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rodikova [14]
3 years ago
5

Solve the system of equations: 10x + 7y = 99 and y – x = 2.

Mathematics
1 answer:
svetlana [45]3 years ago
7 0
7y + 10x = 99
y - x = 2
y = 7 , x = 5
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The sum of two numbers is 70 and their difference is 30. Find the two numbers
ikadub [295]

Answer:

Our two numbers are 50 and 20

Step-by-step explanation:

Sum means add together

Difference means subtract each other

x + y = 70

x - y = 30

subtract from each other

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divide both sides by 2

x = 50

our first number is 50

50 + y = 70

subtract both sides by 50

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8 0
2 years ago
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3 years ago
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8 0
3 years ago
Simplify 3 over 2 x 3 over 2 exact answer
nikitadnepr [17]

ANSWER : 9 over 4

or 2 and 1/4

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

*3 over 2 x 3 over 2 is 3/2 x 3/2* << this is for me to remember

Okay so multiplying fractions means for us to multiply across. That means if we line the fractions, we multiply. Like this

 3     x     3

-----         -----                3 times 3 is = 9

 2     x     2                  2 times 2 is = 4

9 over 4 is the same thing as 2 and 1/4  << FRACTION    

                                                ^^      

                                           WHOLE

Hope I helped (:

8 0
2 years ago
Read 2 more answers
1. Write a survey question for which you would expect to collect numerical
Yakvenalex [24]

Answer:

How many siblings do you have?

I hope this helps you out :)

5 0
3 years ago
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