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2 years ago

In Ellen’s sixth grade class there are 14 boys and 11 girls write each ratio using numbers in two ways

Mathematics

2 answers:

r-ruslan [8.4K]2 years ago

7 0

Answer:

Step-by-step explanation:

Arturiano [62]2 years ago

6 0

Dbdbdbdbfb vs she six ja sis sus and sus is sus did did en she she dnd s

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Jeremy is the oldest of four brothers. Each of the four boys gets an allowance for doing chores at home each week. The amount of

frez [133]

$12.75-$11.25= $1.50, $9.75-$1.50= $8.25 his little brother should get $8.25 hope it helps

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3 years ago

The average weekly salary of two employees is $5250. One makes $500 more than the other. Find their salaries.

irga5000 [103]

Answer: thier salaries are $5000 and $5500

Step-by-step explanation:

Let the average weekly salary of one employee be =x

And that of the other employee be = x+500

Such that if thier average of their salaries= $5250

So, their total salary= $5250 x 2=10,500

The equation to solve each employee salary becomes

x+x+500=10,500

2x+500=10,500

2x=10,500-500

2x=10,000

x=10,000 /2

x= first employee salary =$5000

second employee = x+500 =$5500

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3 years ago

What are two basic parts of a fraction

bearhunter [10]

Answer:

Numerator and denominator

Step-by-step explanation:

Numerator is the top number

Denominator is the bottom number

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3 years ago

Must a function that is decreasing over a given interval always be negative over that same interval ? Explain

Leno4ka [110]

Check the picture below.

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3 years ago

Read 2 more answers

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

nexus9112 [7]

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:

$p_v =2*P(z$

8 0

2 years ago