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3 years ago

Is each line parallel, perpendicular, or neither parallel nor perpendicular to the line −3x+5y=−15 ?

Mathematics

2 answers:

AysviL [449]3 years ago

8 0

Perpendicular means that it has a slope that is the reciprocal of the original, and parallel means that the slopes are the same.

m_a_m_a [10]3 years ago

8 0

Tip:

With these kinds of equations focus on the x and y values

Same exact values = parallel

x and y values are swapped = perpendicular

anything else = neither

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What is the equation for a line

USPshnik [31]

Answer:

y = mx + b

Step-by-step explanation:

y represents the dependent variable (value you are getting).

m represents the slope of the line.

x represents the independent variable (what you are changing).

b represents the y-intercept, or the y value when x is zero.

4 0

2 years ago

Read 2 more answers

Calculate the value of the sample variance. Round your answer to one decimal place. 9_5,9_5,2,9_5

Ugo [173]

Answer:

$s^2 = 0.01$

Step-by-step explanation:

Given

Values: 9/5, 9/5, 2, 9/5

Required

Calculate the sample variance

Sample variance is calculated using:

$s^2 = \frac{\sum (x_i - \overline x)^2}{n - 1}$

First, we calculate the mean

$\overline x = \frac{\sum x}{n}$

$\overline x = \frac{9/5 + 9/5 + 2 + 9/5}{4}$

$\overline x = \frac{7.4}{4}$

$\overline x = 1.85$

$s^2 = \frac{\sum (x_i - \overline x)^2}{n - 1}$ becomes

$s^2 = \frac{(9/5 - 1.85)^2+(9/5 - 1.85)^2+(2 - 1.85)^2+(9/5 - 1.85)^2}{4 - 1}$

$s^2 = \frac{(-0.05)^2+(-0.05)^2+(0.15)^2+(-0.05)^2}{4 - 1}$

$s^2 = \frac{0.0025+0.0025+0.0225+0.0025}{3}$

$s^2 = \frac{0.03}{3}$

$s^2 = 0.01$

Hence, the variance is 0.01

5 0

2 years ago

Solve for Z. 42=-7(z-3)

elixir [45]

42/7=Z-3

6=Z-3

Z=6+3

Z=9

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2 years ago

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Hypotenuse c of a right triangle with legs of a =10 and b =15

sergiy2304 [10]

10² + 15² = 325

√325 = 18

8 0

2 years ago

How to solve negative exponents? (Extended,long)

defon

Easily, you write the inverse of it without a minus
so if you were to find x^(-2) it would be (1/x)^2
The rest is all the same

6 0

3 years ago