Use the commutative and/or associative laws to rewrite the given expression. Label each step with a reason.(y + z) + 9 as (9 + z) + y
What will be an ideal response?
| (y + z) + 9 = 9 + (y + z) | Using the commutative law |
= (9 + z) + y Using the associative law
Mathematics
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Solve.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches, according to the function 
What rainfall produces the maximum number of mosquitoes?
A. 4 in. B. 2 in. C. 0 in. D. 16 in.
Mathematics
Find the GCF for the group of integers.70 and 40
A. 2 B. 1 C. 10 D. 5
Mathematics
Identify the coordinates of each point labeled in the figure. Name the quadrant in which each point lies, or state that the point lies on the x-axis or y-axis.
A. A(4, 6) in quadrant I; B(0, -5) on the y-axis B. A(-4, 6) in quadrant II; B(0, 5) on the x-axis C. A(4, 6) in quadrant I; B(0, 5) on the y-axis D. A(4, -6) in quadrant IV; B(1, -5) in quadrant IV
Mathematics
Solve the proportion.
= 
A. - 
B. 60
C. - 
D. -224
Mathematics