Answer: x=-y-30/10
1) subtract 30 from both sides
y−30=−10x
2) divide both sides by -10
-y-30/10=x
3) switch sides
x=-y-30/10
Answer:
20.
$18.40.
Step-by-step explanation:
The mean number of people = (12+19+17+26+26)/5
= 100/5
= 20.
Karmin's original hourly rate = 480/30
= $16 per hour.
With a 15% rise it is 16 * 1.15
= $18.40 / hour.
(-3/10)^2=(-3/10)(-3/10)=9/100
The total number of marbles in the bag is 7, since 3+4=7. There are 3:4 black marbles, so 3/7 of the bag is black marbles, which can be written as 3:7.
4/7 of the bag is red marbles, which can be written as 4:7