Answer:
3
x
2
+
2
x
−
2
Step-by-step explanation:
Answer:
1. 0.75 cups or 3/4 cups
2. 0.75 cups or 3/4 cups
3. 10 quarts in 2 1/2 gallons
4. 3 3/4 or 3.75
5. 3/4 gallon
6. 2.5 sticks or 2 1/2 sticks
7. 1 3/5 pounds
8. 12 teaspoons
9. 12.5 or 25/2 I think
260/32.5 = 8.
If 32.5 miles is equivalent to 1 gallon of gas, 260 miles is equivalent to 8 gallons of gas.
(32.5*8 = 260)
We can use substitution to solve for x then substitute the x value back into the original equation to solve for y...
5x + 2y = 7
y = x + 1
Since y = x + 1, we can substitute x + 1 for y in the first equation
5x + 2(x+1) = 7
5x + 2x + 2 = 7
7x + 2 = 7
7x = 5
x = 5/7
Now substitute 5/7 for x in either of the original equations
y = x + 1
y = 5/7 + 1
y = 1 5/7
Solution set is (5/7, 1 5/7)
