math b

Which equation is equivalent to logx(36)=2? : x2=36

What is the value of mc005-1.jpg? : -2

A Cepheid star is a type of variable star, which means its brightness is not constant. The relationship between the brightness of a Cepheid star and its period, or length of its pulse, is given by M = -2.78(log P) - 1.35, where M is the absolute magnitude, or brightness, of the star, and P is the number of days required for the star to complete one cycle. What is the absolute magnitude of a star that has a period of 45 days? Use a calculator. Round your answer to the nearest hundredth. : -5.95

Which expression can be used to approximate the expression below, for all positive numbers a, b, and x, where a mc001-1.jpg 1 and b mc001-2.jpg 1?loga(x) : logb(x)/logb(a)

Angle D has a measure between 0 and 360 and is coterminal with a -920° angle. What is the measure of angle D? : 160°

An angle whose measure is 92° is in standard position. In which quadrant does the terminal side of the angle fall? : Quadrant II

What is 5pi/6 radians converted to degrees? If necessary, round your answer to the nearest degree. : 150°

A circle has a central angle of 6 radians that intersects an arc of length 14 in. Which equation finds the length of the radius, r, of the circle? : r=14/6

What is the approximate degree measure of angle A in the triangle below?mc007-1.jpg : 37.9

In a right triangle, cosa=0.352 and sina=0.936. What is the approximate value of tana? : 2.659

What are the values of m and mc012-1.jpg in the diagram below?mc012-2.jpg : m=sq root3/20=pi/6

The terminal side of an angle measuring pi/6 radians intersects the unit circle at what point? : (sq root3/2, 1/2

Which of the following best explains why cos2pi/3 dont equal cos5pi/3? : Cosine is negative in the second quadrant and positive in the fourth quadrant.

Which values for mc017-1.jpg have the same reference angles? : pi/4,3pi/4,7pi/4

Given that tan0=-1, what is the value of sec0, for 3pi/2<0<2pi? : sq root 2

The point P(x, y) lies on the terminal side of an angle mc014-1.jpg = -60° in standard position. What are the signs of the values of x and y? : x is positive, and y is negative.

Which function is graphed below?mc001-1.jpg : f(x) = sin(x)

Which function is graphed below?mc002-1.jpg : f(x) = cos(x)

Which of the following is true for f(x) = 5cos(x) +1? : The range of the function is the set of real numbers mc018-3.jpg.

What is the domain of f(x) = cos(x)? : the set of all real numbers

Six times a number is greater than 20 more than that number. What are the possible values of that number? : n>4

Which graph shows the solution set of the inequality 2.9(x+8)<26.1 : open circle starting at 1<------

Kalon has $175 and needs to save at least $700 for a new computer. If he can save $35 per week, what is the minimum number of weeks Kalon will need to save to reach his goal? : 15 weeks

Which equation is equivalent to 4s=t+2 : s=t+2/4

Gavin wrote the equation mc004-1.jpg to represent p, the profit he makes from s sales in his lawn-mowing business. Which equation is solved for s? : s=4p-300/3

Which of the following equations is equivalent to s=pir^2h : h=s/pir^2

If f(x)=sq rt(x)+12 and g(x)=2 sq rt2, what is the value of (f - g)(144)? : 0

If f(x) = 16x - 30 and g(x) = 14x - 6, for which value of x does (f - g)(x) = 0? : 12

If u(x)=-2x^2+3 and v(x)=1/x, what is the range of (u*v)(x)? : (-infinty,3)

If f(x) = x2 + 1 and g(x) = x - 4, which value is equivalent to (f*g)(10)? : 37

If g(x)=(x+1)/(x-) and h(x) = 4 - x, what is the value of (g*h)(-3)? : 8/5

If s(x) = x - 7 and t(x) = 4x2 - x + 3, which expression is equivalent to (t*s)(x)? : 4(x - 7)2 - (x - 7) + 3