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Alinara [238K]
3 years ago
11

NEED HELP ASAP!!!!! lots of points

Mathematics
2 answers:
Shalnov [3]3 years ago
8 0
The answer is
A. 2pi/3
Setler [38]3 years ago
7 0

Answer:

c

Step-by-step explanation:

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The city school district is considering increasing class size in the elementary schools. However, some members of the school boa
Snezhnost [94]

Answer:

The null hypothesis would say that class size has no effect on students learning.

Step-by-step explanation:

Null hypothesis is a type of hypothesis that is used in statistics which proposes that there is no difference between a certain characteristic of a population or the data - generating process.

Now, in this question,the school district is considering increasing class size in the elementary schools but we want to check whether larger classes may have a negative effect on students learning.

Thus, the null hypothesis would reject this claim of larger classes having negative effect on students and say that class size has no effect on students learning.

6 0
3 years ago
Answer plzz i really really really need help
IgorC [24]

Answer:

A,D,E, and F

Step-by-step explanation:

5 0
3 years ago
WILL GIVE BRAINLIEST AND 25 POINTS!<br> Evaluate 8 [1/4]<br> A. 0<br> B. 1<br> C. 2<br> D. 3
Leokris [45]

Answer:

2

Step-by-step explanation:

4×2 (1/4)

The 4 would cancel out to give

2 (1/1) =2

8 0
3 years ago
Read 2 more answers
Hazel drove 41 miles. Hazel's car used 2 gallons of gas. How many miles per gallon did Hazel's car get? HELP!
horrorfan [7]

Answer:

she used 20.5 miles per gallon!

Step-by-step explanation:

41/2 = 20.5

3 0
3 years ago
The graph of the function P(x) = −0.34x2 + 12x + 62 is shown. The function models the profits, P, in thousands of dollars for a
STatiana [176]

Answer:

0 ≤ x < 1.12 and 34.18 < x ≤ 39.87

Step-by-step explanation:

<u><em>The options of the question are</em></u>

−4.57 ≤ x ≤ 39.87

1.12 ≤ x ≤ 34.18

−4.57 ≤ x ≤ 1.12 and 34.18 ≤ x ≤ 39.87

0 ≤ x < 1.12 and 34.18 < x ≤ 39.87

Let

x ----> is the number of tires produced, in thousands

C(x) --->  the production cost, in thousands of dollars

we have

C(x)=-0.34x^{2} +12x+62

This is a vertical parabola open downward (the leading coefficient is negative)

The vertex represent a maximum

The graph in the attached figure

we know that

Looking at the graph

For the interval [0,1.12) ----->  0\leq x

The value of C(x) ----> C(x) < 75

That means ----> The production cost is under $75,000

For the interval (34.18,39.87] -----> 34.18 < x\leq 39.87

The value of C(x) ----> C(x) < 75

That means ----> The production cost is under $75,000

Remember that the variable x (number of tires) cannot be a negative number

therefore

If the company wants to keep its production costs under $75,000 a reasonable domain for the constraint x is

0 ≤ x < 1.12 and 34.18 < x ≤ 39.87

3 0
3 years ago
Read 2 more answers
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