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1,070 Answered Questions for the topic Math Equations

Math Equations Prealgebra

07/25/19

Amount of each coins

Melinda has eight fewer nickels than quarters.She has $3.50 in the bank .How many coins off each type does she have?
Math Equations Elementary Math

01/23/19

Piggy bank problem

$5.40 in piggy bank. Five more dimes than quarters, seven more nickels than dimes and three times as many pennies as quarters how many of each do I have
Math Equations

12/07/18

Math equations/ problems

Rochelle is creating beaded bracelet to raise money for a school trip. She orders 748 colored beads and plans to use 22 beads for a small bracelets. How many small bracelets can Rochelle make?
Math Equations Math Math Help

10/07/18

Express the answer to that all exponents are positive?

express the answer to that all exponents are positive on the  following expressions: (12x^3)^-2 and x^-5 y^4/x^8 y^7
Math Equations

10/06/18

sheela is 6 years older than half of her sisters age. if sheela is 31 years old then how old is her sister?

pls explain fast i need it 
Math Equations Math Math Problem

10/05/18

area of a rectangle

The area of a rectangle is x4-y4/8xy and the length is x2-y2/2xy a. What is the width of the rectangle? b. If you double the length of the rectangle but keep the same width, what is the new area... more
Math Equations

10/05/18

A tennis racket normally costs ​$70. The tennis racket is on sale for 60​% off. What is the sale price of the tennis​ racket?

A tennis racket normally costs $70. The tennis racket is on sale for 60% off. What is the sale price of the tennis racket?
Math Equations

10/05/18

How do I express that a value needs to be between two separate values (a minimum and a maximum), but should be used as is if it does fall within those limits?

More specifically, I currently have it written as X ≤ Y ≤ Z, but I want to also specify that Y is the default while X and Z only come into effect if Y falls outside of their limit. Or, if more... more
Math Equations Math Maths

10/02/18

Formula that predicts the location of moving enemy

A rocket that explodes not on impact, but explodes on a timer will be shot from myself to the enemy. The timer can only be inputted at the start of the shot. The rocket can only go straight and has... more
Math Equations

10/01/18

what is a equation that has varibles on each side and has a answer of -3?

 this is about math  
Math Equations Math Maths

09/30/18

Formula that predicts the location of moving enemy

A rocket that explodes not on impact, but explodes on a timer will be shot from myself to the enemy. The timer can only be inputted at the start of the shot. The rocket can only go straight and has... more
Math Equations

09/30/18

transpose formula

a little stuck on a formula    1/r=1/r1+1/r2    solve for r1 
Math Equations

09/27/18

How do I interpret the inequality -1 > -6?

I need help on my math homework, im am so confused please help!

What are the next three numbers? -2, -1, -1, 0, -1, 1, -2

I need the answer to this problem... it is a word problem and it is 20% of my grade. My professor said that you have to do a lot a work (subtraction is involved) I will only get 1/4 credit if I... more
Math Equations

09/18/18

a boy ran three and three eights his father ran two and two thirds times him how much did his dad run

 i need help i dont under stand
Math Equations

09/12/18

The rectangle below has an area of x^2+8x+15x square meters and a width of x+3 meters. What is the length.

it needs to be in an expression form.

09/10/18

There are three consecutive integers half the sum of the first and the third number is 28 what are the integers

There are three consecutive integers half the sum of the first and third number is 28 what are the integers

09/08/18

Need help with word problem

A ball is thrown vertically upward. After t seconds, its height, h (in feet) is given by the function h(𝑡) = 88𝑡 − 16𝑡2. After how long will the ball reach its maximum height?

EXPONENTIAL EQUATIONS & FUNCTIONS

EXPONENTIAL EQUATIONS & FUNCTIONS1)A culture of bacteria doubles in weight approximately every 2.5 hours. The number of bacteria after t hours later can be approximated by 𝑁(𝑡) = 175(2.5)𝑡a)... more

09/08/18

Mah equations

A rowing team rowed 90 miles while going with the current in the same amount of time it took to row 10 miles against the current. The rate of the current was 4 miles per hour. Find the rate of the... more

Math Equation For Word Problem

Jamie and Pat volunteered to paint the hall in the E wing. If it would take Jamie 10 hours to paint the hall alone, and take Pat 5 hours to paint the hall alone, how long will it take them to paint... more

Math problem

A ball is thrown vertically upward. After t seconds, its height, h (in feet) is given by the function h(𝑡) = 88𝑡 − 16𝑡2. After how long will the ball reach its maximum height?
Math Equations Math College Algebra

09/07/18

Math problem

The length, l, of a rectangular window is 6 more feet than its width, w. The area of the window is 91 square feet. What are the dimensions of the window?

09/07/18

Word Problem

A medical equipment industry manufactures X-ray machines. The unit cost C (the cost in dollars to make each X-ray machine) depends on the number of machines made. If machines are made, then the... more
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