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3 years ago

15

The double number line shows the number of children 111 adult supervises on a field trip. Complete the table to show the same in

formation as the double number line. Adults Children 888 666666 151515

1 answer:

klemol [59]3 years ago

8 0

Answer:

8 48

11 66

15 90

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Suppose a varies directly as b, and a=7 when b=2 find b when a =21

kozerog [31]

Because α varies directley to β
$\alpha = k \beta$
(k = constant)

α=7 when β=2
7= 2k
k= $\frac{7}{2}$

so when α=21
21= $\frac{7}{2}$ b
b= 6

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4 years ago

In a division of a company, 15% of the women and 25% of the men are working on a project. 60% of the division are women. what pe

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19%
In the division, 60% are women and 100%-60% = 40% are men. And for this project, we have 15% of the women, or 15%*60% = 9% of the personal and 25% of the men or 25% * 40% = 10% of the personal working on the project. Therefore 9% + 10% = 19% of the division is working on the project.

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3 years ago

sam went to western playland he paid $20 to get in and $5 per ride.He has a total of $50 to spend wich equation can we use to se

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Answer:

the equation 20+5r=50 should help you see how many rides he can ride.

Step-by-step explanation:

20+5r=50

1. <em>Subtract 20 from both sides. </em>

5r=30

2. <em>Divide by 5 to isolate r.</em>

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Sam can ride 6 rides.

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3 years ago

A publisher reports that 45% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is

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Answer:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

$p_v =2*P(z$

Step-by-step explanation:

Information given

n=370 represent the sample selected

$\hat p=0.4$ estimated proportion of readers owned a laptop

$p_o=0.45$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:

Null hypothesis: $p=0.45$

Alternative hypothesis: $p \neq 0.45$

The statistic is:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

Calculating the p value

We have a bilateral test so then the p value would be:

$p_v =2*P(z$

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3 years ago

In Mr. Romero's class there are 25 students, 13 participate in school sports. What percent of the class participates in school s

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Answer:

52 Percent participate in school sports.

Step-by-step explanation:

13/25 = x/100

Multiply 13 x 100 = 1300

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Move the decimal point two places to the left, and then you get your answer of 52%

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3 years ago