Answer:
61.25%
Step-by-step explanation:
How many ml of 20 percent acid should be added to pure acid
to make 70 ml of 30 percent acid?
:
let x = amt of 20% mixture
then
(70-x) = amt of pure acid
:
0.20x + (70-x) =0 .30(70)
0.20x + 70 - x = 21
= 21 - 70
-0.8x =-49
x = 61.25%
x = +61.25 ml of 20% stuff
- 90, 50 , 40
And
60, 50, 70
Next to angle x is 102° and is you add 102 to angle x it has to equal 180 because that’s the value of half the circle so you do 180-102 which will give you 78
lo puse en mi calculadora esperaba que esto ayudara
Answer:
salary=120000
1/4×120000=30000= money spent
remainder=120000- 30000
= 90000
money spent on clothing =1/2×90000
=45000
