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3 years ago

15

Can someone draw a model that represents the addition problem -3 1/2 + (-1 1/4) and determine the solution, please? It'd be much

appreciated!

1 answer:

densk [106]3 years ago

5 0

Answer:

$7 \frac{ \frac{1}{2} }{2}$

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Guys plzzz help me i don't know how to figure out this question 10(6x+7)=26

Mekhanik [1.2K]

What is x
First you use distributive property
60x+70=26
Next subtract 70 on both sides which gives you -44
60x=-44
Then you divide 60 into -44 which will give you -1.36__36 is repeathing
so X=-1.36 repeading

7 0

2 years ago

If John makes $36 for 4 hours of work at Mcdonals,what is his play per hour?

puteri [66]

Answer: $9 per hour

Step-by-step explanation:

$36 divided by 4 hours of work = $9 per hour

8 0

3 years ago

Read 2 more answers

The time, t, required to complete a job

tigry1 [53]

Answer:

19 hrs

Step-by-step explanation:

t varies inversely with number of people p

t = k/p

If it takes 7.125 hrs for 8 workers to do the job

K = tp

= 7. 125 x 8

= 57

How many hours will it take if there are 3 workers .

Recall t = k/p

t = 57/3

= 19 hrs

Therefore, It’ll take 19 hrs to Complete the job if there are only three workers.

3 0

3 years ago

The principal would like to assemble a committee of 4 students from the 16-member student council. How many different committees

mamaluj [8]

Answer:

4?

Step-by-step explanation:

4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4? 4?

3 0

3 years ago

We have five samples of data: sample A with 30 successes of 50 cases, sample B with 600 successes of 1000 cases, sample C with 3

faust18 [17]

Answer:

C. with 3000 successes of 5000 cases sample

Step-by-step explanation:

Given that we need to test if the proportion of success is greater than 0.5.

From the given options, we can see that they all have the same proportion which equals to;

Proportion p = 30/50 = 600/1000 = 0.6

p = 0.6

But we can notice that the number of samples in each case is different.

Test statistic z score can be calculated with the formula below;

z = (p^−po)/√{po(1−po)/n}

Where,

z= Test statistics

n = Sample size

po = Null hypothesized value

p^ = Observed proportion

Since all other variables are the same for all the cases except sample size, from the formula for the test statistics we can see that the higher the value of sample size (n) the higher the test statistics (z) and the highest z gives the strongest evidence for the alternative hypothesis. So the option with the highest sample size gives the strongest evidence for the alternative hypothesis.

Therefore, option C with sample size 5000 and proportion 0.6 has the highest sample size. Hence, option C gives the strongest evidence for the alternative hypothesis

3 0

3 years ago