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2 years ago

Solve the system of equations x + y = 0 and x + 9y= -48 by combing the eqatuons

Mathematics

1 answer:

lidiya [134]2 years ago

7 0

Answer:

x = 6

y = -6

Step-by-step explanation:

x + y = 0 (Multiply by -1)

x + 9y= -48

-x - y = 0

x + 9y= -48

8y = -48

y = -6

x + y = 0

x - 6 = 0

x = 6

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3 years ago

Find sin theta if theta is an angle in standard position and the point with coordinates (3, -4) lies on the terminal side of an

alisha [4.7K]

Answer:

$\sin \theta=-\frac{4}{5}$

Step-by-step explanation:

Given:

Angle is in standard position which means the starting ray is at the origin. The terminal side has coordinates (3, -4).

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2 years ago

on tuesday a local hamburger shop sold a combined total of 348 hameburgers and cheeseburger. the number of cheeseburger sold was

ANTONII [103]

Answer:

There were 261 Cheeseburgers and 87 Hamburgers sold on Tuesday

Step-by-step explanation:

Lets write some equations where H=Hamburgers and C=Cheeseburgers:

1) H+C=348

2) C=3H

1) Substitute 3H as C in the first equation:

3H+H=348

2) Combine alike terms:

4H=348

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3 years ago

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timurjin [86]

Answer:

True

Step-by-step explanation:

Absolute value tells the distance a number is from 0.

$|7|=7$ because 7 is 7 units away from 0.

$|-13|=13$ because -13 is 13 units away from 0.

$|0|=0$ because 0 is 0 units away from 0

Absolute value always produces a number greater than or equal to 0, never negative.

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2 years ago