Match the equation to the graph.x2 = -13y

A.

B.

C.

D.


Answer: D

Mathematics

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Evaluate the requested trigonometric function using the information given. sec ? = ; 3?/2 < ? < 2?Find sin ?.

A. - 
B. - 
C. - 
D.

Mathematics

Find the approximate equation of the line that has the given slope and contains the given point. Write the equation in slope-intercept form. Round the constant term to two decimal places if necessary.m = -3.5, (-4.4, 7.4)

A. y = -3.5x + 22.8 B. y = -0.29x + 6.14 C. y = -3.5x - 8 D. y = 3.5x - 8

Mathematics

The loudness L(x), measured in decibels, of a sound of intensity x, measured in watts per square meter, is defined as  watt per square meter is the least intense sound that a human ear can detect. Determine the loudness, in decibels, of the sound.At a recent Phish rock concert, sound intensity reached a level of 0.50 watt per square meter. To the nearest whole number, calculate the loudness of this sound in decibels.

A. 117 decibels B. 107 decibels C. 112 decibels D. 123 decibels

Mathematics

Find the component form of v if  and the angle it makes with the x-axis is 60°.

A. ?
B. ?
C.
D. ?
E. ?

Mathematics