2,195 Answered Questions for the topic Pre Calculus

11/17/20

Find a formula for h(x). Give an exact expression.
h is a trigonometric function of the form h(x)=a cos(bx+c)+d.Below is the graph of h(x). The function has a maximum point at (3,6) and a minimum point at (6.5, -9). Find a formula for h(x). Give an... more
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11/17/20

What is the amplitude of the function?
Below is the graph of a trigonometric function. It intersects its midline at (π, 2.75) and it has a maximum point at point at (4/5 ​π, 6.75). What is the amplitude of the function?(The pi in the... more
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Pre Calculus Math Algebra

11/16/20

Rational Expression
One pipe can fill a pool in six hours. When two pipes are opened, they fill the pool in five hours. How long would it take to fill the pool ... more
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11/16/20

What is the period of the function? Give an exact value.
Below is the graph of a trigonometric function. It intersects its midline at (−3.5,−0.8)left parenthesis, minus, 3, point, 5, comma, minus, 0, point, 8, right parenthesis and it has a maximum point... more
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Pre Calculus Math Prealgebra Precalculus

11/15/20

Find the equation of the line in slope-intercept form:
A line passes through the points P(-2, -3) and Q(3, -5). Find the equation of the line in slope-intercept form.
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Pre Calculus Precalculus

11/14/20

If sin(θ) = 1/4 and θ is in the 2nd quadrant, find cos (θ)
If sin(θ) = 1/4 and θ is in the 2nd quadrant, find cos (θ)What would cos(θ) be?
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Pre Calculus Precalculus Pre Calculus

11/14/20

If tan(θ) = 4/3, 0 ≤ θ ≤ π/2, then
If tan(θ) = 4/3, 0 ≤ θ ≤ π/2, thensin(θ) equals ____cos(θ) equals ____sec(θ) equals ____
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11/13/20

Identify four ordered pairs on the graph of the function.
Identify four ordered pairs on the graph of the function.f(x)= 12x2+15x+3/ -3x-6
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11/13/20

Identify four ordered pairs on the graph of the function.
f(x)= 7/x+6 Identify four ordered pairs on the graph of the function.
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11/13/20

  Identify four ordered pairs on the graph of the function
f(x)=−2x+9/x−1 Identify four ordered pairs on the graph of the function.
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11/13/20

Use synthetic division to determine if the given value for k is a zero of this polynomial. If not, determine p(k).
Use synthetic division to determine if the given value for  is a zero of this polynomial. If not, determine .p(x)=2x3−3x2−11x−20; k=4 is k a zero of this polynomial?
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11/12/20

If tan(θ) = 4/3, 0 ≤ θ ≤ π/2, then

If tan(θ) = 4/3, 0 ≤ θ ≤ π/2, then sin(θ) equals ____cos(θ) equals ____sec(θ) equals ____
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11/12/20

Without using a calculator, compute the sine and cosine of (7π) /4 by using the reference angle.
Without using a calculator, compute the sine and cosine of (7π) /4 by using the reference angle.What is the reference angle? ____ radiansIn what quadrant is this angle? ___ sin (7π) /4 =cos (7π) /4 =
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Pre Calculus Calculus Precalculus

11/12/20

If sin(θ) = -3/5, and θ is in quadrant III, then find (a) cos (θ) = (b) tan (θ) = (c) sec (θ) = (d) csc (θ) = (e) cot (θ) =
If sin(θ) = -3/5, and θ is in quadrant III, then find (a) cos (θ) =(b) tan (θ) =(c) sec (θ) =(d) csc (θ) =(e) cot (θ) =
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11/12/20

Quadratic Equation
a photograph measuring 16cm by 12cm is to be surrounded by a mat before framing. The width of the mat is to be the same on all sides of the photograph. The area of the mat is equal to the area of... more
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Pre Calculus

11/12/20

A toy tractor sold for $244 in 1975 and was sold again in 1989 for $473. Assume the growth in the value V of the collector's item was exponential.
What is the value of k?  (Round to the nearest thousandth)b) Estimate the value of the toy in 2012. $ (Round to the nearest dollar)c) What is the doubling time? years (Round to the nearest tenth)
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11/11/20

The area of a triangle is 150 cm squared. If the area of a triangle is given by the formula A=1/2bxh...
The area of a triangle is 150 cm squared. If the area of a triangle is given by the formula A=1/2bxh, write an equation which relates the triangles base, b, as a function of its height, h. (In... more
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Pre Calculus

11/11/20

Evan bought a small 25" TV for her multimedia classroom. The size of the TV is determined by the length of its diagonal. The area of the TV screen is found 300 in², what is the dimension of small Tv?
This is about pre calculus Systems of nonlinear equations
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11/10/20

A wheel with a diameter of 8 inches completes 15 revolutions in 3.5 seconds. Find the linear speed of the edge of the wheel in inches per second.
A wheel with a diameter of 8 inches completes 15 revolutions in 3.5 seconds. Find the linear speed of the edge of the wheel in inches per second. Round to the nearest whole number.
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Pre Calculus Calculus Precalculus

11/10/20

Factor the trigonemetric expression: cot^2(x) + cscx - 1
How do I go about factoring this trigonometric expression. I am quite confuseed.
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Pre Calculus Math Precalculus Sat Math

11/09/20

NEED HELP ON PRECAL HW ASAP!!!
A pizza pan is removed at 8:00PM from an oven whose temperature is fixed at 425F into a room that is a constant 74F After 5​ minutes, the pizza pan is at 300F ​(a) At what time is the temperature... more
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Pre Calculus

11/09/20

The angle of elevation to the top of a tall building is found to be 8° from the ground at a distance of 1.4 mile from the base of the building. Using this information, find the height of the building.
The angle of elevation to the top of a tall building is found to be 8° from the ground at a distance of 1.4 mile from the base of the building. Using this information, find the height of the... more
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Pre Calculus

11/07/20

Use Synthetic Division to Find Upper and Lower Bounds
Use Synthetic Division to Identify bounds of the real zeros. Find Upper bound and he greatest lower bound guaranteed by the Upper and lower Bounds of Zero Theorem.H(x)=3x^3-x^2+108x-36
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Pre Calculus

11/06/20

Use a graphing calculator or a graphing utility (like Desmos) to graph the function r(x)=x^3−2x^2−15x+3. Use the graph to respond to the following:
(a) State the interval(s) for which r is increasing. If needed, round values to two decimal places(b) Estimate the relative minimum and relative maximum point. Round coordinates to two decimal... more
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Pre Calculus

11/06/20

Suppose that f(12)=7650 and f(8)=2400. (a) Write the linear function f, and (b) find the value of f(5).
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