Answer:she dosnt have enough
Step-by-step explanation:bored
Answer:
500 lb
Step-by-step explanation:
Let x lb be the weight of seawater needed to get 17.5 lb of salt.
Now,
x lb - 100%
17.5 lb - 3.5%
Write a proportion:
Cross multiply:
Answer:
answer is 2x / 8.
a number = x
quotient = division of 8
times = multiplication
hope this helps, i also hated my algebraic expressions unit haha
Let x be the amount invested at 7%, leaving 30000-x to be invested at 9%.
The equation is
2320 = 0.07 x + 0.09 (30000 - x)
2320 = -0.02 x + .09(30000)
0.02 x = .09(30000) - 2320
x = ( .09(30000) - 2320) / .02
x = 19000
Answer: $19000 at 7%, $11000 at 9%
Check:
19000(.07)+11000(.09) = 2320, good
Answer:
c. 7.6 > 7.575
Step-by-step explanation
The ones place is the same, so you move onto the digit in the next place. 6 is more than 5 so 7.6 is greater and that's what it says.
You can apply this to the rest and see they are all untrue, remember, when it's negative the smaller digit means it's greater