Answer:
Scott
Step-by-step explanation:
20/25=.8 .8=80%
.815*100=81.5%
81%
After finding a decimal and multiplying by 100, you get the percent so you can compare. 81.5% is the highest, so Scott had the highest score.
Hope this helps. Please put brainliest if you can!
X represent the number of laps Marcy swam, 1 1/4x represent the number of times Toni swam.
20 + 0.80(1 1/4x) + 15 + 0.85x = 257
20 + x + 15 + 0.85x = 257
1.85x + 35 = 257
Required equation is 1.85x + 35 = 257
Answer:
2(2x^2 - x + 1)
Step-by-step explanation:
you write you problem 9x^2 - 2x - 5x^2 + 2 = 2(2x^2 - x + 1)
You collect the like terms by subtracting their coefficients
(9-5)x^2
Subtract the numbers
4x^2
4x^2 - 2x + 2
Factor out 2 from the expression
2(2x^2 - x + 1)
So the way I would do this is by finding 72 heads with them all being chickens. So basically multiply 72 by 2 to get 144 legs. So this means that 56 more legs are needed. And since the difference between legs of chickens and rabbits is two, then we just divide 56 by two to figure out how many rabbits there are.
56/2 = 28
And then to figure out the number of chickens, just do 72 - 28 = 44.
So there are 28 rabbits, and 44 chickens.
Answer:
that should be 32
Step-by-step explanation:
