3,988 Answered Questions for the topic precalculus

8h

#### Precalc question

A street light is 10 feet above a straight bike path. Olav is bicycling down the path at a rate of 15 MPH. At midnight, Olav is 33 feet from the point on the bike path directly below the street...
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12h

#### Is the function True or False

Which of the following is true for ?Question options:
1)
There is a removable discontinuity at x = 3.
2)
There is a non-removable discontinuity at x = 3.
3)
The function is continuous for...
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17h

#### List discontinuities for function

List the discontinuities for the function f(x) = cot( ). Question options:
1)
n( ), where n is an integer
2)
n( ), where n is an integer
3)
n( ), where n is an integer
4)
There are...
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17h

#### Find where equation is discontinuous

Where is discontinuous? Question options:
1)
f(x) is continuous everywhere
2)
1
3)
1, 4
4)
4

17h

#### Find value where f(x) is continuous everywhere

To two decimal places, find the value of k that will make the function f(x) continuous everywhere. Question options:
1)
1.88
2)
9.00
3)
3.76
4)
None of these

17h

#### Find limit using direct substitution

Find the limit of the function by using direct substitution.Question options:
1)
Does not exist
2)
−6
3)
6
4)
0

17h

#### Find lim x --> 1 f(x) using graph

Using the graph of f(x) below, find .Question options:
1)
2
2)
−1
3)
−2
4)
Does not exist

1d

#### Write answer as a + bi

Simplify and write answer as a + bia. (2 + 5i) + (-2 - 4i)b. (6 + 8i) (3 - 3i)

1d

#### Evaluate the six functions without a calculator for the given angles using period as an aide

0= 8pi/3sin0cos0tancscseccot
0 = -13pi/6sincostancscseccot

1d

#### Math calculus Question

Solve the following applied problem using a system of equations. The sum of three numbers is 35. The second number is twice the first, and the third number is twice the second. What are the numbers?

1d

#### Find an equation of the circle that satisfies the given conditions. Center (2,-3) and passes through (9,2)

Give the answers in terms of x and y.

2d

#### How do you memorize the Unit Circle?

The unit circle can be daunting. It is necessary in all higher math classes and I am positive you will have a quiz or test on filling in the X and Y coordinates for each of the angles in the Unit...
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3d

#### Can you help me to solve this

A line has equation y=5x+4. this line has slope:any line parallel to this line has slope:any line perpendicular to this line has slope:

3d

#### Volume of Cylinder

The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the resulting possible error in the volume of the cylinder? Include units...
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3d

#### Find Maximum Volume

A 160-inch strip of metal 20 inches wide is to be made into a small open trough by bending up two sides on the long side, at right angles to the base. The sides will be the same height, x. If the...
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