2,572 Answered Questions for the topic Maths

Maths Prealgebra

02/26/19

What fraction of an hour is in 12 minutes give your awnser in the simplest form
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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
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02/24/19

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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Maths

02/24/19

I need help with math
Neil has a total of twelve $5 and $10 bills in his wallet. He has5 times as many $10 bills as $5 dollar bills. How many of each does he have?
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Maths

02/23/19

Four less than the product of a number and 5 is 8 more than twice the number.what is the number?
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Maths Algebra 2

02/22/19

An investor invested some money at 7% and some money at 5%. If the yearly interest on both investments is the same and the total amount of the investments is $12000...
An investor invested some money at 7% and some money at 5%. If the yearly interest on both investments is the same and the total amount of the investments is $12000, find the amount of each... more
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Maths Geometry

02/21/19

math calculations

In triangle​ ABC, the size of angle B is 4times the size of angle​ A, and the size of angle C is 18degrees less than 5times the size of angle A.Find the size of the angles.
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Maths Prealgebra

02/19/19

If their food and beverages cost $25.30 and there is an 8% meals tax, how much is the bill?

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Maths Algebra 2

02/19/19

ax + bx / (x + a)(x − b) =a + b/( x + c ) the 1st fraction has ax+bx as the numerator and a+b as the numerator for 2nd fraction.how did the a and b numerator vanish into =x/ (x + a)(x − b) = 1/ x + c
How did this sudden shift happen, from ax+bx to x and a+b to 1?
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Maths Prealgebra

02/18/19

What is the LCM of 5,6 and 7
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Maths

02/18/19

mother is thrice sons age .10 years earlier son was 20 years younger than his mother .Find their present ages
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02/17/19

how do i deduce the moles of the acid reacted with sodium carbonate
The balanced equation is: Na2CO3 + 2HCl ----> 2NaCl + H2O + CO2Moles of sodium carbonate: 0.03945average volume of acid added: 26.3 cm3Acid = HClThis is standardisation of an acid (titration 1)
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Maths

02/17/19

simultaneous equation grade 10
I need help with the working out on this equation because I always end up with -30x=4.The equations are: -3x-2y=-12 and y=5x-20/3The answer is meant to be x=4 and y=0
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Maths

02/16/19

urgent help for maths
The domain of f is the set A = {−2, −1, 0, 1, 2}. Write the function as a set of ordered pairs. (Use the notation, {( , ), ( , ), ...}, to give your answer.)f(x)= 3x/ x^2+4
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Maths Prealgebra

02/15/19

a parts dilemma

A food preparation has 37 ingredients. of this, 27 ingredients are in 3 parts, 6 ingredients in 12 parts, 1 ingredient in 24 part, 1 ingredient in 48 and 2 ingredients in 96 parts. How do I crack... more
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Maths Algebra 1

02/13/19

Maths - Surds Circle AREA
https://prnt.sc/mkq77w - Screenshot with Picture for QuestionHelp ASAP, Much appreciated
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02/13/19

Include all the quantities required, concisely describe how you would make 50mL of a 0.5% (w/v) solution of BSA (molecular weight: 66 400) using water as a diluent
Include all the quantities required, concisely describe how you would make 50mL of a 0.5% (w/v) solution of BSA (molecular weight: 66 400) using water as a diluent
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02/13/19

Help finding length knowing angles

The angle of elevation of the sun is 64. A telephone pole that is inclined at an angle of 9 degrees (with the vertical) casts a shadow of 5.25 m on the ground. Calculate the approximate length of... more
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Maths

02/13/19

-3(2y+3)-1=-4(y+6)+2y
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Maths

02/11/19

I wanna know how to calculate this Probability
Alex keeps throwing a fair die until he gets a even number..Find the probability that his last dice is numbered ‘ 2 ’.
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Maths

02/09/19

maths problem ratio
Sarah and Henry share some sweets in the ratio 7:6 . Sarah eats 24 of her sweets and the ratio of sweets left becomes 1:2 . How many sweets did Henry have?
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Maths Physics

02/08/19

Addition of Mass and conversion to grams
We have the following masses: 20,000,000 kg; 5,000 dg; 650mg. What is the total mass in grams?
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02/06/19

very hard maths question
a = b + 12 b = c + 4write an equation to show the relationship between c and a
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Maths

02/03/19

A bottle contains 750ml of mineral water. Rachael drinks 50% more than Ross and these 2 friends finish the bottle between them. How much does rachael drink?
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Maths Geometry

01/31/19

Area of a circle
A wire is shaped to form a semicircle, with an area of 180cm squared. The wire is reshaped into a square. What is the area of the square?Needed soon pleasethank you
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