Determine the equation of the line described. Put the answer in the slope-intercept form, if possible.Through (9, -8), perpendicular to x = -1
A. y = 8
B. y = -1
C. x = -1
D. y = -8
Answer: D
Mathematics
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Find the indicated measure of central tendency.The speeds (in mph) of the cars passing a certain checkpoint are measured by radar. The results are shown below. Find the midrange.44.2?41.0?43.0?40.9?43.040.4?44.7?41.5?44.2?42.844.0?41.5?40.9?44.0?41.0
A. 42.8 B. 4.30 C. 42.30 D. 42.55
Mathematics
Simplify the expression.
A. cos3 ? B. tan2 ? C. sin ? D. sec2 ?
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Write the expression in the standard form a + bi.4i(3 - 4i)
A. 16+ 12i B. 12i- 16 C. 12i + 16i2 D. 12i - 16i2
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State whether the parabola opens upward or downward.y = -x2 - 10
A. Upward B. Downward
Mathematics