Answer:
h) (3 - 2b)/4b²
k) (2b - 3a)/ab³
Step-by-step explanation:
h) 3/4b² - 1/2b
multiply 1/2b, both top and bottom, by 2b, so 1/2b = 2b/4b²:
3/4b² - 2b/4b² = (3 - 2b)/4b²
k) 2/ab² - 3/b³
multiply 2/ab², both top and bottom, by b, so 2/ab² = 2b/ab³:
multiply 3/b³, both top and bottom, by a, so 3/b³ = 3a/ab³:
2b/ab³ - 3a/ab³ = (2b - 3a)/ab³
Answer:
$16
Step-by-step explanation:
This method is probbaly working backwards. I'm not sure.
12 - 4 = 8 (How much she was left with if she didn't wash the car for 4 dollars)
8 x 2 = 16 (They mentioned she spent half of her weekly allowance)
When you are given an equation or an expression and told the values for the variables, you can just substitute them into the equation to solve:
8b^2 - 5m + 12
8(6)^2 - 5(8) + 12
8(36) - 40 + 12
288 - 40 + 12
248 + 12
260
Answer:
260
Hope this helps!
Answer:
b
Step-by-step explanation:
