30

subtract 30 from both sides

10=20x

÷20 ÷20

divide both sides by 20

1/2=x is your final answer

You might be interested in

Kevin is trying to find a white sock in his drawer. He has 16 white socks, 4 brown socks, and 6 black socks. What is the probabi

dolphi86 [110]

The probability of the black sock is 6/26 for the white is 16/26 and for the brown is 4/26

5 0

3 years ago

A real-estate company appraised the market value of 36 homes in Lyttelton and found that the sample mean and standard deviation

pantera1 [17]

Solution :

Sample size Sample mean Sample S.D.

Sample 1 $n_1=36$ $\bar{x}_1=150,000$ $s_1=17,000$

Sample 2 $n_2=45$ $\bar{x}_2=100,000$ $s_2=12,000$

$df = \frac{\left(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}\right)^2}{\frac{1}{n_1-1}\left(\frac{s_1^2}{n_1}\right)^2+\frac{1}{n_2-1}\left(\frac{s_2^2}{n_2}\right)^2}$

= 60

Therefore, significance level, α = 0.1

Critical value, t* = 1.6706

So, the margin of error, $t^*=\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}$

= 559.9896

Lower limit, $(\bar x_1-\bar x_2)-\text{(margin of error)}=44402.0104$

Upper limit, $(\bar x_1-\bar x_2)+\text{(margin of error)}=55597.9896$

Therefore 90% C.I. is (44402.0104, 55597.9896) or $44402.0104 < \mu_1 - \mu_2 < 55597.9896$

5 0

3 years ago

Solve the following 2(X+3)=X-4

Andreas93 [3]

Answer:

2(x+3)=x-4

2x+6=x-4

2x-x=-4-6

x=-10

3 0

3 years ago

Read 2 more answers

What is the slope of the line that passes through the points (-8, -6)(−8,−6) and (-18, 6) ?(−18,6)?

ivolga24 [154]

Answer:

Slope: $\frac{12}{10}$

8 0

3 years ago

What is the answer? Please

ryzh [129]

D is not equivalent because it equals 4/25 y 5 I think

3 0

3 years ago