3 years ago

Solve using elimination 2x-y=-22 and -7x+y=67 (9,4) (-9,-4) (-4,9) (-9,4)

Mathematics

1 answer:

suter [353]3 years ago

8 0

Answer: (-9,4)

Step-by-step explanation:

2x-y=-22

-7x+y=67

-5x=45

x=-9

2(-9)-y=-22

-18-y=-22

-y=-4

y=4

You might be interested in

ILL MARK U BRILLIANT PLEASE I NEED HELP

ahrayia [7]

Answer:

table, graph or equation

8 0

3 years ago

A party size bag of tortilla chips normally costs 3.80. The supermarket has them on sale today for 2.85.what is the percentage o

3241004551 [841]

The percentage of the discount is 75%

8 0

3 years ago

Read 2 more answers

a coin is tossed. find the probability of the coin landing on heads. write your answer as a fraction, percent, and decimal

inysia [295]

Since there are only two sides (heads & tails) to a coin:
Probability (as fraction) - 1/2
Probability (as percent) - 1/2 x 100 = 50%
Probability (as decimal) - 1 x 50/2 x 50 = 50/100 = 0.5

(P.S. Please mark this answer as the brainliest answer... Thank You)

6 0

3 years ago

Read 2 more answers

How to solve 45 45 90 triangle given hypotenuse?

statuscvo [17]

From the Special Triangle Theorem, the hypotenuse is equal to the side lengtht times the Sqrt(2).
So hypotenuse H = xSqrt(2), x=H/Sqrt(2).
Using numbers, if H = 7, then x = 7/Sqrt(2) = 7Sqrt(2)/2 to rationalize it.

4 0

3 years ago

Determine the kinetic energy of a 100-kg roller coaster car that is moving with a speed of 20.0/ms.

rjkz [21]

Answer:

The kinetic energy is 20,000\ J

Step-by-step explanation:

The kinetic energy of a body is defined as:

$k = \frac{1}{2}ms ^ 2$