Answer:
17.5
Step-by-step explanation:
11 + 24 = 35 /2
The number of pounds of copper in 120 pounds of brass is = 78 pounds of copper
<h3>Calculation of number of pounds of copper</h3>
The percentage of copper in the brass = 65%
Therefore the quantity of copper in the brass = 65/100= 0.65 pounds
This means that 1 pound brass contains = 0.65 pounds of copper
The quantity of copper in 120 pounds of brass = 120 * 0.65
= 78 pounds of copper.
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Answer:
-4(8x-4)+3x = -29x+16
Step-by-step explanation:
1. Simplify -4(8x-4) by using the distribution property:
<u>-4(8x) = -32x and -4(-4) = 16 so -4(8x-4) = -32x+16</u>
2. Add 3x to the remaining equation:
<u>-32x+16+3x = -29x+16 </u>
3. The answer is:
<u> -29x+16 </u>
a. The speed is represented by 7 miles an hour
b. f(t)=7t
c. 28 miles
