15,254 Answered Questions for the topic precalculus

Precalculus Math Science Homeschool

04/21/23

Algebra 1, round trip
Jed rode his scooter at 20 miles per hour and then jogged back at 8 miles per hour. If the round trip took him 7 hours, how far was it to school?
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Precalculus Algebra 2

04/21/23

How much was invested in each vehicle?
Country Day's scholarship fund receives a gift of $ 160000. The money is invested in stocks, bonds, and CDs. CDs pay 2.25 % interest, bonds pay 4.4 % interest, and stocks pay 9.3 % interest.... more
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Precalculus

04/20/23

pre calc question
A car was valued at $28,000 in the year 1993. The value depreciated to $10,000 by the year 2003.A) What was the annual rate of change between 1993 and 2003? r =  Round the rate of decrease to 4... more
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Precalculus

04/20/23

Standard form of equation

What is the standard form of the equation of the parabola with the given characteristics? Vertex: (-1, 2)Focus: (-1, 0)
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Precalculus

04/19/23

pre calc question
A house was valued at $110,000 in the year 1987. The value appreciated to $170,000 by the year 2007.A) What was the annual growth rate between 1987 and 2007?r =  Round the growth rate to 4 decimal... more
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Precalculus

04/19/23

pre calc question
A bank features a savings account that has an annual percentage rate of r=3.2% with interest compounded quarterly. Pilar deposits $11,000 into the account. The account balance can be modeled by the... more
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Precalculus

04/19/23

pre calc question
A savings account pays interest at a annual percentage rate (APR) of 2.6%, compounded weekly. Find the annual percentage yield (APY) for this account.Give your answer as a percentage, rounded to... more
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Precalculus

04/19/23

pre calc question
A savings account pays interest at a annual percentage rate (APR) of 2.9%, compounded weekly. Find the annual percentage yield (APY) for this account.Give your answer as a percentage, rounded to... more
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Precalculus

04/19/23

pre calc question
If 4000 dollars is invested in a bank account at an interest rate of 6 per cent per year,Find the amount in the bank after 6 years if interest is compounded annually:    Find the amount in the bank... more
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Precalculus Trigonometry

04/19/23

QUICK HELP??????
Rewrite the following equation and polar form x^2+(y-5)^2=25 show work .your final answer should be r=
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Precalculus Trigonometry

04/19/23

Quick help ??????????????
Convert the polar form of the complex number into rectangular formz=3squrt2cis7pi/4 show work show how you separately convert r and Thea into a and b
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Precalculus

04/19/23

PRECALCULUS HELP
Suppose that sec α= −5/3 and π/2 < α < π.Find the exact values of cos α/2 and tan α/2.  cos α/2 = tan α/2 =
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Precalculus

04/18/23

Arc Length Formula
A 70 foot tall tree r feet from an observer subtends an angle of 1.75 degrees. Use the arc length formula to estimate r (the distance between the observer and the tree) to the nearest foot.
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Precalculus

04/18/23

How to use the arc length formula

A tower 1,600 yards from an observer subtends an angle of 2 degrees. Use the arc length formula to estimate the height of the tower
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Precalculus

04/18/23

If sin x=1/3, x in quadrant 1, then find (without finding x)
Sin (2x)=?Cos (2x)=?Tan (2x)=?How would I solve this equation? If possible, please explain how you solved it.
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Precalculus

04/17/23

pre calc question 10
A car was valued at $25,000 in the year 1992. The value depreciated to $10,000 by the year 2001.A) What was the annual rate of change between 1992 and 2001? r =  Round the rate of decrease to 4... more
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Precalculus

04/17/23

pre calc question 9
A house was valued at $105,000 in the year 1994. The value appreciated to $165,000 by the year 2006.A) What was the annual growth rate between 1994 and 2006?r =  Round the growth rate to 4 decimal... more
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Precalculus

04/17/23

pre calc question 8
Find a formula for the exponential function passing through the points (-3,3/64) and (2,48)f(x) =   
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Precalculus

04/17/23

pre all question6
An exponential function f(x)=a⋅bx passes through the points (0, 5) and (2, 125). What are the values of aand b?a =  and b =
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Precalculus

04/17/23

Precalculus question 5
A vehicle purchased for $22,400 depreciates at a constant rate of 8%. Determine the approximate value of the vehicle 13 years after purchase. Round to the nearest whole dollar.
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Precalculus

04/17/23

pre calc quesiton4

The fox population in a certain region has an annual growth rate of 4 percent per year. It is estimated that the population in the year 2000 was 6600.(a) Find a function that models the... more
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Precalculus

04/17/23

pre calc question 3
A population numbers 15,000 organisms initially and decreases by 3.6% each year.Suppose P represents population, and t the number of years of growth. An exponential model for the population can be... more
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Precalculus

04/17/23

pre calc question 2
A population numbers 13,000 organisms initially and grows by 8.8% each year.Suppose P represents population, and t the number of years of growth. An exponential model for the population can be... more
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Precalculus Calculus Trigonometry

04/17/23

Use the fundamental identities to fully simplify the expression.
cot(x) cos(x) + csc(x) sin2(x)
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Precalculus

04/16/23

Write as a single logarithm:

6 log5(x) − log1/5(y) + 5
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