38 Answered Questions for the topic Pre Cal

Pre Cal

08/20/18

Determine the domain for the function. f(x)= square root x+3 over (x+8)(x-2)

 please help me asap :)
Pre Cal

07/28/18

If COS theta = 2/3 what are all the possible angles

I need to know all the possible angles if cos theta = 2/3  
Pre Cal

03/21/18

How do I solve -3B -[-4 2 3] = [-2 -32 -9]

Hdbjd fud fi dud dood f  
Pre Cal Pre Calculus

01/19/18

An architectural engineer is designing a parabolic dome that will be 200 feet in diameter with a maximum height of 50 feet

Find the equation of the cross sectional parábola of the dome
Pre Cal

01/17/18

F(×)= mx, then f(a +b) = f(a)+f(b) for all a an b

1 True 2 false 3not enough information  or 4 none need steps please 
Pre Cal

01/17/18

True/false If f is a linear function then f(r+s)= f(r)+f(s)

True false not enough information . Need steps please
Pre Cal

10/30/17

interest rate question

Suppose one bank account pays 7% annual interest compounded once per year, and a second bank account pays 7% annual interest compounded continuously. If both bank accounts start with the same... more
Pre Cal Math

10/27/17

Find all real numbers θ in [0, 2π] such that sec θ = −2.

I am not sure how to solve this problem even when looking at it's graph.

10/08/17

Is C=2pi(r) a power function?

Is C=2Πr an example of a power function? If so can you state the power and constant of variation, and state it in the form of f(x)=k*x^a?
Pre Cal Pre Calculus

09/28/17

F(x)=x^2+9 find the value of the function

I really want to understand what I am doing during class
Pre Cal

08/16/17

Word Problem

Roger can run one mile in 8 minutes. Jeff can run one mile in 6 minutes. If Jeff gives Roger a 1 minute head start, how long will it take before Jeff catches up to Roger? How far will each have run?
Pre Cal

08/16/17

Word Problem

A motorboat can maintain a constant speed of 40 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 33 minutes; the return trip takes 22 minutes. What is the... more
Pre Cal

08/16/17

Word Problem

How many gallons of a90% antifreeze solution must be mixed with 6060 gallons of 20% antifreeze to get a mixture that is 80% antifreeze? Use the six-step method.
Pre Cal

08/16/17

Word Problem

How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 95% antifreeze?
Pre Cal

08/16/17

Word Problem

.7.23 Question Help The manager of a store that specializes in selling tea decides to experiment with a new blend. She will mix some Earl Grey tea that sells for $5 per pound with some Orange Pekoe... more
Pre Cal

07/29/17

Complete the general form of the equation using rectangular coordinates

Write the given equation using rectangular coordinates (X,Y) r= (3)/(1-cos theta) 0=? 
Pre Cal

07/20/17

((Sin pheta+ cos pheta)/(sin pheta))-((cos pheta-sin pheta)/(cos pheta))

Rewrite over a common denominator. write your answer in terms of sine/or cosine.  
Pre Cal

07/20/17

(Cot a+ Csc B)/(tan a+ sinB) = cot a Csc B

use the receprocal identities to write the trignkmetric functions in the denominator of the left side. add the fraction in the denominator of the previous step...(left side) the fraction from... more
Pre Cal

07/20/17

(Cos theta) / (cos theta -sin theta)= (1/1-tan theta)

establish the identity. write the left side as an equivalent expression with 1 in the numerator 
Pre Cal

05/17/17

solve the trangle. round answer to nearest tenth

CB= 34 m AB= 20 m  a=127 degrees
Pre Cal

05/17/17

find direction angle of t

t= (-5,-5)

12/19/16

amber worked 15 hours more than chance last month. If amber worked 6 hours for every 3 hour that chance worked how many hors did th each work

amber worked 15 hours more than chance last month. If amber worked 6 hours for every 3 hour that chance worked how many hors did th each work
Pre Cal

12/08/16

A piece of wire 10 m long is to be cut into two pieces.

A piece of wire 10 m long is to be cut into two pieces. One piece is to be bentinto a square and the other is to be bent into a circle. How should the wire be cut sothat the total area enclosed is... more
Pre Cal

12/04/16

what is the minimum possible product of two numbers whose difference is 44?

 what is the minimum possible product of two numbers whose difference is 44?

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