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yKpoI14uk [10]
3 years ago
15

A camp needs 100 students to help with 4-year-old campers. Eight students from 4 different classes have agreed to help. How many

more students are there
Mathematics
1 answer:
dimaraw [331]3 years ago
4 0

Answer: 32 students

Step-by-step explanation: 8 x 4 = 32  

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Answer:

16. 200+3

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18. 200+70+6+0.1+0.03

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Step-by-step explanation:

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3 years ago
What is the property the statement illustrates7•m=m•7?
marishachu [46]
That would be the commutative property
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What’s this answer ? Please help!!!
UNO [17]

Surface area = Area of rectangle + Areas of triangles.

Area of rectangle = 9cm * 15cm = 135cm2.

Areas of triangles = 6cm * 3cm = 18cm2.

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3 years ago
If you have 3 sticks of length 2 cm, 3 cm and 5 cm. What kind of triangle these sticks would form? Justify your answer.
stepan [7]

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3 0
2 years ago
The weights of 67 randomly selected axles were found to have a variance of 3.85. Construct the 80% confidence interval for the p
VLD [36.1K]

Answer:

3.13

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 67

Variance = 3.85

We have to find 80% confidence interval for the population variance of the weights.

Degree of freedom = 67 - 1 = 66

Level of significance = 0.2

Chi square critical value for lower tail =

\chi^2_{1-\frac{\alpha}{2}}= 51.770

Chi square critical value for upper tail =

\chi^2_{\frac{\alpha}{2}}= 81.085

80% confidence interval:

\dfrac{(n-1)S^2}{\chi^2_{\frac{\alpha}{2}}} < \sigma^2 < \dfrac{(n-1)S^2}{\chi^2_{1-\frac{\alpha}{2}}}

Putting values, we get,

=\dfrac{(67-1)3.85}{81.085} < \sigma^2 < \dfrac{(67-1)3.85}{51.770}\\\\=3.13

Thus, (3.13,4.91) is the required 80% confidence interval for the population variance of the weights.

8 0
3 years ago
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