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Vilka [71]
3 years ago
14

Determine if the lines are parallel, perpendicular or neither. -2x + y = -4 and -19 - y = 1/2x

Mathematics
1 answer:
LekaFEV [45]3 years ago
8 0
The lines are perpendicular because the slopes are negative reciprocals of eachother.
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We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of
sergiy2304 [10]

Answer:

Margin of error = 0.773

Step-by-step explanation:

We are given the following information in the question.

Sample size, n = 20

Sample mean = 8

Sample standard deviation = 2

90% Confidence interval

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.10} = \pm 1.729  

Margin of error:

t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

1.729(\frac{2}{\sqrt{20}} ) = 0.773  

7 0
4 years ago
How do i solve 3y = 15x -2
Simora [160]

Answer:

2

Step-by-step explanation:

3 0
3 years ago
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A book is in the shape of a right rectangular prism. It measures 8 1/2 inches tall, 7 inches wide, and 2 1/2 inches thick. What
Alenkasestr [34]
Hello!

The formula for volume of a rectangular prism is:

V = lwh

Let's convert the dimensions to decimals, and then use the formula to solve.

8 1/2 = 8.5 as a decimal.

7 = 7 as a decimal.

2 1/2 = 2.5 as a decimal.

Multiply:

V = 8.5 × 7 × 2.5

V = 59.5 × 2.5

V = 148.75

148.75 = 148 3/4 as a fraction because if you convert 3/4 to a decimal by dividing the numerator by the denominator, it equals 0.75.

ANSWER:

The volume of the book is 148 3/4 inches cubed.

6 0
3 years ago
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K/4 - 5k + 1 = 1<br> please
irinina [24]

Answer:

-19k ≠ 0

No solutions

Step-by-step explanation:

k/4 - 5k + 1 = 1

4 (k/4 - 5k + 1 = 1)

k-20k + 4 = 4

-19k ≠ 0

4 0
3 years ago
Answer asap please ​
sergeinik [125]

Answer:

t = 0

If the loan is to be paid in 0 months, the amount is very large

m = 50

Of the loan is to be paid in an indefinite amount of time, monthly payment would be 50

Step-by-step explanation:

(12000 + 600t)/12t

1000/t + 50

Asymptotes:

t = 0

If the loan is to be paid in 0 months, the amount is very large

m = 50

Of the loan is to be paid in an indefinite amount of time, monthly payment would be 50

3 0
3 years ago
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