X=29 and y=10
You would isolate one of the variables and then plug the expression into the other equation to find the value of one variable. Then you would plug this value into the other equation to determine the value of the remaining variable.
Answer:
The first two is x=60
Step-by-step explanation:
1.5/90 = 1/x
1.5x = 90 x 1
1.5x/1.5 = 90/1.5
x = 60
The equation for the graph is m=250-25w
Answer:
No, none of the number need to be 48 for the mean to be 48. To get a mean, you add up all the number and divide it by the amount of numbers.
Example:
the mean of 10, 79, 42, 88, 19, and 50 is 48, but the actual number 48 was not part of the set.
10 + 79 + 42 + 88 + 19 + 50 = 288
288 ÷ 6 = 48
I'm just going to go out on a limb and guess that you mean to type $8,000.
If so then he will be saving $60.
The way I found that was by multiplying the $8,000 by the %s in decimal form
So, 8,000*0.115= 920
And, 8,000*0.1225= 980
980-920=60. Karl is saving $60