you need to find to find the value of x and y.
2x>(-15-5y)
x>(-15-5y)/2
now put this in to other equation and solve for y and then put the y value in and find x.
Answer:
88:56 = 11:7
Step-by-step explanation:
Step One
Add the two ratios together 11 + 7 = 18
Now set up a ratio to solve for 11 parts out of 18
11:18 = x:144 Proportion
11 / 18 = x / 144 Equation: Cross mulitiply
11*144 = 18x Combine the left side
1584 = 18x Divide by 18
1584 / 18 = x
88 = x
That is the larger amount (11 is larger than 7)
Find the smaller amount
144 - 88 = 56
The two amounts are in the ratio of 11:7
88:56 = 11:7
I hopes this helps a little bit
Answer:
Step-by-step explanation:
<u>Circumference formula</u>
<u>Solving for radius</u>
- 64 = 2*3.14r
- r = 64/2*3.14
- r = 10.19 ft
Answer:
The pump fill the pool in 3/5 hours
Step-by-step explanation:
From noon to 1/4 hours later, the pool goes from 1/3 to 3/4 full. That's means that the pool fill X quantity in 1/4 hours, where X is calculate as:
So, the constant rate R can be calculated as:
That means that every hour the pool can be fill 5/3 full, so if we want to know how many hours is needed to fill the poll one time, we can write the following equation:
Where t is the time required to fill the pool. Solving for t we get:
t = 3/5 hours
so, the pump fill the pool in 3/5 hours or 36 minutes with a constant rate of 5/3.
2nd one, y=2x+3
so subsitute y with 2x+3 in other equation
2x-(2x+3)=7
2x-2x-3=7
0-3=7
-3=7
false
no solution
(also, the slopes of the lines are the same and therefor they are paralell and differnet y intercepts so never intersect)
no solution