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monitta
3 years ago
6

Aaron has 5 dimes and 2 nickels. how much money does Aaron have?

Mathematics
2 answers:
lubasha [3.4K]3 years ago
8 0

Answer:

60 cent

Step-by-step explanation:

.10 + .10 +.10 + .10 + .10 = .50

.5 + .5 = .10

.50 + .10 = 60

Doss [256]3 years ago
7 0

Knowing that one dime has a 10 cent value and that a nickle has a 5 cent value, we can use multiplication or addition to find the answer.

5 x 10 = 50   5 dimes together are worth 50 cents.

2 x 5 = 10  2 nickles together are worth 10 cents.

50 + 10 = 60   5 dimes and 2 nickles are worth 60 cents when added together.

ANSWER: Aaron has 60 cents.

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GreenBeam Ltd. claims that its compact fluorescent bulbs average no more than 3.50 mg of mercury. A sample of 25 bulbs shows a m
Harrizon [31]

Answer:

(a) Null Hypothesis, H_0 : \mu \leq 3.50 mg  

     Alternate Hypothesis, H_A : \mu > 3.50 mg

(b) The value of z test statistics is 2.50.

(c) We conclude that the average mg of mercury in compact fluorescent bulbs is more than 3.50 mg.

(d) The p-value is 0.0062.

Step-by-step explanation:

We are given that Green Beam Ltd. claims that its compact fluorescent bulbs average no more than 3.50 mg of mercury. A sample of 25 bulbs shows a mean of 3.59 mg of mercury. Assuming a known standard deviation of 0.18 mg.

<u><em /></u>

<u><em>Let </em></u>\mu<u><em> = average mg of mercury in compact fluorescent bulbs.</em></u>

So, Null Hypothesis, H_0 : \mu \leq 3.50 mg     {means that the average mg of mercury in compact fluorescent bulbs is no more than 3.50 mg}

Alternate Hypothesis, H_A : \mu > 3.50 mg     {means that the average mg of mercury in compact fluorescent bulbs is more than 3.50 mg}

The test statistics that would be used here <u>One-sample z test</u> <u>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 mg of mercury = 3.59

            \sigma = population standard deviation = 0.18 mg

            n = sample of bulbs = 25

So, <em><u>test statistics</u></em>  =  \frac{3.59-3.50}{\frac{0.18}{\sqrt{25} } }

                               =  2.50

The value of z test statistics is 2.50.

<u>Now, P-value of the test statistics is given by;</u>

         P-value = P(Z > 2.50) = 1 - P(Z \leq 2.50)

                                             = 1 - 0.9938 = 0.0062

<em />

<em>Now, at 0.01 significance level the z table gives critical value of 2.3263 for right-tailed test. Since our test statistics is more than the critical values of z, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which </em><em><u>we reject our null hypothesis</u></em><em>.</em>

Therefore, we conclude that the average mg of mercury in compact fluorescent bulbs is more than 3.50 mg.

6 0
3 years ago
9. The total length of the Trans-Canada Highway is 7870 km. About 6% of
nadezda [96]

Answer:

472.2 km

Step-by-step explanation:

5 0
3 years ago
Benjamin has enough icing to cover a 12-square-foot cake.
bazaltina [42]

Answer:

The area of each of the 2 equal-sized cakes shall behalf of 12 ft²: 12 ft² / 2 = 6 ft²

Step-by-step explanation:

5 0
3 years ago
If the point on the graph is below the origin, x coordinates must be negative.
mariarad [96]

Answer:

true

Step-by-step explanation:

if the point if below or to the left of the origin, it is negative. if it is above or to the right of the origin, it is positive

8 0
3 years ago
What is 0.375 expressed as a fraction
Leno4ka [110]
0.735 expressed as a fraction is 3/8
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