Answer:
The equation for the amount of dollars pledged in total is f(M) = 2.00M + 7.25, and the amount for just Kiara is f(M) = 0.25M + 5.25
Step-by-step explanation:
The amount they pledge up front is a constant and therefore need to be added to the end of the equation. The amount per mile should be a variable amount. This gets multiplied by the M variable. So we start with the Kiara amount.
0.25 per mile = 0.25M
5.25 pledged = 5.25
Now put them together to get f(M) = 0.25M + 5.25
Do the same with Mark.
1.75 per mile = 1.75M
2.00 pledged = 2.00
Now put them together to get f(M) = 1.75M + 2.00
To get the final total, we add both equations together.
f(M) = 0.25M + 5.25 + 1.75M + 2.00
f(M) = 2.00M + 7.25
The 15th day.
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Brainliest answer would be appreciated!
Answer:
x=5
y=−1
Step-by-step explanation:
x+y=4
2x−5y=15
In order to solve by elimination, coefficients of one of the variables must be the same in both equations so that the variable will cancel out when one equation is subtracted from the other.
x+y=4,2x−5y=15
To make x and 2x equal, multiply all terms on each side of the first equation by 2 and all terms on each side of the second by 1.
2x+2y=2×4,2x−5y=15
Simplify.
2x+2y=8,2x−5y=15
Subtract 2x−5y=15 from 2x+2y=8 by subtracting like terms on each side of the equal sign.
2x−2x+2y+5y=8−15
Add 2x to −2x. Terms 2x and −2x cancel out, leaving an equation with only one variable that can be solved.
2y+5y=8−15
Add 2y to 5y.
7y=8−15
Add 8 to −15.
7y=−7
Divide both sides by 7.
y=−1
Substitute −1 for y in 2x−5y=15. Because the resulting equation contains only one variable, you can solve for x directly.
2x−5(−1)=15
Multiply −5 times −1.
2x+5=15
Subtract 5 from both sides of the equation.
2x=10
Divide both sides by 2.
x=5
The system is now solved.
x=5,y=−1
Answer:
-6<y<-4
Step-by-step explanation:
-4<y+2<-2
-4-2<y+2-2<-2-2
-6<y<-4
Answer:
Answer: 6^2
Step-by-step explanation:
Givens
- Express the integers raised to a power as integers.
- 10^2 = 100
- 4^3 = 64
Solution
- Subtract 64 (which is 4^3) from 100. See if what is left is a power of 6
- 100 - 64 = 36 Yes the remainder is 36
- 36 = 6*6 = 6^2