15,254 Answered Questions for the topic precalculus

Precalculus

04/03/24

Find one positive and one negative coterminal angle of -650 degrees.
Here's what I did: Positive: Negative:-650 + 360 = -290 -650 - 360 = -1010-2909 + 360 = 70When I looked at the answer key, I got the positive coterminal correct but the negative coterminal... more
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Precalculus

04/02/24

Given vector v please 🙏🏽

Given vector vec v =9 vec i +3 vec j which of the following is a vector that is orthogonal to vec v
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Precalculus

04/02/24

Given vectors v please 🙏🏽 help
Given the vector vec v = langle1,3 rangle find a unit vector in the same direction as vec v l1/10, 3/10\rangle; \(sqrt(10))/10, (3sqrt(10))/10\rangle; \(3sqrt(10))/10, (sqrt(10))/10\rangle; 1/6,... more
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Precalculus

04/02/24

Given vector v please solve

Given the vector vec v = langle1,3 rangle find a unit vector in the same direction as vec v l1/10, 3/10\rangle; \(sqrt(10))/10, (3sqrt(10))/10\rangle; \(3sqrt(10))/10, (sqrt(10))/10\rangle; 1/6,... more
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Precalculus

04/02/24

Please help Not if I have the correct answer

Given vectors vec u = langle5,-3 rangle and vec v = langle-3,-6 rangle; find 4 vec u -4 vecv.vec v = langle32,12 rangle; vec v = langle-12,-32 rangle; vec v = langle-32,-12 v = langle12,32 rangle;... more
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Precalculus

04/02/24

Area of Triangle
A = 1/2absin(x)Does the pheta, for sine have to be in radians, or can we leave it as degrees?
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03/31/24

Which of the following statements is true? (calculus)
Consider the series from n=1 to ∞ ∑an , where an = ((e^(n-1))(√n+6))/(n+6)!In this problem you must attempt to use the Ratio Test to decide whether the series converges.Compute L=lim as n... more
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Precalculus Science Calculus Sat Math

03/31/24

Check all of the following that are true for the series

Check all of the following that are true for the series from n=1 to ∞ ∑ (5-cosn)/n.A. This series convergesB. This series divergesC. The integral test can be used to determine convergence of this... more
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Precalculus

03/30/24

How do I solve this: Tan(x) = -15/8, sin(x) > 0

I tried putting in the Q2, but 15 was positive and 8 was negative. I tried putting it in Q4, but I could not get the right answer.
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Precalculus

03/30/24

Radians vs degree mode
When it comes to trig, how do I know when to use degree mode or radians mode? I know for elevation/depression problems I have to put my calculator in degrees mode, but why do we do that?
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Precalculus

03/26/24

Given isosceles triangle ABC with base BCeach base angle measures 75 deg and each leg is 30 inches longfind the area of this triangle 225sqrt(2); 15/2 225 225sqrt(3) 450 None of these
Given isosceles triangle ABC with base BCeach base angle measures 75 deg and each leg is 30 inches longfind the area of this triangle 225sqrt(2); 15/2 225 225sqrt(3) 450 None of these
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Precalculus

03/26/24

ABC and DEC are right triangles with night angles and respectively DE = 6EC = 18 and BE = 12 find the area of triangle ABCNote that the triangle may not be drawn scale)
ABC and DEC are right triangles with night angles and respectively DE = 6EC = 18 and BE = 12 find the area of triangle ABCNote that the triangle may not be drawn scale)
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Precalculus

03/24/24

find polynomial f(x) with real coefficients having the given degree and zeros.
degree 4, zero:1, multiplicity: 2,2i
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03/23/24

Linear Algebra Question
Find the shortest distance from the point P=(-3,-2,-3) to a point on the line given by 1: (x,y,z) = (-7t, 1t, 1t). Please help ASAP. Another person answered this before but got it wrong. I also... more
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03/23/24

Calculus Help!!!
Evaluate (an integral f) sec^2 (x)(1+tan^3(x))dx
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03/23/24

Calculus Help!!
Determine the area of the region bounded by x=3+y^2, x=2-y^2, y=1, y= -2
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03/23/24

Calculus Help!!
a) Evaluate the Rieman sum for f(x) = 5x^2-2x, taking the sample points to be right endpoint and a=0,b=4, and n=2b) Evaluate (an integral of f 0 at the bottom and 4 at the top) 5x^2-2xdx, Using... more
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03/23/24

Calculus Help!!!
if f(2)=16, f' is continous, and (the integral of f2(at the bottom) and 6 as an exponent) f'(x)dx=19. what is the value of f(6)?
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03/23/24

calculus Help!!
if (an integral (f0^9)) f(x)dx=37 and (another integral f0^9) g(x)dx=16, Find (an integral f0^9) [2f(x)+3g(x)]dx
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03/23/24

Calculus Help!!
let f'' = x^6-4x^4+x+1 find f(x)
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Precalculus Math Calculus Prealgebra

03/22/24

Linear Algebra question
Find the shortest distance from the point P=(-3,-2,-3) to a point on the line given by 1: (x,y,z) = (-7t, 1t, 1t). Please help ASAP! Thanks!
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Precalculus Algebra 2

03/22/24

A bank pays 6% nominal annual interest, compounded daily. About how long, nearest day, will it take for a deposit of $1000 to reach $1500?
A bank pays 6% nominal annual interest, compounded daily. About how long, nearest day, will it take for a deposit of $1000 to reach $1500?
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Precalculus

03/21/24

how do I INSTANT BOOK A LESSON LAST MINUTE
I need to instant book a last minute lesson for precalculus
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Precalculus

03/21/24

find a polynomial
find a polynomial with the zeros -2(multiplicity 2) and 2( multiplicity 2) that passes through the graph (-3,75)
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03/18/24

How do I solve this integral Calculus 2 question?
Here's the link to the question: https://ibb.co/b1k3dTH The integral is improper for two reasons: the interval [0,∞][0,∞] is infinite and the integrand has an infinite discontinuity at x=0.... more
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