Answer: 10 dimes
Solve using system of equations.
q=number of quarters and d=number of dimes
.25q+.10d=5.50 because the total of dimes and quarters is $5.50
8+d=q because there are 8 more quarters than dimes
substitute 8+d for q into the first equation to get .25(8+d)+.10d=5.50
then simplify
2+.35d=5.50
.35d=3.50
d=10 he has 10 dimes
Answer:
(2,2)
Step-by-step explanation:
The graph of a function and that of its inverse should be always symmetric around the line y = x (goes at 45 degrees and crosses the origin of coordinates).
Therefore any intersection of the graphs must lie on the line y = x, which forces the x value of the intersection point to be the same as the y-value.
The only option shown where x and y have the same numerical value is the third listed option : (2,2)
2. Adding one together twice makes two
Answer:
x = 19/2 or 9.5
Step-by-step explanation:
Hello!
We can distribute the parenthesis and solve.
<h3>Solve</h3>
- 2(4x - 3) = 5(2x - 5)
- 2(4x) - 2(3) = 5(2x) - 5(5)
- 8x - 6 = 10x - 25
Move all x terms to one side and integer terms to the other
- 8x - 6 = 10x - 25
- -6 + 25 = 10x - 8x
- 19 = 2x
- x = 19/2
- x = 9.5
