If m2=115,what is m1

Answers

Answer 1

Answer:

Answer:

65 this is right on Edg.

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Answers

Answer:

66 2/3 %

Step-by-step explanation:

First find the students not in the 8th grade

24 - 8 = 16

16 students are not in the 8th grade

Take the fraction of the students not in the 8th grade over the total

16/24 = 2/3

Change to a decimal

.66666666666

Multiply by 100 to change to a percent

66.666666%

66 2/3 %

Answer:

66.67% of students are not in eighth grade

Step-by-step explanation:

8/24=1/3

1/3=0.33333333333

1-0.33333333333=0.66666666667

0.66666666667=66.67%

Which of the following sentences describes an equilateral triangle?A:
Two sides are the same length.

B:
Each angle is less than 90 degrees.

C:
One of the angles equals 90 degrees.

D:
The lengths of all three sides are the same.

Answers

D is the answer “The lengths of all three sides are the same

Find the equation of a line through (1,1) whichisperpendicular to a line through (1,3) and (2,5).

Answers

Answer:

$y=(-1)/(2)x+(3)/(2)$

Step-by-step explanation:

Point on a line is (1,3) and (2,5).

$slope=(y_2-y_1)/(x_2-x_1) =(5-3)/(2-1) =2$

slope of given line is 2

slope of perpendicular lines are negative reciprocal of one another

slope of perpendicular line is -1/2

slope = -1/2 (1,1)

$y-y_1=m(x-x_1)$

$y-1=(-1)/(2)(x-1)$

$y-1=(-1)/(2)x+(1)/(2))$

add 1 on both sides

$y=(-1)/(2)x+(3)/(2)$

uppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.2 and a standard deviation of 1.49. Using the empirical rule, what percentage of American women have shoe sizes that are less than 12.67

Answers

Answer:

99.85% of American women have shoe sizes that are less than 12.67

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 8.2

Standard deviation = 1.49

Using the empirical rule, what percentage of American women have shoe sizes that are less than 12.67

12.67 = 8.2 + 3*1.49

12.67 is 3 standard deviations above the mean.

Since the normal distribution is symmetric, 50% of the measures are below the mean and 50% are above. Of those 50% above, 99.7% are between the mean and 12.67. So

0.5 + 0.997*0.5 = 0.9985

99.85% of American women have shoe sizes that are less than 12.67

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