Add or subtract.
- 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Provide an appropriate response.In extreme temperatures, concrete can experience a ±1.2% change in length after it is laid. Considering this, if 20 ft sections of concrete are laid for a bridge during cold weather, what width of expansion joint must be allowed so that the bridge will not buckle in hot weather? Round your answer to the nearest hundredth of a foot.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Combine the following, if possible.6
+ x
A. 7x5 B. 6x5 C. 6x9 D. 6x5 + x4
Mathematics
Graph the function.f(x) = x
A. 
B. 
C. 
D. 
Mathematics
Graph the equation.y = 
- 2
A. 
B. 
C. 
D. 
Mathematics