-4(2y)+11y=15, -8y+11y=3y=15: y=5
X=2(5)=10
To check your work -4(10)+11(5)=15
15=15
Answer:
B
Step-by-step explanation:
280 + 5(–5) + (–42) + 2(75) + (–200)
280 - 25 - 42 + 150 - 200
280 - 67 + 150 - 200
280 - 67 - 50
213 - 50
= $163
Answer:
its 5/4! haha i used to be good at this when i was in 6th grade:)
Answer:
- premium: 165 gallons
- water: 120 gallons
Step-by-step explanation:
Let 'a' represent the amount of 95% antifreeze in the mix. Then the amount of water is (285 -a). The mix has this amount of antifreeze in it:
0.95a +0(285 -a) = 0.55(285)
a = 0.55/0.95(285) = 165 . . . gallons of 95%
285 -a = 285 -165 = 120 . . . . gallons of water
There are 120 gallons of water and 165 gallons of premium antifreeze in the mixture.
Answer:
Step-by-step explanation:
Given that Jared invested some money in a company's stock. Luckily for Jared, the company became very popular and the value of Jared's investment this morning is 7 times as large as the value of his investment yesterday morning.
a) Suppose Jared invested amount P
Today its value is 7P
i.e. 700% of yesterday value is value of Donald's investment this morning
b) Increase in value in one day from yesterday to today = 6 times P
i.e. increase in percent = 600%
Change in investment = +600%
