Answer:
I am pretty sure it is d, if i am wrong, I am sorry.
Step-by-step explanation:
?
Let x be the amount of Columbian coffee in the mixture and y the amount of Sumatra coffee in the mixture, then
x + y = 1 . . . (1)
9.25x + 14.25y = 12.50 . . . (2)
(1) x 9.25 => 9.25x + 9.25y = 9.25 . . . (3)
(2) - (3) => 5y = 3.25 => y = 3.25/5 = 0.65
From (1), x + 0.65 = 1 => x = 1 - 0.65 = 0.35
1 pound of the mixture contains 0.35 Columbian coffee and 0.65 Sumatra coffee
Therefore, 12 pounds of the mixture will contain 0.35 x 12 = 4.2 pounds of Columbian coffee and 0.65 x 12 = 7.8 pounds of Sumatra coffee
Answer:
2, cause 4/2=2,6/2=3
Step-by-step explanation:
<u>Given:</u><u>-</u><u> </u>
- Height of Cylinder = 21ft.
- Radius of Cylinder = 7ft.
<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u>
<u>Solution</u><u> </u><u>:</u><u>-</u><u> </u>
- Formula for finding surface area of Cylinder = 2πr(r+h)
<u>Putting</u><u> the</u><u> known</u><u> values</u><u> </u><u>,</u><u> </u>
<u>Surface</u><u> Area</u><u> </u><u>=</u><u> </u>2×3.14×7(7+21) ft.²
= <u>1230.88 ft</u>.²