Answer: 17%
Step-by-step explanation:
15.47 over 91 = x over 100
cross multiply and reduce to find 17.
Answer:
13.4±2.132(1.02/5)
Step-by-step explanation:
Khan Academy
(x+b/2a)^2-(b^2-4ac)/2a=0
Step 2:
Re-write the expression:
(x+b/2a)^2=(b^2-4ac)/4a^2
Step 3:
get the square root of both sides:
x+b/2a=sqrt[(b^2-4ac)/4a^2]
Step 4:
Simplifying we get:
x+b/2a=sqrt[b^2-4ac]/2a
Step 5
Make x the subject:
x=-b/2a+/-sqrt[b^2-4ac]/2a
Answer:
It will take 8 seconds.
Step-by-step explanation:
To solve this, you would put it in ratio form (at least, that's what our class did). So 9 quarts of water in 6 seconds would be 9 quarts/6 seconds. You need to find the unit rate after that, so to find that you'd divide 9 by 6. This would give you 1.5 quarts per second.
Now all you need to do is find out what to multiply 1.5 by to be able to get to 12. The number you get will be how many seconds it takes for the hose to emit 12 quarts.
1.5 x <u> </u> = 12
1.5 x <u> 8 </u> = 12
8 is the number of seconds it takes for the hose to emit 12 quarts of water. To write this in ratio form, it would be
<u>12 quarts</u>
8 sec
(it's supposed to be written like a fraction, but there's no way to do that here.) Hope this helped!