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4 years ago

How many of the students correctly applies only the associative property to

Mathematics

1 answer:

Olenka [21]4 years ago

8 0

Associative property is used in algebraic or number equations

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A principal of a large high school wants to estimate the true proportion of high school students who use the community's public

denis-greek [22]

Considering the margin of error of a confidence interval, it is found that the correct option is:

It would be half as wide.

<h3>What is the margin of error of a confidence interval?</h3>

It is modeled by:

$M = z\frac{s}{\sqrt{n}}$

In which:

z is the critical value.

s is the standard deviation.

n is the sample size.

From this, we get that the margin of error is inversely proportional to the square root of the sample size. Then, multiplying the sample size by 4, when it changes from 50 to 200, cuts the margin of error in half, making the interval half as wide.

More can be learned about the margin of error of a confidence interval at brainly.com/question/25890103

5 0

3 years ago

A circular flower bed in a botanical garden has a radius of 4 feet. What is the area of the flower bed? Use 3.14 for r. The answ

Pepsi [2]

The area of a circle is A= pi*r^2
So we get
Area= 3.14* 4^2= 50.24ft^2

3 0

3 years ago

(This is a two-Step equation) Kittens weigh about 100 grams when born and gain 7 to 15 grams per day. If a kitten weighed 100 gr

sergij07 [2.7K]

22.5 days. You must divide

8 0

3 years ago

Please help solve all of these-

lana [24]

Answer:

3−y

2. 8

4.2bh

Step-by-step explanation:

5(2x+y)=15

2 Divide both sides by 55.

2x+y=\frac{15}{5}2x+y=

3 Simplify \frac{15}{5}

to 33.

2x+y=32x+y=3

4 Subtract yy from both sides.

2x=3-y2x=3−y

5 Divide both sides by 22.

x=\frac{3-y}{2}x=

1. 3−y

2. 8

2.Add 2y2y to both sides.

x=-8+2yx=−8+2y

2 Regroup terms.

x=2y-8x=2y−8

7 0

3 years ago

Which statement is true?

Shalnov [3]

A) -14 + 21 = -24 + 17 is false. There is no solution.
B) 16 + (-6) > 24 + (-13) is false. There is no solution.
C) -14 + (-10) > 2 + (-28) is true. It has infinite solutions.
D) -10 + (-8) > -12 + (-4) is false. There is no solution.

Answer: C

7 0

4 years ago