31 Answered Questions for the topic Precal

07/19/21

4. A motor is spinning a circular disk with a diameter of 2.5 inches at a rate of 7200 RPM (revolutions per minute). If the motor and disk suddenly stop spinning at exactly 0.01 seconds, what the... more

07/13/21

#### A ferris wheel is 40 meters in diameter and boarded from a platform that is 1 meters above the ground.

A ferris wheel is 40 meters in diameter and boarded from a platform that is 1 meters above the ground. The six o'clock position on the ferris wheel is level with the loading platform. The wheel... more
Precal Trig Calc

11/23/20

#### 7.1 8 Find the area of the triangle if a=9inches, b=7inches, and α=34°. Round to the nearest tenth.

Find the area of the triangle if a=9inches, b=7inches, and α=34°. Round to the nearest tenth.

11/18/20

#### (Can someone show me step by step?)The population of a small town is increasing at a continuous growth rate of 3.29 % per year. In 2018 the population was 15,000.

Part A: If t is the number of years since 2018 and f(t) is the population, write a continuous exponential growth function expressing the relationship between f(t) and t.PART B: Predict the year... more

01/13/20

#### [4 Questions] Pre-cal Asymptotes (NEED HELP)

https://imgur.com/a/5h6rxZvHow do I do these? Asymptotes confuse me, if anyone could help me I would greatly appreciate it.(I need to find the domain, vertical, and horizontal Asymptotes)

03/29/19

#### Solve the equation. Cos^2θ-sin^2θ=1+sinθ on the interval 0<θ<2π

Please help! This is for my precal class test review and I’ve been trying to solve it for an hour now and can’t seem to figure out how to do it. Here is the problem once again: cos2θ-sin2θ=1+sinθ... more

10/08/18

#### Determine the type of conics each equation represents using the discriminant.

1. 2x2-4xy+8y2+7=02. 2xy-x+y-3=03.x2-y2+4=0

09/10/18

Precal

06/22/18

#### Need help with a growth problem

Immediately following an injection, the concentration of a drug in the bloodstream is 200 milligrams per milliliter. After t hours, the concentration is 75% of the level of the previous... more
Precal Precalculus

03/28/18

#### PreCalculus Questions

Given u = -10i + 6j and v = -8i + -j, find the angle between u and v.

01/31/18

#### Degree 3; zeros; -8 , 5- i

Information is given about a polynomial f(x) whoae coeffiecients are real numbers
Precal

01/27/18

#### what is csc(90° − θ) if cos(θ) = 1/ 4

trigometric identities
Precal

11/30/17

#### Heather is trying to decide what classes to take next year.

Heather is trying to decide what classes to take next year. She must take one of each and can choose from 3 math classes, 2 science classes, 4 history classes, and 3 English classes. How many... more
Precal

11/13/17

#### A car travels 10 miles. Its tires make 8800 revolutions. What is the radius of a tire in inches?

precal, answer must be in inches
Precal

08/27/17

02/14/17

#### PRECALCULUS HELP: inverse of a equation

The functionf(x) = −12 x^2 + 6x + 5is not invertible, however the domain can be restricted so that the function is invertible only on the restricted domain. There are many ways to do this. One way... more
Precal

09/19/16

#### How much more would the account have been worth if the interest were compounding weekly?

An account is opened with an initial deposit of \$6,500 and earns 3.3% interest compounded semi-annually for 30 years. How much more would the account have been worth if the interest were... more

02/09/16

#### Find sin(x) and cos(x), if cot(x)=8 and csc(x)<0

I have a few more questions about stuff like this, but all my questions are going on here separately. I think I'm STARTING to understand this stuff a little better. I just can't figure out how to... more
Precal

12/06/15

#### square root of 3 sin(theta) +cos (theta) = 1

The answer is between 0 < or equal to theta< 2pi
Precal

12/06/15

#### Find sin(a+b) if tan(a)= 7/24 where a is in the 3rd quadrant and cos(b)= -12/13 where b is in the 2nd quadrant

I could really use some assistance on this problem! I'm a little confused on how to work it.

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