2 years ago

Please help me is importe

Mathematics

2 answers:

____ [38]2 years ago

7 0

It is D you are on it

beks73 [17]2 years ago

6 0

Answer

D. 20

Explanation

The common denominator of fractions is the least common multiple of the denominators.

The least common multiple of 4 and 5 is 20.

Therefore the common denominator of 1/4 and 3/5 is 20.

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Suppose f(x) = 1/4 over the range a ≤ x ≤ b, and suppose P(X > 4) = 1/2.

Anettt [7]

Answer:

a=2

b=6

Step-by-step explanation:

Assuming a uniform distribution and that a ≤ x ≤ b, if f(x) = 1/4, then:

$f(x) =\frac{1}{4}=\frac{1}{b-a}\\b-a = 4$

If P(X > 4) = 1/2, then:

$\frac{1}{2} = 1-(\frac{x-a}{b-a})=1-(\frac{4-a}{4})\\a-4+4 =\frac{1}{2}*4\\ a=2\\b=4+a\\b=6$

The values for a and b are, respectively, 2 and 6.

3 0

3 years ago

Joel made some muffins. He gave 1/4 of of the muffins to a neighbor. He took 3/8 of the muffins to school. What fraction of the

dolphi86 [110]

Okay! So 1/4 = 2/8 and 3/8 = 3/8 3/8+2/8= 5/8
3/8 is your answer

6 0

3 years ago

jeka57 [31]

Answer:

The scale factor is $\frac{3}{2}$

Step-by-step explanation:

The volume of the original prism is $V_P=980cm^3$

The volume of the dilated prism is $V_Q=3307.5cm^3$

Let the scale factor be $k$ .

To find the volume of the dilated prism, we multiplied by $k^3$ .

$\Rightarrow 980k^3=3307.5$

$\Rightarrow k^3=\frac{3307.5}{980}$

$\Rightarrow k^3=\frac{27}{8}$

$\Rightarrow k=\sqrt[3]{\frac{27}{8}}$

$\Rightarrow k=\frac{3}{2}$

8 0

2 years ago

There are 600 students at a middle school. If 60% of the students are girls, how many students at the middle school are girls?

mash [69]

Answer:

360!

Step-by-step explanation:

4 0

3 years ago

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A 30-DAY SUBSCRIPTION IS $499 PLUS 8% TAX. IT IS BEING PRORATED FOR 7 DAYS, WITH A $10 OFF COUPON APPLIED. WHAT'S THE COST? SHOW

zepelin [54]

Answer:

what are you paying 100 dollars a week for

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2 years ago

Please help me is importe ​

Please help me is importe