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kenny6666 [7]
3 years ago
14

What 2 numbers add to the bottom number but also multiplies to be the top.​

Mathematics
1 answer:
jek_recluse [69]3 years ago
8 0
Answer would be 39 and thats no cap
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jonah paid $25 for dues to a cub last year. This year he paid $35 for dues. By what percent did his dues increase
4vir4ik [10]

Answer:

40 % increase

Step-by-step explanation:

percent increase = (new - original)/ original

percent increase = (35-25)/25

                            = 10/25

                            =.4

                   multiply by 100

40 percent

4 0
3 years ago
According to the U.S. Bureau of Labor Statistics, 20% of all people 16 years of age or older do volunteer work. In this age grou
Murljashka [212]

Answer:

1. P(X≥35) = 0.0183

2. P(X≤21) = 0.0183

3. P(0.18<p<0.25) = 0.7915

Step-by-step explanation:

We have the proportion for women: pw=0.22, and the proportion for men: pm=0.19.

1. We have a sample of 140 woman and we have to calculate the probability of getting 35 or more who do volunteer work.

This is equivalent to a proportion of

p=X/n=35/140=0.25

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.22*0.78}{300}}\\\\\\ \sigma_p=\sqrt{0.0006}=0.0239

We calculate the z-score as:

z=\dfrac{p-p_w}{\sigma_p}=\dfrac{0.25-0.22}{0.0239}=\dfrac{0.03}{0.0239}=0.8198

Then, the probability of having 35 women or more who do volunteer work in this sample of 140 women is:

P(X>35)=P(p>0.25)=P(z>2.0906)=0.0183

2. We have to calculate the probability of having 21 or fewer women in the group who do volunteer work.

The proportion is now:

p=X/n=21/140=0.15

We can calculate then the z-score as:

z=\dfrac{p-p_w}{\sigma_p}=\dfrac{0.15-0.2}{0.0239}=\dfrac{-0.05}{0.0239}=-2.0906

Then, the probability of having 21 women or less who do volunteer work in this sample of 140 women is:

P(X

3. For the sample with men and women, we use the proportion for both, which is π=0.2.

The sample size is n=300.

Then, the standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.2*0.8}{300}}\\\\\\ \sigma_p=\sqrt{0.0005}=0.0231

We can calculate the z-scores for p1=0.18 and p2=0.25:

z_1=\dfrac{p_1-\pi}{\sigma_p}=\dfrac{0.18-0.2}{0.0231}=\dfrac{-0.02}{0.0231}=-0.8660\\\\\\z_2=\dfrac{p_2-\pi}{\sigma_p}=\dfrac{0.25-0.2}{0.0231}=\dfrac{0.05}{0.0231}=2.1651

We can now calculate the probabilty of having a proportion within 0.18 and 0.25 as:

P=P(0.18

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3 years ago
STOPPPP promising Brainliest if ur NOT GONNA GIVE IT.
Diano4ka-milaya [45]

Answer:

i a free can I have brainliest

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2 years ago
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para una actividad escolar, un curso de 30 estudiantes decide reunir sobres de salsa de tomate y paquetes de tallarines. cada es
Pie

Answer:

30.7777

Step-by-step explanation:

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3 years ago
Please help asap!!<br><br> problem down below!
Airida [17]

Answer:

A

Step-by-step explanation:

b

b c

c d

d a

y esa ser la responsable respuesta

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2 years ago
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