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2 years ago

Can someone help me please!!

Mathematics

1 answer:

Reika [66]2 years ago

3 0

Answer:

X = 12

4x + 12 = 5x
subtract 4x on each side and you're left with x=12

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What u.s. customary unit is closest to a kilogram???

iren2701 [21]

Pound is closest to a kilogram

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3 years ago

Solve 2/3 a number plus 4 is 7

eimsori [14]

2/3n +4 = 7

2/3n = 3

n = 3 / 2/3

n = 4 1/2

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3 years ago

Maya has 760 carrots. 27% of them went rotten. What number of the carrots ARE'NT rotten?

Alja [10]

Answer:

About 554 carrots aren't rotten.

Step-by-step explanation:

100% - 27% = 73%

73% = 0.73

760 x 0.73 = 554.80

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2 years ago

Read 2 more answers

The U.S. Department of Housing and Urban Development publishes data on the fair market monthly rent for existing one-bedroom hou

Aleksandr [31]

Answer:

$n=(\frac{1.960(80)}{25})^2 =246.73 \approx 247$

So the answer for this case would be n=247 rounded up to the nearest integer

Step-by-step explanation:

We know that the standard deviation is :

$\sigma = 80$ represent the deviation

The margin of error is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (a)

And on this case we have that ME =25 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=(\frac{z_{\alpha/2} \sigma}{ME})^2$ (b)

The critical value for 95% of confidence interval now can be founded using the normal distribution and the critical value would be $z_{\alpha/2}=1.960$ , replacing into formula (b) we got:

$n=(\frac{1.960(80)}{25})^2 =246.73 \approx 247$

So the answer for this case would be n=247 rounded up to the nearest integer

8 0

2 years ago

Write an equation of the line that passes through (9, 2) and is parallel to the line below

Alex777 [14]

Answer:

y=5/3x-13

Step-by-step explanation:

We must use the point-slope form(parallel lines have the same slope, remember that!)

y-y1=m(x-x1)

y-2=5/3(x-9)

y-2=5/3x-15

y=5/3x-13

4 0

2 years ago