Answer:
18 quarters = $4.50
8.00-4.50=3.50
10 dimes+10 quarters=$3.50
Answer= you have 10 dimes and 28 quarters
Step-by-step explanation:
Answer:
Step-by-step explanation:
26% is (26-20)/(50-20) = 6/30 = 1/5 of the way between 20% and 50%. That means 1/5 of the solution is 50% acid.
50% acid: 1/5 · 100 mL = 20 mL
20% acid: 100 mL -20 mL = 80 mL
Delbert must mix 80 mL of 20% acid and 20 mL of 50% acid.
_____
Maybe you'd like to see an equation. Let x represent the amount of 50% acid required. Then 100-x is the amount of 20% acid needed. The amount of acid in the mix is ...
0.50(x) +0.20(100 -x) = 0.26(100)
(0.50 -0.20)x = (0.26 -0.20)100 . . . . subtract 0.20(100)
x = (0.26 -0.20)/(0.50 -0.20)×100 = 20
This last expression should look a lot like the one we started with in this answer. It shows you how you can almost write down the answer to mixture problems without a lot of work.
{If this is a biology question}
The bottleneck effect can be explained by the cheetah population. Cheetah's used to be unique and many before they were hunted. Their population dropped so low, breeding produced almost exact 'clones'. The bottleneck effect is when genetic diversity is lost.
Answer:
<h2>B) 0</h2>
Step-by-step explanation:
The slope of a horizontal line is equal to 0.
The slope of a vertical line is undefined.
The formula of a slope:
Put the coordinates of the pojnts from the graph (2, 9) and (4, 9):
