1,430 Answered Questions for the topic Maths

1d

#### Precalc question

A street light is 10 feet above a straight bike path. Olav is bicycling down the path at a rate of 15 MPH. At midnight, Olav is 33 feet from the point on the bike path directly below the street... more

14d

#### Averaging percentages

How do you find the average for 3 percentages?

14d

#### Rank in order (Highest to Lowest) change in operating expenses from year 1 to year 2

Question: Rank in order from highest (1) to lowest (5) in terms of the change in operating expensesKey: m = millionoperating expenses:A - year1=12.8m & year2=9.9mB - year1=25.1m &... more

15d

#### Rank in order (Highest to Lowest) change in operating expenses from year 1 to year 2

Question: Rank in order from highest (1) to lowest (5) in terms of the change in operating expensesKey: m = millionoperating expenses:A - year1=12.8m & year2=9.9mB - year1=25.1m &... more

15d

#### Change in operating expenses from year 1 to year 2

Question: Rank in order from highest (1) to lowest (5) in terms of the change in operating expensesKey: m = millionoperating expenses:A - year1=12.8m & year2=9.9mB - year1=25.1m &... more

16d

#### Prove inequality

1/3 < 1/13+1/15+1/17+...+1/61+1/63 < 4/3

19d

#### The Area of a triangle is 80 cm^2, Perimeter is 8 cm, so what is the length of the radius of the inscribed circle?

Choices:A)5 cmB)10cmC)20cmD)None of these

19d

#### Precalc question

An isosceles triangle has sides of length x, x and y. In addition, assume the triangle has perimeter 12.(a) Find the rule for a function that computes the area of the triangle as a function of x.... more

19d

#### Precalc question

An isosceles triangle has sides of length x, x and y. In addition, assume the triangle has perimeter 12.(a) Find the rule for a function that computes the area of the triangle as a function of x.... more

19d

#### Precalc question

An isosceles triangle has sides of length x, x and y. In addition, assume the triangle has perimeter 12.(a) Find the rule for a function that computes the area of the triangle as a function of x.... more

20d

#### 4,1,-8,_,-20,29,-32,43

What is the missing number?

25d

#### Find the Amplitude Equation

A wave has the following equation:y=0.3(0.7+1.2cos(pi/2))What is it's Amplitude?Is it just 0.3 because that's what I thought?

26d

Express this as a function of a single angle:tan 55°-tan 17°/1+tan 55°tan 17°

26d

#### Express the following as a function of a single angle.

cos(60°)cos(-20°)-sin(60°)sin(-20°)I got sin40. Is that correct?

26d

#### Solve for X Problem

Solve for x where pi/2 ≤ x ≤ 3pi/2.-4 cos^2(x) + 4sqrt(2) sin(x) + 6=0.Enter your answer as a fraction.

26d

#### Find x where 0 ≤ x ≤ 2pi

4sqrt(2) tan x - sqrt(2)= 3sqrt(2) tan xEnter your answers as fractions from smallest to largest.

27d

#### Simplify this Cosine Problem

sin^2x-cos x (cos(-x)) sin^2x

27d

#### Solve this Problem

sin(-x)/cos(x)Solve this problem.

27d

#### Simplify this Sine Problem

cos(pi/2 - x)[sec(pi/2 - x)-cos(pi/2 - x)]

27d

#### Simplify the Problem

cos(pi/2 - x)[sec(pi/2 - x)-cos(pi/2 - x)]

27d

#### Sec Csc Problem

Which expression is not equal to the following: sec^2(x)csc^2(x)A. sec^2(x) + csc^2(x)B. cos^2(x) + sin^2(x)C. sec^2(x) + sec^2(x) cot^2(x)D. (1+ tan^2(x)) csc^2(x)

28d

#### Find the Horizontal Shift

y=-2cos(1/4x- pi/2)Find the horizontal shift of this problem.

28d

#### Graphing Question For Trig

Which of the following points is not on the graph of y= cot x?A. (5pi/6, -sqrt(3))B. (7pi/4, -1)C. (4pi/3, sqrt(3))

29d

#### Cosine Problem for Trig

if y= -cos x, what x-value corresponds to a y-value of 1 between 0 and 2 pi

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