Let a?, a?, a?, . . , an, . . . be an arithmetic sequence with a? = 8 and a?? = –70. Find S??.
What will be an ideal response?
–1,240
Mathematics
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Decide whether the problem is an equation or an expression.
= 
- 3
A. Expression B. Equation
Mathematics
Solve and check your solution.5a = -10
A. -2 B. 15 C. 1 D. -15
Mathematics
Find the perimeter.The local park district acquired lands to be used for a new dog park. How many yards of fencing are needed to enclose the dog park?
A. 391 yd B. 301 yd C. 371 yd D. 446 yd
Mathematics
Solve the quadratic equation. x2 = 7 - 4x
A. {2 + 
}
B. {-2 ± 
}
C. {-1 ± 
}
D. {-2 ± 2
}
Mathematics