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2 years ago

Which best describes the relationship between the line that passes through the points (-9, -7) and (-12, -2) and the line

Mathematics

1 answer:

o-na [289]2 years ago

8 0

Answer:

Step-by-step explanation:

The equation of the line that passes through the points (-9,-7) and (-12,-2) is

y = -5/3x-22

and

equation of the line that passes through the points (1, 9) and (6, 6) is

y = -3/5x+48/5

clearly it is not the same line,

$\frac{-5}{3}.\frac{-3}{5} \neq -1$ (lines are not perpendicular)

$\frac{-5}{3}\neq \frac{-3}{5}$ (not parallel)

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The price of an item has risen to $238 today. Yesterday it was $140. Find the percentage increase.

dedylja [7]

Answer:

The percentage increase is 70%

Step-by-step explanation:

There is a calculator that solves the problem for you just enter the 2 values that they ask for

8 0

3 years ago

Help? which one should I pick

Gnoma [55]

Answer:

my answer for is number 61

Step-by-step explanation:

Thats all I know.

7 0

3 years ago

Two angles form a linear pair. One angle measures (10x - 63). The other angle measures (8x)". What is the value of the larger

EleoNora [17]

Answer:

108 degrees

Step-by-step explanation:

Given

Let the angles be A and B

$A = 10x - 63$

$B = 8x$

Required

Find the larger angle

If both angles form linear pair, then the following relationship exist:

$A + B = 180$

Substitute values for A and B

$10x - 63 + 8x = 180$

Collect Like Terms

$10x + 8x = 180 + 63$

$18x = 243$

Solve for x

$x = \frac{243}{18}$

$x = 13.5$

Substitute 13.5 for x in

$A = 10x - 63$

$B = 8x$

$A= 10 * 13.5 - 63$

$A= 135 - 63$

$A= 72$

$B = 8 * 13.5$

$B = 108$

<em>Hence, the larger angle measures 108</em>

4 0

3 years ago

Tony took a math quiz last week. There were 80 problems on the quiz and Tony answered 70% of them correctly. How many problems d

Nutka1998 [239]

Answer:

56 problems

Step-by-step explanation:

So we already know that the answer is: 56. However, a good help is knowing how to obtain this answer from the data provided.

Tony's quiz had 80 questions

Tony correctly answered 70% of them.

We can always write a percentage amount as a ratio by dividing the amount by 100.

$70\% = \frac{70}{100} = 0.7$ .

This means that for every 100 questions, tony will respond correctly 70.

So, if Toni did a questionnaire of n questions, the amount that will answer correctly is calculated by the following expression:

$C = n*\frac{70}{100}$

If $n = 80$ then:

$C = 80 * \frac{70}{100}\\\\C = 56$

7 0

3 years ago

Read 2 more answers

Solve system by elimination <br> -9x+7y=22<br> 9x-5y=-26

alisha [4.7K]

Answer:

The solution would be (-4, -2)

Step-by-step explanation:

To find this simply add the two equations together.

-9x+7y=22

9x-5y=-26

----------------

2y = -4

y = -2

Now we have the y value, we can solve for the x value.

9x-5y=-26

9x-5(-2)=-26

9x+10=-16

9x=-36

x = -4

3 0

3 years ago