When a line passes through the two points $(x_{1},y_{1}) and (x_{2},y_{2})$ , its slope is given by the formula $m= \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

In this question, a line L passes through the points $(1,1) and (7,8)$

So, its slope is given by $m=\frac{8-1}{7-1}$

$m=\frac{7}{6}$

When two lines are perpendicular, then the product of their slopes is -1.

Since, the slope of the line L is $\frac{7}{6}$ , so the slope of the line which is perpendicular to the given line L is $\frac{-6}{7}$ as the product of $\frac{-6}{7} \times \frac{7}{6}=-1$ .

8 0

3 years ago

Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing t

eimsori [14]

The <em>correct answer</em> is:

C) x/21

Explanation:

Since Person 1 can complete the entire job (100% = 1/1 = 1) in 21 minutes, this person can complete 1/21 of the job per minute. This is Person 1's rate. If x is the amount of time it takes both people together to finish the job, then the amount of work Person 1 does would be (1/21)(x) = x/21.

7 0

3 years ago

What is 10 1/5 - 2 in 1/6 ?

aalyn [17]

If you want it in mixed number form it is
8 1/30
Decimal form is
8.03

4 0

3 years ago

Donald needs to stamp 145 pieces of mail. He has finished 97 pieces. How many more does he have to do? A. 58 B. 48 C. 42 D.

Sloan [31]

He has 48 left to do.

8 0

3 years ago

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