Solve by the substitution method.x + y = -1y = x - 8
A. Infinitely many solutions
B. (0, -9)
C. No solution
D. (-1, -8)
Answer: C
Mathematics
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Calculate.-23 - (-53)
A. 30 B. -30 C. 76 D. -76
Mathematics
Use the product rule to simplify the expression. Write the answer in exponential form.76 ? 72
A. 78 B. 712 C. 498 D. 4912
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Solve. Use ? ? 3.14 and round to the nearest hundredth.A water sprinkler sends water out in a circular pattern. The radius of watering is 5 feet. Determine how large an area is watered.
A. 7.85 ft2 B. 19.63 ft2 C. 78.5 ft2 D. 15.7 ft2
Mathematics
Use the discriminant to determine the number of real solutions of the equation. x² - 5.79x + 2.37 = 0
(a) no real solutions (b) exactly one real solution (c) two real solutions (d) more than two real solutions (e) none of these
Mathematics