477 Answered Questions for the topic Pre-Calculus

09/14/19

#### Does the following statement make sense?

My Pre-Cal professor asked my class if the following statement made sense mathematically:"My body temperature is a function of my age."We were assigned to explain why or why not this statement made... more

09/13/19

#### What acute angle (theta) satisfies the equation sin(theta) = cos (2(theta) + 60degrees)?

find an acute angle (theta) that satisfies the equation sin(theta) = cos (2(theta) + 60°)

09/12/19

#### what is (4+3i)^4

I got -527+336i but I can't figure out how to get that answer.

09/11/19

#### Find 2 functions f and g such that h(x)=[fog](x).

Neither function may be the identity function f(x)=x.h(x)=√(4x+2) +7Can someone give me a step by step explanation because it is kind of confusing and complex to understand, thank you

08/29/19

Suppose that the revenue​ R, in​ dollars, from selling x cell​ phones, in​ hundreds, is R(x)=-1.2x^2+246x The cost​ C, in​ dollars, from selling x cell​ phones, in​ hundreds, C(x)-0.07x^3... more

08/29/19

if f(x)= 4x^3+Ax^2+7x-3 and f(2)=1, what is the value of A?

08/16/19

#### What is the polynomial function of least degree whose only zeros are −2 , 3, and 4?

f(x)=x^3(blank)x^2(blank)x(blank)

08/03/19

1.Kevin's hydro-electric company charges a 1.7% late fee on an overdue balance. The company charged him $0.76 for an overdue balance. What was the balance on which this fee was based? A)$26.84 ... more

07/25/19

#### Pre-Calculus. .

The radioactive element​ carbon-14 has a​ half-life of 5750 years. A scientist determined that the bones from a mastodon had lost 59.7% of their​ carbon-14. How old were the bones at the time they... more

07/20/19

#### Apple And Pie Question

Apple and Pie stand near the foot of a tall mountain and measure their angles of elevation to the summit of the mountain T. Apple stands at point A and measures 37°. Pie stands at point P and... more

07/18/19

#### still not getting it

You are given that sin(A)=−7/25, with A in Quadrant IV, and sin(B)=−12/13, with B in Quadrant III. Find cos(A+B). Give your answer as a fraction.

07/04/19

#### Pre-Calculus: Circle

It has a diameter with endpoints A(-1,4) and B(4,2)

06/26/19

#### Absolute value function as a piecewise function

Hello, I am a former ninth grader currently taking pre-calculus over the course of the summer. I'm am doing an honors assignment. The assignment involves the function f(x)=|x|. She wants my to... more

06/21/19

06/20/19

f(x)=x^2 / x^2−4

04/30/19

04/18/19

#### Systems of equations

Here's the question. The dimensions of the rectangular foundation of a house is represented by the expressions (x+5) and (x-4). The area of the foundation can be represented by y+20 and the... more

04/10/19

#### What are the length of the Adjacent sides? Optimization

A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $50/ft and on the other three sides by a metal fence costing$40/ft. If the area of the garden is 82... more

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