1 year ago

8x+9y=-28 -4x=y solve the system by subsitution

Mathematics

2 answers:

bixtya [17]1 year ago

8 0

Answer:

x= 1

y = -4

Step-by-step explanation:

8x + 9y = -28

-4x = y

8x + 9(-4x) = -28

8x - 36x = -28

-28x = - 28

x = 1

y = -4(1) = -4

Zielflug [23.3K]1 year ago

6 0

Answer:

Step-by-step explanation:

8 + 9 = 17

17y = 28

28 / 17 = 1.64

You might be interested in

The time between failures of a machine has an exponential distribution with parameter l. Suppose that the prior distribution for

ololo11 [35]

I'm like girl do you have plans. Can't keep my heart in your hands. She kicked me out I'm like vro.

6 0

3 years ago

marty has 1 1/3 jugs of apple juice. he uses 3/4 of the juice to make freeze pops. what fraction amount of a jus doe marty have?

Vedmedyk [2.9K]

Answer:

=2 $\frac{1}{12}$

Step-by-step explanation:

We have to make the fractions equal so we can add them

1 $\frac{1}{3}$ ×4= 1 $\frac{4}{12}$

$\frac{3}{4}$ ×3= $\frac{9}{12}$

1 $\frac{4}{12}$ + $\frac{9}{12}$ =2 $\frac{1}{12}$

5 0

2 years ago

Read 2 more answers

Solve for x: (2/5)(x-4)=2x

NARA [144]

Simplify brackets

2/5(x - 4) = 2x

Simplify 2/5(x - 4) to 2(x - 4)/5

2(x - 4)/5 = 2x

Multiply both sides by 5

2(x - 4) = 10x

Divide both sides by 2

x - 4 = 5x

Subtract x from both sides

-4 = 5x - x

Simplify 5x - x to 4x

-4 = 4x

Divide both sides by 4

-1 = x

Switch sides

8 0

3 years ago

A ________ is a range of values between which the value of the population parameter is believed to be, along with a probability

nignag [31]

The best answer out of the ones provided would be c, confidence interval

3 0

2 years ago

Read 2 more answers

Plzz help me find the answer

serious [3.7K]

It’s the first one 9/2.

5 0

2 years ago