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nataly862011 [7]

3 years ago

6

At a certain middle school, there are 26 students per teacher in every homeroom. Is the total number of students proportional to

the number of teachers

1 answer:

Verizon [17]3 years ago

6 0

Yes, because there is a corresponding amount of teachers per student.

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A real estate agent needs to estimate the average value of a residential property of a given size in a certain area. The real es

alexira [117]

Answer:

Follows are the solution to this question:

Step-by-step explanation:

$95 \% \$ the confidence level for z:

$\alpha = 1 - 95 \% \\\\$

$= 1 - 0.95 \\\\ = 0.05$

$\to \frac{\alpha}{2} = \frac{0.05}{2} = 0.025\\\\\\to Z \ \frac{\alpha}{2} = Z_{0.025} = 1.96$

Calculating the Margin of error:

$E = Z\ \frac{\alpha}{2} \times ( \frac{\sigma}{\sqrt{n}})$

$= 1.96 \times ( \frac{5000}{\sqrt{\sqrt{100}}})\\\\= 980$

The population means estimate a 95 % confidence interval is:

$\to \bar{x} \frac{+}{-} E\\\\ = \$ 90000 \frac{+}{-} 980$

5 0

3 years ago

How do you read this expression 8(8x+7) and 8(3x)+8(7)

Misha Larkins [42]

Answer:

64x+56 & 24x+56

Step-by-step explanation:

I hope this is what you mean because this is not an equation as it is not set equal to anything.

Both problems solved by distributive property -

8*8x + (8*7) = 64x+56

8*3x + (8*7) = 24x+56

4 0

3 years ago

Sumy is working in geometry class and is given figure ABCD in the coordinate plane to reflect. The coordinates of point D are (a

Makovka662 [10]

Answer:

(b, a)

Step-by-step explanation:

Example if D was (3, 2) and reflects across y = x, D' will be (2, 3)

8 0

3 years ago

Read 2 more answers

Is 5 1/2 yds greater than 192 ins?

iren2701 [21]

Answer:

no

Step-by-step explanation:

there is 12 inches in a foot

there are 3 feet in a yard

3 x 12 = 36 in in a yard

36 x 5 1/2 is 198

198 is greater than 192

6 0

2 years ago

What is the name given to a polynomial with 10 terms

Zolol [24]

Answer:

It should be called A decic polynomial

Step-by-step explanation:

7 0

2 years ago