Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)
Answer:
1.
2.
Step-by-step explanation:
One equation is already given in the statement which can give the result.
Lets assume the area of painting = d = 10 sq inch
Now following expressions will give the same answer.
1.
2. Multiplying the percentage d, As the area increases by 49 % which means that D is multiplied by increased amount of 49%
equation will be
3. Calculating the percentage increment = 1/1.49=0.67
Now dividing this value with d will give the same area.
Answer:
35
Step-by-step explanation:
because she charges 5$ an hour and 7x5 is 35
Idk what you're trying to say for the first question, but the second one is B: x = 7
Let be the number of liters of the 10% solution she needs to use. She'd end up with a 6% solution with a volume of liters. The starting solution contains 0.04*9 = 0.36 liter of salt. Each liter of the 10% solution contributes 0.1 liter of salt, so that
Solve for :
so Mayra needs to add 4.5 liters of the 10% solution.