How do I solve this Y= -8x+56 2x+2y=56

1 answer:

7 0

Y = -8x + 56
2y= -2x + 56 (you want to get rid of one variable then solve for it then solve for the other)

-2(y=-8x+56)
2y=-2x+56

-2y=16x-112
2y=-2x+56 (see how multi the first equation by -2 gets the y's to cancel so can solve for x. Now sum up the equations)
0= 14x-56
x= 4

now plug x=4 into any original equation Y=-8x+56
Y = -8(4)+56
Y=24

hope this helps

You might be interested in

Many realistic application involve sampling without replacement. For example, in manufacturing, quality control inspectors sampl

stich3 [128]

Answer:

a. possible sample size is 10

b. mean is 3

c standard deviation is 0.9

Step-by-step explanation:

Mean of any given set of numbers is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers.

Standard deviation is a measure of the amount of variation or dispersion of a set of values.

Go to attachment for detailed analysis.

4 0

4 years ago

For the data shown in the stem-and-leaf plot, what is the effect on the mean and median of adding the value 10 to the data set?

alekssr [168]

The correct answer for the question that is being presented above is this one: "<span> C. The mean is decreased by about 1.2 and the median is decreased by 2." </span>For the data shown in the stem-and-leaf plot, the effect on the mean and median of adding the value 10 to the data set is that t<span>he mean is decreased by about 1.2 and the median is decreased by 2.</span>

5 0

4 years ago

Read 2 more answers

A sapling that started out 14 inches tall grew 4 inches per year. How old was the sapling when it was 46 inches tall?

tatyana61 [14]

Answer:

8 years old

Step-by-step explanation:

46 - 14 = 32 inches of growth

32 inches / 4 inches = 8 years

3 0

3 years ago