All categories

3 years ago

2x + 3y = –19 –2x − y = 1

1 answer:

6 0

The x both cancels out

So you’re left with 2y=-18 (add 3y to negative y and -19 and 1)

Divide by 2 and y equals -9

Plug in y to get x

2x + 3(-9) = -19

2x + -27 = -19

Add 27 to both sides

2x= 8

Divide by 2, x= 4

So x= 4 and y = -9

You might be interested in

5+7k>=-30 and -4k +4>20

Slav-nsk [51]

Answer:

$\large\boxed{-5\leq k$

Step-by-step explanation:

$5+7k\geq-30\ \wedge\ -4k+4>20\\\\5+7k\geq-30\qquad\text{subtract 5 from both sides}\\7k\geq-35\qquad\text{divide both sides by 7}\\\boxed{k\geq-5}\\\\-4k+4>20\qquad\text{subtract 4 from both sides}\\-4k>16\qquad\text{change the signs}\\4k$

7 0

3 years ago

Pablo has completed 44 deliveries so far this week. He needs to make 55 deliveries for the week. What

Dennis_Churaev [7]

Answer:

Step-by-step explanation:

step one:

completed delivery = 44

total delivery to be made= 55

Step two

Required is the percentage completed

the formula is

=completed/total*100

=44/55*100

=0.8*100

=80%

Hence Pablo has completed 80% of the deliveries so far

3 0

2 years ago

Use the graph of the function f to solve the inequality.

guajiro [1.7K]

Answer: im sorry i don''t no the answer im sorry i hope some one can help you ok :) :(

Step-by-step explanation:

6 0

2 years ago

Subtracting Integers! What is (-10) - 9?

klio [65]

The answer is (-10) - 9= -19

4 0

3 years ago

Read 2 more answers

Sort each expense as either a fixed expense or a variable expense.

mixer [17]

Answer:

fixed - monthly rent, car payment, savings for new guitar

variable - movies, video games, snacks

Step-by-step explanation:

Fixed costs are costs that do not vary with output.

the amount of rent paid is fixed.

Variable costs are costs that vary with production

the amount paid at the movies depend on the number of movies watched

6 0

3 years ago