Answer:
132
Step-by-step explanation:
13.15 ounces of 72% acid and 71.85 ounces of 25% acid are needed
<u>Step-by-step explanation:</u>
Total mass of acid required= 85 ounces
Let the mass of 72% acid be 'a'
Let the mass of 25% acid be 'b'
a + b = 85
b = 85-a
85(40/100) = a(72/100) + b(25/100)
85(2/5) = a(72/100) +(85- a) (25/100)
34 = (72a/100) + (2125/100) - (25a/100)
34 - (2125/100) = (72a + 25a) /100
(3400-2125)/100 = 97a /100
97a = 1275
a = 13.15 ounces
b = 85 - 13.14
b = 71.85 ounces
13.15 ounces of 72% acid and 71.85 ounces of 25% acid are needed
Answer:
x=2
PT=7
Step-by-step explanation:
set up the equation like this: PT=TQ
(4x-1)=(2x+3)
calculate to find x
x=2
put x into the equation for PT
4(2)-1=7
Answer:
Step-by-step explanation:
Suppose you draw line AC and calculate the midpoint of AC.
To verify the correctness of your midpoint, you'd find the distance from A to the midpoint, M, as well as the distance from the midpoint, M, to C. If these two distances are equal, then you've found that your midpoint calculation was correct.
Answer:
i dont know... 10.. 20 feet?
Step-by-step explanation:
I did addition and subtraction
