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3 years ago

Find the missing side length. When the area is 12ft.

Mathematics

1 answer:

pogonyaev3 years ago

5 0

Answer: Since you are finding the missing side of a rectangle, it is 3.

Step-by-step explanation:

Area of rectangle= (l)(w)

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Help first one to answer correctly get brainliestthank uuuu

Alika [10]

Answer:

when in doubt pick c

Step-by-step explanation:

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3 years ago

What is 4 times what = 1?

saveliy_v [14]

Answer:

.25 4(.25) = 1

Step-by-step explanation:

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3 years ago

Read 2 more answers

Caleb bought a boogie board and used a coupon for $8.50 off of the cost. Fill in the box with the expression that represents the

jenyasd209 [6]

I think this is the answer sorry if I'm wrong
(B)-8.50=T

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3 years ago

One hundred teachers attended a seminar on mathematical problem solving. The attitudes of representative sample of 12 of the tea

andrew11 [14]

Answer:

a) 1.92

b) 3.25

c) 1.5

d) -5.23

Step-by-step explanation:

We are given the following in the question:

4, 7, -1, 1, 0, 5, -2, 2, -1, 6, 5, -3

a) mean of score change

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{23}{12} = 1.92$

b) standard deviation for this population

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

Sum of squares of differences = 126.92

$\sigma = \sqrt{\frac{126.92}{12}} = 3.25$

c) median change score

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$

Sorted data: -3, -2, -1, -1, 0, 1, 2, 4, 5, 5, 6, 7

Median =

$\dfrac{6^{th} + 7^{th}}{2} = \dfrac{1+2}{2} = 1.5$

d) change score that is 2.2 standard deviations below the mean.

$x = \mu - 2.2(\sigma)\\x = 1.92-2.2(3.25)\\x = -5.23$

4 0

3 years ago

If g(a)=12, then what is g(2a)?

raketka [301]

I honestly dont know but my guess is 24

5 0

3 years ago