Translate into an equation, then solve.A weatherman reports that since 6:00 am this morning the temperature has dropped by
to the current temperature of
What was the temperature at 6:00 am ?
A. x + 23 = -10; The temperature at 6:00 am was - 13° F.
B. x - 23 = -10; The temperature at 6:00 am was 13° F.
C. x + 23 = -10; The temperature at 6:00 am was 13° F.
D. x - 23 = -10; The temperature at 6:00 am was - 13° F.
Answer: B
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Find the vertex for the parabola whose equation is given.y = x2 + 9x
A. (0, -9)
B. (- , -
)
C. (0, 0)
D. (-9, -81)
Find the mean. Round to the nearest tenth unless otherwise stated.Retirement ages of teachers: 51, 63, 64, 56, 67, 58, 68, 53, 57
A. 59.7 B. 58.4 C. 59 D. 58
Provide an appropriate response.If a ? b, is it always true that a2 ? b2? Explain.
What will be an ideal response?
Find the square root. Assume that all variables represent positive real numbers.-
A. not a real number B. -17 C. -144 D. 17