Kathy P.

Geometry

01/18/21

The Perimiter Of A Rectangle Is 84 Feet. The Reaction Of The Length To Width is 5:1. Find The Area Of The Rectangle

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Trigonometry

01/16/21

Trigonometric question

If tan x = 3 tan y, prove that tan(x − y) = (sin 2y) / (2−cos2y), You can only work on one side of the identity.

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Precalculus

01/16/21

precalculus question

Two cyclists, 96 miles apart, start riding toward each other at the same time. One cycles 3 times as fast as the other. If they meet 4 hours later, what is the speed (in mi/h) of the faster... more

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Algebra 1 Algebra Mathematics

01/15/21

Solve the linear system.

Enter your answer as an ordered pair.2x + 3y = 31 y = x + 7

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Algebra 2

01/14/21

derive the equation of the parabola with a focus at (2,4) and a directrix of y=8

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Algebra 2

01/14/21

Use the digits -9 to 9 to complete the puzzle below.

Use the digits -9 to 9 to complete the puzzle below. Try all the combinations. But as you begin doing that, you will realize that in some cases you are looking for factor combinations with a... more

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Algebra 1

01/13/21

What is the equation of a line that has a slope of 0 and passes through (5, −2)?

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Math Algebra 1

01/13/21

The sum of two numbers is 14.9 The larger number is 0.95 more than twice the smaller. What is the larger number?

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Math Calculus

01/13/21

Calculus 1 Question

Your target is 500 meters north, 300 meters west, 500 meters below you. Is the target within 1000 meters?

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Calculus

01/12/21

An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each other.

One airplane is 150 miles from the point and has a speed of 300 miles per hour. The other is 200 miles from the point and has a speed of 400 miles per hour.(a) At what rate is the distance between... more

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Math Sat Math Act Math

01/12/21

Write the expression as a polynomial: (5-2a+a²)(4a²-3a-1)

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Algebra 2

01/12/21

Applications of linear equations

Jim builds benches in his spare time. Good quality plywood costs $4.50 per square foot. There is approximately a 10% waste of material due to cutting and fitting. He also figures $275 per month for... more

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Algebra 1

01/11/21

Write an equation parallel and perpendicular to y=5x+2

I have no idea how to do this. I am completely lost. It would be amazing if someone could help me right now.

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Math Algebra 1

01/10/21

Find the number:

Twice the difference of a number and three is four more than the number.

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Math Algebra 2 Algebra

01/10/21

Transform the absolute value equations into two linear equations. |x-10|=17

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Algebra 2

01/10/21

Calculate Velocity

Suppose a paper ball is shot from 5 feet off the ground and the paper ball reaches a height of 10 feet after 3 seconds. Calculate the velocity of the ball.

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Math Pre Calculus

01/08/21

How to find the equation of a parabola in standard form as well as the ordered pair for the focus point and the equation of the directrix

The vertex of the parabola is (-7.99,5) and a point on it is (-9,4) and it opens downward...and that's all I know

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Trigonometry

01/06/21

Find the exact value of each expression.

1. arcsin (−1/2) 2. csc^−1 (−2) 3. arccot(1) 4. sec^−1 (−2) 5. arccos (1/2) 6. tan^−1 (−1)

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Precalculus

01/06/21

Please help me with this.

Find the half-life of a radioactive substance that decays at a continuous rate of 16% per minute, Round your answer to three decimal places. The half-life is minutes.

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Precalculus

01/06/21

Please help me with this

A bank account is growing by 2.2% per year. Find the doubling time. Round your answer to the nearest integer.The doubling time is years.

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Algebra 2

01/05/21

Can you help me? Thank you so much.

11) The Algebros start a side business selling t‐shirts. The first year they make $500 (mostly from family and friends). The next several years the revenue increased by about 6.8% each year. a) ... more

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