Answer:
- 6 2/3 qt 80%
- 13 1/3 qt 20%
Step-by-step explanation:
It is often convenient to solve a mixture problem by letting a variable represent the quantity of the higher-concentration contributor to the mix.
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We can let x represent the number of quarts of 80% solution needed. Then (20-x) is the number of quarts of 20% solution needed. The amount of salt in the final mix is ...
0.80x +0.20(20-x) = 0.40(20)
0.60x = 0.20(20) . . . . . . . . subtract 0.20(20) and simplify
x = 20/3 = 6 2/3 . . . . . . . . . divide by 0.60; quarts of 80% solution
(20 -x) = 13 1/3 . . . . . . . . . . amount of 20% solution needed
The teacher should mix 6 2/3 quarts of 80% solution with 13 1/3 quarts of 20% solution.
The square's diagonal is the triangle's hypotenuse.
the original Pythagorean theorem is
where
a and
b are the two sides and
c is the hypotenuse.
that means the Pythagorean theorem for this question is:
or
Yes because 9 is bigger than 0.
Answer:
The answer is five
Step-by-step explanation:
Please follow me
I'm new hear
Answer:
In 75 minutes, they will chime in together.
Step-by-step explanation:
First clock- 15, 30, 45, 60, 75
Second clock- 25, 50, 75
