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3 years ago

The sum of two numbers is 9 and their differecne is 3

Mathematics

2 answers:

Rainbow [258]3 years ago

6 0

Answer:

let's use x to represent the unknown number

and let y=3

solution

x+y=9

x+3=9

x=9-3

x=6

therefore 6 is the unknown number

6+3=9

victus00 [196]3 years ago

4 0

Answer:

The required values are 6 and 3.

Step-by-step explanation:

Let the numbers be x and y. Now, We have to follow the question's statement. First of all, we have to form equations according to the question's statement.

x + y = 9
x - y = 3

Solve the question by elimination method.

x + y = 9
x - y = 3

_______________

2y = 6
y = 6/2
y = 3

<u>Put the value of y in equation 1.</u>

x + y = 9
x + 3 = 9
x = 9 - 3
x = 6

Therefore, the required values are 6 and 3.

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1 year ago

What is -9-x when x= 4.3

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3 years ago

Read 2 more answers

Help what does 2 1⁄3 ÷ 1 1⁄2 =

azamat

Answer:

$1\frac{5}{9}$

Step-by-step explanation:

This is the answer because:

1) Reduce the expression, if possible, by cancelling the common factors.

2) You can also find the reciprocal of 1 1/2 = 3/2 while dividing the expression:

1. Convert both fractions into improper fractions:

$2\frac{1}{3} = \frac{7}{3}$

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2. Divide both fractions:

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Hope this helps! :D

4 0

2 years ago

Using the elimination method how do I find x and y for the following problem:

slega [8]

Answer: x= -2 and y= -3.

Step-by-step explanation:

The given system of equations :

4x-7y=13 ...(i)

4x + 7y = -29 ....(ii)

By Elimination method, Eliminating (ii) from (i) , we get

$-7y-7y=13-(-29)\\\\\Rightarrow\ -14y=13+29\\\\\Rightarrow\ -14y=42\\\\\Rightarrow\ y=\dfrac{42}{-14}\\\\\Rightarrow\ y=-3$

Now, Adding (i) and (ii), we get

$8x=-16\\\\\Rightarrow\ x=\dfrac{-16}{8}\\\\\Rightarrow\ x=-2$

Hence, the solution is : x= -2 and y= -3.

5 0

2 years ago