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3 years ago

I need help with this pleasee

Mathematics

2 answers:

Setler [38]3 years ago

4 0

76+20x
factor out 4
4 (19+5x)

so one possible dimensions of the rectangle is 4 by 19+5x

juin [17]3 years ago

3 0

4(19+5x)

Explanation;
First you have to find the Greatest Common factor(GCF). Then divide each number by the GCF. Last put the quotients in the parentheses and the GCF outside the parentheses.

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Jenna often babysits to earn extra money. On Friday night, she made $42 for babysitting 3 hours. On Saturday night she made $63

Tresset [83]

Answer:

4 hours

Step-by-step explanation:

5 0

2 years ago

The distribution of blood cholesterol level in the

qaws [65]

Answer: A. Mean of sampling means $=\mu=168\ Mg/dl$

Standard deviation of sampling means = $2.86\ mg/dl$

B. The probability that your sample has mean less than 165 is 0.1492 .

Given : The distribution of blood cholesterol level in the

population of young men aged 20 to 34 years is close to normal with

mean $\mu= 168$ Mg/dl and standard deviation $\sigma= 35$ mg/dl.

Sample size : n= 150

Let $\overline{x}$ sample mean values.

A. The mean and the standard deviation of the distribution of the sampling means would be :

Mean of sampling means = $\mu=168\ Mg/dl$

Standard deviation of sampling means = $\dfrac{\sigma}{\sqrt{n}}=\dfrac{35}{\sqrt{150}}$

$=\dfrac{35}{12.2474487}\\\\=2.85773803649\approx2.86\ mg/dl$

The probability that your sample has mean less than 165 would be

$P(\overline{x}$

Hence , the probability that your sample has mean less than 165 is 0.1492 .

7 0

3 years ago

Wjat are the x intercepts if y=x squared minus 100

Effectus [21]

Answer:

x = ± 10

Step-by-step explanation:

Given

y = x² - 100 ← a difference of squares , that is

y = x² - 10² = (x - 10)(x + 10)

To find the x- intercepts let y = 0 , that is

(x - 10)(x + 10) = 0

Equate each factor to zero and solve for x

x - 10 = 0 ⇒ x = 10

x + 10 = 0 ⇒ x = - 10

3 0

2 years ago

What shape is a quadrilateral with two sets of parallel equal sides and right angles

Nostrana [21]

A square because it has parrel sides and has equal sides and also has right angles

8 0

2 years ago

Help quick i will mark u brainlyest

Mumz [18]

4+48=52
if you divide 52 by 4 you should get 13.
this means michael paid 13 dollars per pizza :)

6 0

3 years ago