10 quarts of 20 % salt solution mixed with 5 quarts of 80 % salt solution to make 15 quarts of 40 % salt solution
<em><u>Solution:</u></em>
The final mixture is 15 quarts
Let amount of 20% solution to be mixed, be x
Then, the amount of 80 % solution to be mixed is 15 - x
Thus, we can say,
"x" quarts of 20 % salt solution mixed with (15 - x) quarts of 80 % salt solution to make 15 quarts of 40 % salt solution
thus, we frame a equation as,
Thus 10 quarts of 20 % solution is mixed
Then, 15 - x = 15 - 10 = 5
5 quarts of 80 % salt solution is mixed
Andrew must get a 74 for his average to be at 70 percent. you can plug and chug in your calculator or use an equation like this one (64+69+73+x)/4=70 ; solve for x and your number should be 74
-2(3)^2+3+3
-2(9)+6
-18+6
=-12
Answer: Emma’s mean is 189. Devins mean is 186.
Step-by-step explanation:
Emma: 147+143+181+232+193+207+205+221+172= 1701. 1701 divided by nine: 189.
Devin: 185+186+194+197+198+155+194+163+202= 1674 divided by nine: 186.
Coach should choose Emma.
Hope i helped have an awesome Friday!
<h2><u>
PLEASE MARK BRAINLIEST!</u></h2>
Answer:
Sorry I'm late!
Step-by-step explanation:
<em>Formula ⇒ </em>
<h3>The Area of the face of the triangle is 17.5 in²</h3>
I hope this helps!
- sincerelynini