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just olya [345]
2 years ago
8

The mean of nine numbers is 12 , if one of the numbers is removed ,

Mathematics
1 answer:
lys-0071 [83]2 years ago
8 0

Answer:

  • 4

Step-by-step explanation:

Mean of 9 numbers is 12.

<u>Total of 9 numbers:</u>

  • 9*12 = 108

Mean of 8 numbers is 13.

<u>Total of 8 numbers:</u>

  • 8*13 = 104

<u>Removed number:</u>

  • 108 - 104 = 4
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14 out of the 25 students passed the quiz. What percent of students passed the quiz ?
Mnenie [13.5K]

Answer:

56

Step-by-step explanation:

A fraction consists of two numbers and a fraction bar:

14/25

The number above the bar is the numerator: 14

The number below the bar is the denominator: 25

Divide the numerator by the denominator to get fraction's value:

Val = 14 ÷ 25

Hoped it helped

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Andrew needs to print a document that is 180 pages long. How much longer will it take to print the document on a Sure-Fire print
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Line 1 passes through the points A(-15,-8) and B(-3,0). Line 2 has
Katyanochek1 [597]

Answer:

The equation of line 3 is;

y = \frac{2}{3} x + 6

Step-by-step explanation:

Line 1 passes through the points A(-15,-8) andn B(-3,0)

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<u />

Slope = change in y-axis ÷ change in x-axis

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Picking another point (x,y) on the line;

Slope = \frac{y - 0}{x - -3}  = \frac{2}{3}

y = \frac{2}{3} x + 2 (this is the equation of line 1)

<u>Equation of line 2:</u>

<u />

We put the equation given, of line 2, in the cartesian plane format;

3y = 5x + 18

y = \frac{5}{3} x + 6

Finally, the equation of line 2 is;

y = 1\frac{2}{3} x + 6

<u>Equation of line 3:</u>

<u />

Given: Line 3 is parallel to line 1

The slopes of two parallel lines are the same so line 3 has a slope of \frac{2}{3}

Given: Line 3 has the same y-intercept as line 2

The y-intecept of line 2 is 6 (y-intercept is the value of y when x = 0)

So the equation of line 3 is;

y = \frac{2}{3} x + 6

3 0
2 years ago
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Sergio039 [100]
Answers: (y = 2) and (x = 1)

Steps:

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