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Ket [755]
2 years ago
13

What is 2 8/15+ 1 1/30

Mathematics
2 answers:
Andrei [34K]2 years ago
8 0
The answer is 3 17/30
Mice21 [21]2 years ago
3 0

Answer:

3 17/30

Step-by-step explanation:

In order to do this problem, we have to get the two fractions to have the same denominator

So we change 2 8/15 into 2 16/30 (multiplying both the numerator by 2, if you don't know why this works then ask me) and then we just add. So 2 16/30 + 1 1/30 = 3 17/30

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The ration of girls to boys in a marching band is 10to8 if there are 32 boys in the marching band how many of the students in th
daser333 [38]

Answer:

40 girls

Step-by-step explanation:

if there r 32 than u know 8 times 4 equals 32. Then u have to multiply 4 on the other side as well. So 10 times 4 equals 40 girls

5 0
3 years ago
What is 25% of 10? can someone explain how to do the problem?
Scorpion4ik [409]
25/100 =0.25
10 x 0.25= 2.5
7 0
3 years ago
Read 2 more answers
I have no idea how to work this problem out and the answer
NeTakaya

Answer:

B, D, C, A

Step-by-step explanation:

The question is asking to put the photographers into least to greast.

For the best case, I suggest you change them into decimals and put them in order.

Photgrapher A: 2/5 = 0.4 = 40%

Photographer B: 4% = 0.04 = 4%

Photographer C: 0.29 = 29%

Photographer D: 27/100 = 0.27 = 27%

Now put them into least to greatest.

Photographer B, Photographer D, Photographer C, And Photographer A

3 0
3 years ago
Read 2 more answers
Describe the sampling distribution of p(hat). Assume the size of the population is 30,000.
Naya [18.7K]

Answer:

a) \mathbf{\mu_ \hat p = 0.6}

b) \mathbf{\sigma_p =0.01732}

Step-by-step explanation:

Given that:

population mean \mu = 30,000

sample size n = 800

population proportion p = 0.6

a)

The mean of the the sampling distribution is equal to the population proportion.

\mu_ \hat p =  p

\mathbf{\mu_ \hat p = 0.6}

b)

The standard deviation of the sampling distribution can be estimated by using the formula:

\sigma_p = \sqrt{\dfrac{p(1-p)}{n}}

\sigma_p = \sqrt{\dfrac{0.6(1-0.6)}{800}}

\sigma_p = \sqrt{\dfrac{0.6(0.4)}{800}}

\sigma_p = \sqrt{\dfrac{0.24}{800}}

\sigma_p = \sqrt{3 \times 10^{-4}}

\mathbf{\sigma_p =0.01732}

7 0
3 years ago
Three terms of an arithmetic sequence are shown below. Which recursive formula defines the sequence? f(1) = 6, f(4) = 12, f(7) =
Nikitich [7]
F(n) = 2(n+2)

can also be written as
f(n) = 2n + 4
4 0
3 years ago
Read 2 more answers
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