Factor by grouping.2s2 + 10s - as - 5a
A. (s - a)(2s + 5)
B. (s + 2)(5s - a)
C. (s - 5)(2s + a)
D. (s + 5)(2s - a)
Answer: D
Mathematics
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Find the foci of the ellipse whose equation is given. +
= 1
A. foci at (- , -1) and (
, -1)
B. foci at (1 + , 1) and (1 -
, 1)
C. foci at (-1 + , 1) and (-1 -
, 1)
D. foci at (1 + , -1) and (1 -
, -1)
Mathematics
Remove or add parentheses as indicated.Place parentheses to make the equation true.
A. None needed. B. a ? (b ÷ b + 5b) = a + 5b C. (a ? b) ÷ (b + 5b) = a + 5b D. a ? b ÷ (b + 5b) = a + 5b
Mathematics
Solve the problem.A game involves choosing 7 numbers from the numbers 1 through 13. In how many ways can this be done?
A. 1724 B. 8,648,640 C. 1696 D. 1716
Mathematics
Provide an appropriate response.Explain why ? A when A is negative.
What will be an ideal response?
Mathematics