Answer:
(D). 6.
Step-by-step explanation:
The number of parts = 1 + 10 = 11.
So 10/11 of the alloy is copper and 1/11 is aluminium.
So the answer is 1/11 * 66
= 66/11= 6 pound,s
Answer:
7
Step-by-step explanation:
Answer:
x = 6
Step-by-step explanation:
<u>Calculations:</u>
2(x + 4) = 20 (Distribute)
2x + 8 = 20 (Subtract 8 from both sides)
2x = 12 (Divide by 2 from both sides)
x = 6
<u>Verify:</u>
2(10) = 20 (Correct)
I believe it is 3. since it touches the x-axis in three areas