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Sophie [7]
2 years ago
15

State whether the lines are parallel, perpendicular, coinciding, or neither y=0.3x+40 and y=-3 1/3x+15

Mathematics
1 answer:
aksik [14]2 years ago
7 0

Answer:

Perpendicular

Step-by-step explanation:

The slope of the first equation is 0.3 = 3/10

You need the opposite sign of the reciprocal for perpendicular

10/3 is reciprocal, 3 1/3 is equivalent, - 3 1/3 is perpendicular

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A perfect square is the square of an integer. Of the integers from 2 through 99, how many have at least one perfect square facto
N76 [4]

Answer:

Six numbers have perfect square factors

Step-by-step explanation:

The numbers with perfect square factors are those numbers that have perfect squares as one of the numbers that can divide them.

They include:

4 = 2 * 2

16 = 4 * 4

36 = 6 * 6

49 = 7 * 7

64 = 8 * 8

81     = 9* 9

These numbers above have perfect square factors because they are formed from integers that multiply themselves.

8 0
2 years ago
What are the mean absolute deviation and population standard deviation of this data set? Round to the nearest tenth if necessary
tekilochka [14]

Answer:

For a data set of N elements:

{x₁, x₂, ..., xₙ}

The mean is:

M = \frac{x_1 + x_2 + ... + x_n}{N}

The mean absolute deviation is:

MAD = \frac{|x_1 - M| + ... + |x_n - M|}{N}

And the population standard deviation is:

PSD = \frac{\sqrt{|x_1 - M|^2 + ... + |x_n - M|^2} }{\sqrt{N}}

In this case, our set has 5 elements, and the set is:

{2, 4, 6, 9, 14}

The mean of this set is:

M = \frac{2 + 4 + 6 + 9 + 14}{5} = 7

The mean absolute deviation is:

MAD = \frac{|2 - 7| + |4 - 7| + |6 - 7|+ |9 - 7| + |14 - 7| }{5} = 3.6

And the population standard deviation is:

PSD =  \sqrt{\frac{|2 - 7|^2 + |4 - 7|^2 + |6 - 7|^2+ |9 - 7|^2 + |14 - 7|^2 }{5}} = 4.2

6 0
2 years ago
A store charges a restocking fee for any returned item based upon the item price. An item priced at $200 has a fee of $12. An it
Vesna [10]

Divide the restocking fee by the price of the item:


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9/150 = 0.06

Multiply by 100 to get the percent:

0.06 x 100 = 6%

Answer: 6%

3 0
2 years ago
What is the solution to the following system
Archy [21]

C is the answer.............

3 0
3 years ago
Read 2 more answers
Desi says that there are more ounces in 1 t than there are pounds. Do you agree?
Alenkinab [10]

Answer: Yes, I agree.

Step-by-step explanation: I Agree to this because there are 2,00 pounds in 1 ton, But there are 32,000 ounces in 1 ton.

5 0
3 years ago
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