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3 years ago

1

Mathematics

2 answers:

Aleks [24]3 years ago

5 0

Answer: 48 hope this helps

Margarita [4]3 years ago

4 0

Answer:

He would have to $3.17 in taxes

Step-by-step explanation:

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Is this scatterplot a positive or negative association?

Viefleur [7K]

Answer:

its negative

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is the area of a parallelogram whose vertices are A(-12, 2), B6, 2). C(-2,-3), and D(-20, – 3)

guapka [62]

Answer:

-35

Step-by-step explanation:

This value of "a" is exactly the y-coordinate of the vertex of the parabola

y = x%5E2+%2B+4x++-+31.

To find it, complete the square:

x%5E2+%2B+4x++-+31 = %28x%2B2%29%5E2+-+4+-+31 = %28x%2B2%29%5E2+-+35.

So, this value of "a" is a = -35.

5 0

3 years ago

PLEASE HELP ASAP !!!!!!!!!!!!!!!!!!!!!

lora16 [44]

Answer:

343.97

Step-by-step explanation:

The first one is 343.97. You times 324.5 with 6% also known as 0.006 which is 19.47.

Add 19.47 to 324.5 and you get 343.97

4 0

3 years ago

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Andrea's dad ran 12 miles and 75 minutes on a treadmill if he runs at that rate how far could he run in 30 minutes

Alexus [3.1K]

Answer: 187.5

Step-by-step explanation: Divide 75 by 12 to get 6.25 then multiply that by 30 to get 187.5.

6 0

3 years ago

Given values: 54, 65, 76, 43, 45, 76, 87 12, 23, 34, 67,65, 78, 45, 34. Given 95% confidence and sigma (population standard devi

Brums [2.3K]

Answer:

Option (D) None of the above.

Step-by-step explanation:

We are given the following data:

54, 65, 76, 43, 45, 76, 87, 12, 23, 34, 67,65, 78, 45, 34

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

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

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

$Mean =\displaystyle\frac{804}{15} = 53.6$

Sum of squares of differences = 0.16 + 129.96 + 501.76 + 112.36 + 73.96 + 501.76 + 1115.56 + 1730.56 + 936.36 + 384.16 + 179.56 + 129.96 + 595.36 + 73.96 + 384.16 = 6849.6

$S.D = \sqrt{\frac{6849.6}{15}} = 21.4$

Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$53.6 \pm 1.96(\frac{21.4}{\sqrt{15}} ) = 53.6 \pm 10.83 = (42.8,64.4)$

8 0

3 years ago