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2 years ago

12

What is the standard deviation for the data set? 138, 129, 145, 134, 142, 159, 153, 142, 127 Express your answer as a decimal to

the nearest tenth. Enter your answer in the box.

1 answer:

morpeh [17]2 years ago

6 0

Answer:

9.9107124982123

Step-by-step explanation:

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Is it greater than, equal to, or less than

Kisachek [45]

Answer: Greater than

Answer: Greater than

8 0

2 years ago

If anyone knows how to do this

iogann1982 [59]

Answer:

1) 47

2) 4

Step-by-step explanation:

Complimentary = 90 degrees

1) 43 + ? = 90

? = 47

2) 86 + ? = 90

? = 4

8 0

2 years ago

8. 36.8 = [11.5 – (2.5 X 3)]2

Anestetic [448]

Answer:

$[11.5-(2.5*3)]^2=16$

Step-by-step explanation:

We want to evaluate $[11.5-(2.5*3)]^2$

Let us evaluate within the parenthesis first:

$[11.5-(2.5*3)]^2=[11.5-(7.5)]^2$

$\implies [11.5-(2.5*3)]^2=[11.5-7.5]^2$

We again subtract within the bracket to obtain:

$[11.5-(2.5*3)]^2=[4]^2$

This finally gives us:

$[11.5-(2.5*3)]^2=16$

6 0

2 years ago

Which statement is true about the equations –3x + 4y = 12 and 1/4x –1/3 y = 1?The system of the equations has exactly one soluti

iren [92.7K]

Answer:

The system of the equations has no solution; the two lines are parallel.

Step-by-step explanation:

The equations have the same slope. In standard form, this can be seen as the same coefficients for x and y. We will multiply the second equation by -12 to reveal this.

$\frac{1}{4} x-\frac{1}{3}y=1 \\-12(\frac{1}{4} x-\frac{1}{3}y=1)\\\frac{-12}{4} x-\frac{-12}{3}y=-12\\-3x+4y=-12$

This means the equations are parallel and will never cross. There is no solution.

4 0

2 years ago

Gabriel uses 0.4 gallon of gasoline each hour mowing lawns. How much gas does he use in 4.2 hours

Sveta_85 [38]

0.4 gallons * 4.2 hours = 1.68 gallons

Gabriel uses 1.68 gallons in 4.2 hours.

3 0

2 years ago