Solve the system using the addition method.
–5x – 9y = 28
–4x + 5y = –2
a. (–2, –2)
b. (7, –4)
c. (7, 6)
d. (–11, 3)

Option A

Step-by-step explanation:

–5x – 9y = 28    Equation 1

–4x + 5y = –2    Equation 2

We to eliminate one of the variables. In this case "Y" by using the appropiate number, in this case

–5x – 9y = 28

*{–4x + 5y = –2  

We have:

–5x – 9y = 28

We have:

–5x = 28

So, We have:

-61X= 122

Using Equation 2. We have:

-4*(-2)+5Y=-2

8+5Y=-2

5Y=-10

Y=

Finally:

X=-2

Y=-2

the correct answer is b) histograms can be used to exhibit the shape of distributions. this is because histograms count the frequency of each possible answer, so one is able to see which results are more common and which are less common.

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!