Answer:
y is 6.5 because it's kind of a ratio, you just need to find out what number to divide them by or multiply them by in this case, it was 13÷2 =6.5
·_21.21
25l546. 25 goes into 54 twice with a remainder of 4
l50↓
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l 46 25 goes into 46 once with 21 left
l 25
------
21
(5*180)/7=900/7=128.5714285714286
The angle is approximately 129 degrees.
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The asnwer would be 768 cm^3<span />
True
1/2 (up the hill) - 1/2 (down the hill) = 0