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mojhsa [17]
3 years ago
8

What is 74/10 = ? ?/?

Mathematics
2 answers:
larisa86 [58]3 years ago
7 0

Answer:

7.4

Step-by-step explanation:

Gud luck on the rest of your school work :)

docker41 [41]3 years ago
7 0

Answer:

the correct answr is 7.4 buuuuuut...... u can also write it as a percent which os 740% alsooooo...... u can right it as a fraction which is 74/10 now you have to simplify and u would get 37/5 simplify one more time and u will get 7 2/5. may u have a great life and day. thanks

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Some transportation experts claim that it is the variability of speeds, rather than the level of speeds, that is a critical fact
scZoUnD [109]

Answer:

Explained below.

Step-by-step explanation:

The claim made by an expert is that driving conditions are dangerous if the variance of speeds exceeds 75 (mph)².

(1)

The hypothesis for both the test can be defined as:

<em>H</em>₀: The variance of speeds does not exceeds 75 (mph)², i.e. <em>σ</em>² ≤ 75.

<em>Hₐ</em>: The variance of speeds exceeds 75 (mph)², i.e. <em>σ</em>² > 75.

(2)

A Chi-square test will be used to perform the test.

The significance level of the test is, <em>α</em> = 0.05.

The degrees of freedom of the test is,

df = n - 1 = 55 - 1 = 54

Compute the critical value as follows:

\chi^{2}_{\alpha, (n-1)}=\chi^{2}_{0.05, 54}=72.153

Decision rule:

If the test statistic value is more than the critical value then the null hypothesis will be rejected and vice-versa.

(3)

Compute the test statistic as follows:

\chi^{2}=\frac{(n-1)\times s^{2}}{\sigma^{2}}

    =\frac{(55-1)\times 94.7}{75}\\\\=68.184

The test statistic value is, 68.184.

Decision:

cal.\chi^{2}=68.184

The null hypothesis will not be rejected at 5% level of significance.

Conclusion:

The variance of speeds does not exceeds 75 (mph)². Thus, concluding that driving conditions are not dangerous on this highway.

7 0
3 years ago
Find the are of each figure
Umnica [9.8K]

Answer:

I think the figure of N and E of 48in is 2304. The figure of I and E and N and A of 32in is 1024. The figure of L and I and L and A is 144.

Step-by-step explanation:

To find the area, you have to multiply of each side in each figure. For example, Figure A and B and C and D of 16in is 16 × 16 which is 256.

A = Area

a = Side

A = 2304, A = a^2 = 48^2 = 2304.

A = 1024, A = a^2 = 32^2 = 1024.

A = 144, A = a^2 = 12^2 = 144.

I hope this answers your question!

8 0
2 years ago
Twice the sum of Paloma's age and 15 is 106. How old is Paloma?
fredd [130]

Answer: 121

Step-by-step explanation:

4 0
2 years ago
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The following integers represent several dives of a submarine: -270 feet, -418 feet, -572 feet, -372 feet, -639 feet and -455 fe
sveticcg [70]
The answer is -270 because its closer to 0 than any other numbers
6 0
3 years ago
Can somebody help with this!!!! please.
kvasek [131]

Answer:

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Step-by-step explanation:

2(x+x+3)

2(x-3)(x-1)

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