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EastWind [94]
3 years ago
10

HELP PLZ ASAP WORTH XTRA POINTS!! INCLUDES SCREENSHOT

Mathematics
1 answer:
Rainbow [258]3 years ago
4 0

Answer:

99

Step-by-step explanation:

8x-13+7x-17=180( because stright angle = 180 degree)

15x-30=180

15x=210

x=14

8(14)-13= 99

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Molly's hair was 20 inches long. Three years later it was 53 inches long. What was the percent increase, to the nearest hundredt
Georgia [21]

Find how much it grew:

53 - 20 = 33 inches.

Divide the amount it grew by the original length

33/20 = 1.65

Subtract 1:

1.65 - 1 = 0.65

Multiply by 100 for percent:

0.65 x 100 = 65%

The percent increase is 65%

4 0
3 years ago
Find the mean and median of the following data set:<br> -25, 10, 40, -15, 0, 35, 15, -10
emmasim [6.3K]

Answer:

Mean 6.25

Median 5

Step-by-step explanation:

Youre welcome

8 0
3 years ago
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3 years ago
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If the original quantity is 14 and the new quantity is 22, which of these is the best estimate for the percent of change?
julsineya [31]
D 22-14=8 14-7=7 7 of 14=50% so i think that’s the best estimate
8 0
2 years ago
1. What is the slope of a line that is perpendicular to the x-axis ​
Ket [755]

Answer:

The slope of a line that is perpendicular to the x-axis ​is undefined.

Step-by-step explanation:

We know that the x-axis is a horizontal line.

  • We also know a line that is perpendicular to the x-axis ​is basically a vertical line.
  • As the slope of a perpendicular line is undefined because no matter what the value of y is, the x-value remains the same.

Therefore, the slope of a line that is perpendicular to the x-axis ​is undefined.

For example, the slope between (1, 2) and (1, 4) is:

Using the slope formula

Slope = m =  [y₂ - y₁] /  [x₂ - x₁]

                 = [4 - 2] / [1 - 1]

                  = 2 / 0

                  = ∞

8 0
3 years ago
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