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3 years ago

What is the average of -30 -15 -20 55

Mathematics

2 answers:

defon3 years ago

8 0

Answer:

-2.5

Step-by-step explanation:

-30 + (-15) + (-20) + 55 = -10. Then you divide it by how many numbers there are (4). Which equals - 2.5. If this is wrong, then round up to -3.

IRINA_888 [86]3 years ago

6 0

Answer:

${ \tt{ = \frac{ (- 30) + ( - 15) + ( - 20) + 55}{4} }} \\ \\ = { \tt{ \frac{ - 10}{4} }} \\ \\ = { \tt{ - \frac{5}{2} }}$

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On Monday morning the temperature was 38°F, but by the afternoon the temperature had risen 22°F. On Tuesday morning the temperat

Anika [276]

The temperature on Tuesday afternoon is below 38 degrees Fahrenheit. As it states in the question the temperature on Tuesday morning was 27 degrees Fahrenheit and rose 10 more degrees at noon. Which makes is 37 degrees Fahrenheit at noon on Tuesday. You get this by taking 27 degrees and adding 10 degrees.

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3 years ago

Read 2 more answers

Does the point (0, 0) satisfy the equation y = 9x?

miskamm [114]

Answer:

yes it does

Step-by-step explanation:

because the equation y=9x does not have a y-intercept (all slopes come in the form y=mx+b -- it can be written differently though) and since there is no 'b' that means the y-intercept is 0. So whenever there is no y-intercept, the slope starts at 0.

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2 years ago

A rectangular garden has vertices at (4, 3), (6, 3), (6, 9), and (4, 9). Plot each vertex of the garden.

kati45 [8]

Answer:

Step-by-step explanation:

A rectangular garden has vertices at

(x = 4, y = 3), (x = 6, y = 3), (x = 6, y = 9), and (x = 4, y = 9).

To plot each vertex of the garden find on the graph the x and y coordinate of the point and mark the point.

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2 years ago

Consider each equation. is it the equation of the line that is parallel or perpendicular to y=3x+2? Select yes or no for a-c

Mkey [24]

Answer:

see explanation

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x + 2 is in this form with slope m = 3

• Parallel lines have equal slope

• The slopes of perpendicular lines are negative reciprocals of each other

y = - $\frac{1}{3}$ x - 8 has slope m = - $\frac{1}{3}$

3 and - $\frac{1}{3}$ are negative reciprocals

This line is perpendicular to y = 3x + 2

y = 3x - 10 has slope m = 3

This line is parallel to y = 3x + 2

y = 2x + 4 has slope m = 2

This line is neither parallel nor perpendicular to y = 3x + 2

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3 years ago

Which expression is equal to (x-3)(x-2)/(x+3)(x-3)

Tju [1.3M]

Answer:

$\frac{x-2}{x+3}$

Step-by-step explanation:

given $\frac{(x-3)(x-2)}{(x+3)(x-3)}$

the factor (x - 3) can be cancelled from the numerator/ denominator leaving

$\frac{x-2}{x+3}$

3 0

3 years ago