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7nadin3 [17]
2 years ago
7

What is 70 + -50 x -2= ?

Mathematics
1 answer:
Nikitich [7]2 years ago
5 0

Answer: 170

Step-by-step explanation:

First, we need to do multiplication.

-50 x -2 = 100 because 2 negatives make a positive.

70 + 100 = 170.

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(20 points and brainlest to whoever answers correctly!!!)
Stells [14]

Answer:

y = -2/3x - 11

Step-by-step explanation:

Steps to find the perpendicular bisector:

1) Find the midpoint of line PQ

Midpoint formula: (\frac{x_{1} + x_{2} }{2} \\, \frac{y_{1} + y_{2}}{2})

Midpoint of line PQ = (6, -2)

2) Find the slope of line PQ

Slope formula: \frac{y_{2} - y_{1}}{x_{2} - x_{1}}

Slope of line PQ = 3/2

3) Find the negative reciprocal of the slope of PQ

To find the negative reciprocal just swap the numerator and denominator and add a negative sign. If it is already negative it will become positive.

In this case it will be -2/3

4) Write the equation of line PQ in slop-intercept form.

Slope-intercept form: y = mx + b

This is what it will look like for line PQ: y = \frac{3}{2}x + b

5) Plug the points of the midpoint into the line and solve for the intercept (b)

This is what it will look like: -2 = \frac{3}{2}(6) + b

-2 = 18/2 + b

-2 = 9 + b

-11 = b

6) Write the equation of the perpendicular bisector

m = the negative reciprocal of the slope of PQ = -2/3

This is what the equation will look like: y = -2/3x - 11

Hope this helped! Please give Brainliest!

5 0
3 years ago
448 = -5v + 8(-5 - 7v)<br> What is v?
lapo4ka [179]

Answer:

v = -8

Step-by-step explanation:

First we would have to distribute the 8(-5 - 7v). To do this we would multiply 8 by -5 and 8 by -7v to get 448=-5v-40-56v. After this, we would have to simplify like terms by subtracting 56v from -5v to get 448=-61v-40. We now have to get the variable on one side and to do that, we can add 40 to both sides to get 488=-61v. Finally to get the variable alone, we would have to divide both sides by -61 to get v=-8.

Brainliest would be appreciated!

3 0
2 years ago
Read 2 more answers
What number is the opposite of -40?
posledela

Answer:

the opposite of -40 is 40

8 0
3 years ago
Read 2 more answers
A) The lowest score was in third period. B) The highest score was in first period. Eliminate C) On average, first period did bet
Reptile [31]
Whats the question tho....
5 0
3 years ago
In order to make the expression below equivalent to ğ x + 6, which additional operation should be included in the
kakasveta [241]

Answer:

B

Step-by-step explanation:

5 0
3 years ago
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