Answer:
A. decrease
Step-by-step explanation:
The mean average number without the fifth test is 79.75 so her score went down. Hope this helped!
Answer:
(x, y)=(4,-8)
Step-by-step explanation:
9x+y=28
3x+3y=-12 /:(-3)
9x+y=28.......(1)
-x-y=4......(2)
9x+y=28
(1)+(2): 8x=32
9x+y=28
x=32/8
9x+y=28
x=4
9*4+y=28
x=4
36+y=28
x=4
y=28-36
x=4
y=-8
x=4
(x, y) =(4,-8)
Answer:
B) Dollars earned is the dependent variable, which often called y
Step-by-step explanation:
The dollars earned cannot be determined without knowing how many dogs were walked. In other words, the value of y is dependent on the x value.
Answer: y= 100x +1500
Step-by-step explanation:
The 1500 value never changes, so it doesn’t need a variable
The 100 value will change based on how many he sells, so it needs a variable
You divide the top number by the bottom number.
1/9 would be 1 divided by 9 and would equal .0.1111111111...
