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Arturiano [62]
3 years ago
8

732,178+167-642,137=please evaluate

Mathematics
2 answers:
pashok25 [27]3 years ago
4 0

Answer: 90,208

Step-by-step explanation:

Assuming you are not using a calculator, follow PEMDAS and solve accordingly.

First take 732,178, then add 167, then subtract 642,137.

zepelin [54]3 years ago
3 0

Answer:

Around 175.80

Step-by-step explanation:

732/178 + 167 - 642/137 =

366/89 + 167 - 642/137

4 10/89 +167 - 642/137

8.80 +167

175.80

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At a bake sale Bailey is selling plates with 3 chocolate chip cookies each Julio is selling plates with 2 sugar cookies each if
erastovalidia [21]

Answer:

the least cookies someone can buy from one person is 6

Step-by-step explanation:

8 0
3 years ago
An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W. From pre
melamori03 [73]

Answer:

We conclude that a compact microwave oven consumes a mean of more than 250 W.

Step-by-step explanation:

We are given that an appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W with a population standard deviation of 15 W.

They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W.

Let \mu = <u><em>mean power consumption for microwave ovens.</em></u>

So, Null Hypothesis, H_0 : \mu \leq 250 W     {means that a compact microwave oven consumes a mean of no more than 250 W}

Alternate Hypothesis, H_A : \mu > 250 W     {means that a compact microwave oven consumes a mean of more than 250 W}

The test statistics that would be used here <u>One-sample z test statistics</u> as we know about the population standard deviation;

                                T.S. =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = sample mean power consumption for ovens = 257.3 W

            σ = population standard deviation = 15 W

            n = sample of microwave ovens = 20

So, <em><u>the test statistics</u></em>  =  \frac{257.3-250}{\frac{15}{\sqrt{20} } }

                                      =  2.176

The value of z test statistics is 2.176.

<u>Now, at 0.05 significance level the z table gives critical value of 1.645 for right-tailed test.</u>

Since our test statistic is more than the critical value of t as 2.176 > 1.645, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <u>we reject our null hypothesis</u>.

Therefore, we conclude that a compact microwave oven consumes a mean of more than 250 W.

7 0
3 years ago
What is the vertex of the graph shown below? Write your answer in the form<br> (x,y).
Leni [432]

Answer:(-3,-1.5)

Step-by-step explanation: the vertex is the point then the line starts to bend. that would be (-3,-1.5).

3 0
2 years ago
What is the value of the expression when y = 24? **Twelve less that eight times y.
vfiekz [6]

answer: 180

Step-by-step explanation:

8y-12

plug in the variable

8 (24) - 12

192-12

180

6 0
3 years ago
This is a little cunfusing lol
Luba_88 [7]

Answer: its C

Step-by-step explanation: cause i did that already

5 0
3 years ago
Read 2 more answers
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