Choose the best answer.A nail is about how long?
A. 31 cm
B. 31 km
C. 31 mm
D. 31 m
Answer: C
Mathematics
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Graph the quadratic equation. Identify the vertex and the intercept points with their coordinates.y = x2 - 9
A. vertex: (0, -9)
x-intercepts: (-3, 0) and (3, 0)
y-intercept: (0, -9)
B. vertex: (0, 9)
x-intercepts: none
y-intercept: (0, 9)
C. vertex: (0, -9)
x-intercepts: none
y-intercept: (0, -9)
D. vertex: (-9, 0)
x-intercept: (-9, 0)
y-intercept: (0, 81)
Mathematics
For the piecewise function, find the specified function value.f(x) = {
f(-9)
A. 37 B. -81 C. -35 D. 54
Mathematics
Write the algebraic expression without parentheses.-(7x - 7)
A. -7x - 7 B. -7x + 7 C. 49x D. 7x - 7
Mathematics
Divide.25.2 ÷ 30
A. 0.81 B. 0.89 C. 1.24 D. 0.84
Mathematics