$4 / 8 = 50 cents per pen
.5 * 5 = 2.50
.5 * 3 = 1.50
Ivan pays $2.50 and Jeff pays $1.50
So let's say quarters = x and dimes = y. You'd then put x + y = 77 (for a total of 77 coins). And your second equation would be .25x + .10y = 12.50 (.25 for the total value a quarter holds and .10 for a total value a dime holds). Then you'd do matrices on a calculator.
If a square-shaped pool with side lengths are 3a^5 then find
the area of the pool
solution:
A = (3a^5) x (3a^5)
= 9a^5+5
= 9a^10
The area of the square-shaped pool are 9a^10 based on the given side length which is 3a^5
Eliza Savage received a statement from
her bank showing a checking account balance of $324.18 as of January 18.
Her own checkbook shows a balance of $487.38 as of January 29. The bank
returned all of the cancelled checks but three. The amounts of these
three checks are $15.00, $77.49, and $124.28. How much did Eliza deposit
in her account between January 18 and January 29?
<span><span>
<span>
<span>
</span></span></span><span><span><span>Its
D. $379.97</span></span></span></span>
