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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

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

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Maths Science Biology Chemistry

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 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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Maths Chemistry Biochemistry

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

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Maths Triangles Mathematics Angles

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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Maths Differential Equations

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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Maths Algebra 1 Words Problem Mixture

01/31/19

Chemicals A & B are formed by mixing x, y & z in the ratio of 8:3:4 and 4:3:8 respectively.?

Chemicals A & B are formed by mixing x, y & z in the ratio of 8:3:4 and 4:3:8 respectively.? the cost per liter of x, y and z is $300, $240 and $180 respectively. Chemical C is produced by... more

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Maths

01/30/19

Group of people

One fourth of one fourth of a group of people claim that they are innovative twice the square root of the group claim to be productive and the remaining 84 claim they are realistic find the total... more

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Maths

01/30/19

you deposit $750 in a savings account that earns 5% annual interest compounded quarterly write a function that represents the balance after t years

you deposit $750 in a savings account that earns 5% annual interest compounded quarterlywrite a function that represents the balance after t years

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Answers •1

I need help with math

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

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...

math calculations

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

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

What is the LCM of 5,6 and 7

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

how do i deduce the moles of the acid reacted with sodium carbonate

simultaneous equation grade 10

urgent help for maths

a parts dilemma

Maths - Surds Circle AREA

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

Help finding length knowing angles

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

I wanna know how to calculate this Probability

maths problem ratio

Addition of Mass and conversion to grams

very hard maths question

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?

Area of a circle

Chemicals A & B are formed by mixing x, y & z in the ratio of 8:3:4 and 4:3:8 respectively.?

Group of people

you deposit $750 in a savings account that earns 5% annual interest compounded quarterly write a function that represents the balance after t years

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