2,563 Answered Questions for the topic Maths

03/09/19

Pythagoras - time/speed/distance

In a game of tennis, a ball leaves a racket in a horizontal direction from a height of 0.39 m above the ground. The speed of the ball is 35 ms-1. The ball takes 0.28 seconds to reach the ground... more

03/08/19

If one brick is 8" x 4" x 2", how many bricks would make a 18" x 24" x 5"?

One brick is 8 inches in length, 4 inches wide and 2 inches thick. How many bricks would make a 18" x 24" x 5"?
Maths Prealgebra

03/07/19

How many pizzas did each student eat? Please help simple maths question.

Three students go to a pizza dinner. Student 1 ears 1/2 of the first pizza, 1/3 of the second, 1/4 of the third and all of the fourth. Student 2 eats 1/5 of what Student 1 left. Student 3 eats 1/2... more
Maths Algebra 2

03/07/19

Evaluate d – a + b if a = –76, b = 32, d = –7.

Evaluate d – a + b if a = –76, b = 32, d = –7.
Maths Algebra 1

03/07/19

Numerical Coefficient

The numerical coefficient of x in -3 / 7 X + 1 is _____.
Maths Algebra 2

03/07/19

The numerical coefficient of –xy is _______.

The numerical coefficient of –xy is _______.
Maths Algebra 1

03/06/19

Algebra question

When a number is added to 9, the result is 3 times more than twice the number
Maths

03/06/19

the sum of fractions

Rohit rode his bike 5 2/3 miles. Sarah rode her bike 5 1/5 miles. Who rode a greater distance? Write an inequality that compares the fractions.
Maths Prealgebra

03/05/19

What is the pumping rate, in L/Hour of each pump?

Pump A delivers water at twice the rate of pump B. If both pumps operate together a tank of 18000 liters capacity can be filled in 3o minutes.
Maths Algebra 1

03/05/19

What time will car A catch up to car B

Car A left Sydney for Melbourne at 6:00am and travelled at an average speed of 80km/h. At 7:30am car B left Sydney for Melbourne. If car B travels at an average speed of 100km/h, what time will the... more
Maths Algebra 2

03/03/19

Can someone please help me out with this please ??

1a. For the equations y1=2x-5 and y2=3x-3: Complete the table fox x values between -3 and 2. 1b. From the table, find the point of intersection between the graphs of the linear equations,... more
Maths Algebra 2

03/03/19

Can someone please help me figure this out??

1. A tank contains 150 L of water, and water is added to it through a hose at a rate of 50 L/min. V is the volume of water in the tank in litres, and t is the time in minutes.1a. Write down an... more
Maths Algebra 2

03/03/19

Can someone please help me with this question and show how they got it please??

As part of its urban renewal strategy Camtown council makes 1/4 hectare of land available for building middle-income homes. The project manager decides to build 10 houses on blocks of varying... more
Maths

02/28/19

the square of a number equals nine times that number. find the number

Maths Calculus

02/28/19

How do you find generalized equations when optimizing using calculus?

We have a homework question that we're struggling with and can't seem to find answers to.The problem involves minimizing lengths of strapping used to fasten different boxes down.The box is always... more
Maths Math Science

02/27/19

HELP! PROBLEM SOLVING QUESTION INVOLVING 2 TRAINS! ASAP!!!

Train A departs from a station and travels at a constant speed. Train B departs 2 hours from the same station, travelling at 60km/h. If it catches up with Train A in 4 hours after departing, what... more
Maths Algebra 2

02/26/19

How to calculate what percentage A is of B...without knowing what B is

So for my maths class we are doing some revision, i am having a bit of trouble understanding how to find principle; i just can't find an explanation of how 900 divided by 0.18 is 5,000 in short, i... more

The height of a triangle is 3 cm less than its base. The area of the triangle is 90 square cm. Find the base of the triangle.

so I think I have the answers BUT it doesn't match 90 square cm. The answers were base: -15, 12. Height: -18, 9. However, it does equals to -90 IF 1/2 x -15 x 12 but it's negative. 😭😭

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