MATHEMATICS HIGH SCHOOL

Question 6 (1 point) If the area of a square is 121 square inches, what is the perimeter of the square? inches

Answers

Answer 1

Answer:

Answer:

44 inches

Step-by-step explanation:

The side length is the square root of the area:

A = s^2

121 in^2 = s^2

√(121 in^2) = s = 11 in

The perimeter of a square is 4 times the side length (since all four sides are the same length).

P = 4s = 4(11 in) = 44 in

The perimeter of the square is 44 inches.

Answer 2

Answer:

Question Given:

The area of a square is 121 square inches, what is the perimeter of the square? inches

Answer:

The perimeter = 44 inches

Explanation:

Area = 121 inches²

.°. Length of a side = √(121 inches²) = 11 inches

Now,

Perimeter of the square =

Length of a side×4

= 11 inches × 4

= 44 inches.

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What adds to 12 but multiplies to 9

Answers

The numbers are irrational, so they can't be written exactly.
Rounded to the nearest thousandth, they are

11.196
and
0.804 .

11.196 + 0.804 = 12
11.196 x 0.804 = 9.002...

3x3=9 3+9=12 if thats what youre asking

An article retails for $38.50. The city sales tax is 4%, and the federal excise tax is 7%. How much is the total tax?

Answers

4/100; 38.50 x 0.04= $1.54
7/100; 38.50 x 0.07= $2.70

$1.54 + $2.70= $4.24

First you add the two tax percentages together- 11%
Then you must find what 11% of $38.50 is;
So, you multiply $38.50 by .11; which is the equivalent of 11% of the total.
This equals $4.235, which would be your total tax.

Eleanor scores 680 on the mathematics part of the SAT. The distribution of SAT math scores in recent years has been Normal with mean 513 and standard deviation 81. Gerald takes the ACT Assessment mathematics test and scores 27. ACT math scores are Normally distributed with mean 22.7 and standard deviation 4.What is Elanor's standardized score?

Answers

Answer:

$z =(680-513)/(81)=2.06$

The Eleanor score is 2.06 deviations above the mean.

$z =(27-22.7)/(4)=1.08$

The Gerald score is 1.08 deviations above the mean.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Part a

Let X the random variable that represent the SAT scores of a population, and for this case we know the distribution for X is given by:

$X \sim N(513,81)$