15,254 Answered Questions for the topic precalculus

Precalculus

04/28/23

pre calc question
A savings account pays interest at a annual percentage rate (APR) of 2.1%, compounded daily.A customer opens a savings account with an initial deposit of $2000. Assuming no further deposits or... more
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Precalculus

04/28/23

precalc question
At the beginning of a laboratory experiment, a technician observes 16 CFUs (colony-forming units) of a certain bacterium in a culture. After 4.2 hours, there are 44280 CFUs in the culture. Assuming... more
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Precalculus

04/28/23

pre calc question
at the beginning of 2020, the population of Sylvania was 11 million. The population grows by about 2% every year. Assuming this growth rate continues, in what year will the population of Sylvania... more
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Precalculus

04/28/23

pre calc question
A scientist begins with a sample of 160 grams of a certain radioisotope. After 19 days, the sample has decayed to 134 grams. How long after the beginning of the process will it take to decay to 30... more
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Precalculus

04/28/23

pre calc question
Convert the equation f(t)=281e^0.22t to the form f(t)=abta =    b =    
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Precalculus

04/27/23

Find sin2x, cos2x, and tan2x if sinx=1/sqrt5 and x terminates in quadrant I
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Precalculus

04/27/23

Calculators in academia.
Coming back to academia after decades. When is it permissible/customary to use calculators in arithmetic. (should I be able to calculate 88 in my head?
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Precalculus Calculus

04/27/23

Calculate derivatives

F(x)= x^3+tan(x)/ln(x)
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Precalculus Math Science Algebra 1

04/27/23

Speed equation, algebra 1
At 7 a.m. gene left Austin and headed south at 10 miles per hour. At 8 a.m. Anne left from the same place and headed south on the same road. If Anne was 60 miles ahead by 3 p.m. on the same day,... more
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Precalculus Algebra 1 Algebra 2

04/27/23

44,-6, 44,-4. Is this geometric or arithmetic
Find them 28th term.Find the sum of the first 7 terms, call its S7
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Precalculus

04/27/23

Three different polar points
Give three different polar points that are at the same position as A = (14, 𝝅/3)You can use degrees or radians in the angle, but remember to use the degree symbol if you give an angle in... more
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Precalculus

04/27/23

Convert the polar coordinate (6, 2𝝅/3) to Cartesian coordinates.
X=?Y=?
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Precalculus

04/27/23

Convert the Cartesian coordinates to polar coordinates, 0 ≤ θ < 2𝝅
I know r=√8 but how do I find the answer for θ?
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Precalculus

04/27/23

Convert the Cartesian coordinates to polar coordinates, 0 ≤ θ < 2𝝅, r >0
#1: Coordinate (2,5)R=√29θ=?I've found the answer to R but how do I solve for theta?
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Precalculus Math Science Algebra 1

04/26/23

Percentage equation, algebra 1

Forty percent of the voters chose Shane. If 540 voters chose the other candidates, how many voters were there?
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04/26/23

Money word equation, algebra 1
Wendy had $10.60 in dimes and quarters. If she had a total of 94 dimes and quarters, how many of each type of coin did she have
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04/26/23

Word equation, dice
Deborah rolls two fair dice. What is the probability that the sum of the numbers is 7?
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Precalculus Math Science Algebra 1

04/26/23

Word equation, algebra

The sum of two numbers is 30 and their difference is 10. What are the two numbers?
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Precalculus

04/26/23

i need help to the product and the rectangular form for the problem below
z1=1/2(cisπ/3) and z2=3(cosπ/6+isinπ/6)
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Precalculus

04/26/23

i need help find the rectangular form for the problem below
z1=1/2(cisπ/3) and z2=3(cosπ/6+isinπ/6)
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Precalculus Calculus Trigonometry

04/26/23

Write an equation that expresses the following relationship.
Write an equation that expresses the following relationship.p varies directly with d and inversely with uIn your equation, use k as the constant of proportionality.
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Precalculus

04/26/23

Find b and c so that y=9x^2+bx+c has a vertex of (4,9)
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Precalculus

04/26/23

To estimate the height of a building.
How would I go about solving this equation? If possible, please explain in details how you solved it.To estimate the height of a building, two students find the angle of elevation from a point (at... more
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Precalculus Math Science Calculus

04/25/23

static equilibrium
A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 300 N and is 4.50 m long. What is the tension in each rope when the 600-N worker stands 1.30... more
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Precalculus Math Biology Calculus

04/25/23

Static Equilibrium Question; Please Help.

A person is standing on a diving board that is supported by two springs, one at each end. The diving board weighs 200 N and is 2.0 m long. What is the force exerted by each spring when a 500-N... more
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