4,511 Answered Questions for the topic prealgebra

Prealgebra 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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Prealgebra Math Science Algebra 1

04/26/23

Algebra one, speed
The bicyclists were 300 miles apart at 3 p.m. and were headed toward each other. If they met at 9 p.m. and one was traveling 20 miles faster than the other, what was the speed of each bicyclist.
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Prealgebra Math Science Homeschool

04/21/23

algebra one, word equation
The number of girls in Mr. Taylors algebra class exceeded the number of boys by 5. If there were 39 pupils in the class, how many were girls.
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Prealgebra Math Science Homeschool

04/21/23

Algebra one, word equation
Jane and Sophia went to the corner store where packages of gum cost 85 cents each and candy bars cost 60 cents each. They spent $15 and bought 4 more packages of gum than candy bars. How many... more
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Prealgebra Math Science Homeschool

04/21/23

Algebra 1, round trip
Jed rode his scooter at 20 miles per hour and then jogged back at 8 miles per hour. If the round trip took him 7 hours, how far was it to school?
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Prealgebra Math Science Algebra 1

04/19/23

Algebra 1, finding average

the sum of four numbers is 411.6. two of the numbers are 20.4 and 270.5. find the average of the four numbers.
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Prealgebra Math Science Algebra 1

04/19/23

Algebra 1, probability

an urn contains 9 gray marbles and 10 purple marbles. ryan chooses one marble randomly and then another marble randomly. what is the probability that he picks two purple marbles, if he replaces the... more
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Prealgebra

04/19/23

what is the passing line
what is the passing line of (5,2) and (5,-6)
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04/16/23

Question around tax and percentages.
A rare painting increased in value 3,100% over the past 49 years. This was an increase of $33,000. What was the value of the painting 49 years ago? What is the value of the painting now?My answer... more
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04/12/23

A restaurant chain currently has 240 restaurants open nationwide and is opening new restaurants at a constant rate of 15 restaurants per year.
A restaurant chain currently has 240 restaurants open nationwide and is opening new restaurants at a constant rate of 15 restaurants per year. If I construct a function to model the number of... more
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Prealgebra

04/10/23

A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction.

If she maintains a constant speed of 605 mi/h, how far is she from her starting position?
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Prealgebra

04/10/23

(tan77-tan17)/(1+tan77tan17)=tanA=√B
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Prealgebra

04/10/23

To estimate the height of a building, two students find the angle of elevation from a point (at ground level) down the street from the building to the top of the building is 34.
From a point that is 250 feet closer to the building, the angle of elevation (at ground level) to the top of the building is 49. If we assume that the street is level, use this information to... more
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Prealgebra Algebra 1

04/04/23

Half of the sum of x and 6.2 is the same as 19.6 less than x. Create and solve an equation to find x.
Please explain all your steps.
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Prealgebra

04/03/23

Rate of change in math
2y = 7x + 6Find the rate of change please
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03/30/23

Simple Harmonic Motion - When an insect gets caught in a spider web, its struggles cause the web to vibrate. This alerts the spider to a
When an insect gets caught in a spider web, its struggles cause the web to vibrate. This alerts the spider to a potential meal. The frequency of vibration of the web gives the spider an indication... more
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Prealgebra Math Algebra 1 Algebra 2

03/20/23

IGNORE LAST ONE, I NEED THIS
Suppose that Uranus rotates on its axis once every 17.2 hours. The equator lies on a circle with a diameter of 31,762 miles.(a) Find the angular speed of a point on its equator in radians per day... more
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Prealgebra Math Algebra 1 Algebra 2

03/20/23

I NEED THIS PLEASE
A ceiling fan has 14-inch blades (so the radius of the circular fan is 14 inches). Suppose the fan turns at a rate of 57 revolutions per minute.(a) Find the angular speed of the fan in radians per... more
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Prealgebra Math Algebra 1

03/17/23

HELP!!!! WHAT IS THIS??? Solve the quadratic eqation y = x2 + 7x + 1 using the quadratic formula. Round your answer to the nearest hundredth.
Solve the quadratic eqation y = x2 + 7x + 1 using the quadratic formula. Round your answer to the nearest hundredth.
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Prealgebra Math Algebra 1

03/17/23

HELP!! I NEED HELP WITH THIS QUESTION!! What is the vertex of the parabola with the equation y = x2 + 10x - 3?
What is the vertex of the parabola with the equation y = x2 + 10x - 3?
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Prealgebra

03/16/23

Prime Factorization
Pre-Algebra requires an understanding of some specialized Arithmetic. Without this understanding, a student will not be able to pass Algebra.One important skill to have in order to perform this... more
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Prealgebra Math Algebra 1 Algebra 2

03/14/23

I NEED THIS SOON IT WOULD BE GREATLY APPRECIATED
A cyclist is riding a bicycle whose wheels have a diameter of 24 inches. Suppose he is traveling at 26 miles per hour. (A useful fact: =1mi5280ft.)(a) Find the angular speed of the wheels in... more
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Prealgebra Math Algebra 1 Algebra 2

03/14/23

I NEED THIS ASAP PLEASE
A ceiling fan has 17-inch blades (so the radius of the circular fan is 17 inches). Suppose the fan turns at a rate of 59 revolutions per minute.(a) Find the angular speed of the fan in radians per... more
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Prealgebra Math Algebra 1 Algebra 2

03/09/23

I really need help with this:

If the base of a triangle is represented by the expression 8x – 4, and the height of the triangle is represented by the expression 3x²+ 2x -1, write a polynomial function in standard form that... more
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Prealgebra Math Algebra 1

03/09/23

I need help with this: x² + 14x + 33

x² + 14x + 33
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