Answer:
45%
Step-by-step explanation:
Answer:
61.93
Step-by-step explanation:
use cosine x= 8/17
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
Answer:
<h3>4.c</h3><h3>5.a</h3>
Step-by-step explanation:
<h3>#CARRY ON LEARNING</h3><h3>#MARK BRAINLITS</h3>
Answer:
3 = 92 degree 4 = 88 degree
Step-by-step explanation:
3 = 45 + 47 = 92 degree
4 = 180 - 92 = 88 degree
