4,511 Answered Questions for the topic prealgebra

07/16/22

Trigonometric Identities
If sin(theta) = 0.3 and 0 < theta < pi / 2 ( first quadrant ). Find each of the following : A) sin (2theta)B) sin (4theta)C) cos (4theta)D) sin (theta/2)E) cos (theta/2)... more
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Prealgebra Math Science Algebra 1

07/14/22

Sixteen percent of 4200 is what number? Work the problem and then draw a diagram of the problem.
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Prealgebra

07/13/22

question algebra
what is the y-intercept? please show the steps
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Prealgebra Math Science Algebra 1

07/13/22

If 72 is increased by 130 percent, what is the result? Work the problem and then draw a diagram of the problem.

Please remember to diagram
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Prealgebra Math

07/11/22

Need help, what are the right answers?
Under which conditions can the zero product property be used to solve a polynomial equation? Choose all that apply: The polynomial is factored completely The highest exponent in the equation is... more
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07/07/22

Find the Range of this function
I also was having trouble finding the range of this equation too.Find the rangeProblem: x2- 4 / x2+ 5x + 6I did the inverse switching the x and y and got R: (-inf, 1)U(1, inf)My work: x = y2- 4 /... more
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07/07/22

Finding the Range
I was having trouble finding the range of the equation and was wondering if this was correct.Find the rangeProblem: x2- 4 / x+2I did the inverse switching the x and y and got R: (-inf, -2)U(-2,... more
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Prealgebra Algebra 1 Algebra 2

07/03/22

Use a system of equations. The sum of three Integers Is 107. The sum of the first and second Integers exceeds the third by 75. The third integer is 74 less than the first. Find the three integers.
Find the 3 integers.
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07/02/22

Consider the name as MARIAHOSSAIN and Roll number as 21101164
1.Find the total number of arrangements from the letters of your name taken all at a time without changing the the positions of vowels and consonants.2.find the total number of three digit numbers... more
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Prealgebra

06/27/22

What is the value expression of -16+12
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Prealgebra

06/24/22

Can you help me with this question

The perimeter of a rectangular painting is 308 cm . If the length of the painting is 86 cm what is its width?
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Prealgebra Math

06/23/22

Write the following number in scientific Notation

1,456,823
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Prealgebra Math

06/23/22

Exponents and Scientific Notation

(5x2)3
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Prealgebra Math

06/23/22

Solve the following Compound Interest question:
Adam put $2345 in the bank at 4.2% Interest Compounded annually. How much was in his account after 4 years?
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Prealgebra Math

06/23/22

Exponents and Scientific Notation

(4x)2 (5x2)
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06/17/22

What is the height of the football at the end of its trajectory according to question 1?

A football is thrown in the air and then blown to the right by the wind. The thrower lifts it 20 feet directly into the air before it is carried 10 feet the right at a 45 degree angle. Later, the... more
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Prealgebra Algebra 2

06/15/22

A swimmer can cross a lake in 15 minutes and 35 seconds while traveling at 3.85 miles per hour. If the swimmer wants to cross the lake in 13 minutes, how fast must he swim?
Help
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Prealgebra Math

06/15/22

Which subject in the problem is represented by x in your equation? 
Ms. Pacheco, Mr. Edwards, and Mr. Richards are three math teachers at Turner Middle School. Ms. Pacheco is three years older than Mr. Richards. Mr. Edwards is twice as old as Mr. Richards. The sum... more
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Prealgebra Math

06/15/22

Which subject in the problem is represented by x?
Ramon was studying pond life in Doyle Park. In two hours, he counted four more frogs than turtles. The number of crayfish he counted was three more than twice the number of turtles. In total, he... more
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Prealgebra Math

06/15/22

How do I write an equation for this situation?
The Mackinac Bridge in Michigan is 1158 meters long.The Tsing Ma Bridge in Hong Kong is 97 meters longer than the Golden Gate Bridge in California.  Together, all three bridges have a length of... more
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Prealgebra

06/15/22

The radioactive element​ carbon-14 has a​ half-life of 5750 years. A scientist determined that the bones from a mastodon had lost 70.3​% of their​ carbon-14.
The radioactive element​ carbon-14 has a​ half-life of 5750 years. A scientist determined that the bones from a mastodon had lost 70.3​% of their​ carbon-14. How old were the bones at the time they... more
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Prealgebra Math

06/14/22

5-D Process Problem

Complete the 5D Process problems:Ms. Pacheco, Mr. Edwards, and Mr. Richards are three math teachers at Turner Middle School.  Ms. Pacheco is three years older than Mr. Richards.  Mr. Edwards is... more
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Prealgebra Math

06/14/22

Write an equation for this situation:

Write an equation for this situation: Sarah picks 48 flowers every 14 minutes. (Use x and y for variables)
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Prealgebra

06/14/22

At a concession stand, five hot dogs and four hamburgers cost $14; four hot dogs and five hamburgers cost $15.25. find the cost of one hot dog and one hamburger
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Prealgebra

06/14/22

Pre algebra Help
Each of the 212 pages in the largest fashion catalog measured 2.1 m by 2.2 m. What was the perimeter of a page? What was the area?
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