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Inessa [10]
3 years ago
8

Please solve this question!​

Mathematics
1 answer:
iris [78.8K]3 years ago
8 0

Answer: smaller number = 5, bigger number = 8

<u>Step-by-step explanation:</u>

Let x represent the smaller number

and y represent the bigger number.

The sum of 2 times the smaller number and 3 times the bigger number is 34.

EQ1: 2x + 3y = 34

Two times the bigger number is subtracted from 5 times the smaller number is 9.

EQ2: 5x - 2y = 9

Solve the system of equations using the Elimination method:

EQ1: 2x + 3y = 34      →   2(2x + 3y = 34)     →   4x + 6y = 68

EQ2: 5x - 2y = 9       →    3(5x - 2y = 9 )      →  <u> 15x - 6y</u> = <u>27 </u>

                                                                         19x         = 95

                                                                      <u> ÷19          </u>  <u>÷19 </u>

                                                                                  x =  5

Substitute x = 5 into either equation to solve for y:

EQ2: 5x - 2y = 9

      5(5) - 2y = 9

        25 - 2y = 9

              -2y = -16  

                  y =  8

The smaller number (x) is 5 and the bigger number (y) is 8.

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Anton [14]

Answer:

yes, the meal costs 25.60

Step-by-step explanation:

I used a slightly different method but B (Yes. They have enough to pay their bill: 21 dollars times 1.06 = 22 dollars and 26 cents and 22 dollars and 26 cents times 1.15 = 25 dollars and 60 cents.) is correct.

21*0.06=1.26

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22.26*0.15=3.34

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4 0
3 years ago
Read 2 more answers
There are 9cans that can store 45 tennis balls what is the constant of the proportionality for this situation
Lapatulllka [165]
Let the total number of cans be x and the total number of tennis balls be y,

Since increasing the total number of cans causes the total number of tennis balls to increase too, x and y is direct in proportion.

Let the constant be k,
y = kx
45 = k9
k = 45/9
= 5

The constant of the proportionality for this situation is 5.
4 0
4 years ago
AB = 10x+4. BC =4x-3. AC=12x+16
Artemon [7]
Go to wolfram alpha.com and then type that in
3 0
4 years ago
Could anyone save my life??
defon

Answer:

Step-by-step explanation:

y -5x = 2

10x -3y =9

substitute x for 3/5 and y for -1

-1 -(5*3/5) = 2

(10*3/5) -3(-1) =9

simplify :

-1 -3 =2

6+3 =9

-4 =2 Not true

9=9 True

Conclusion: the point (3/5, -1) is not a solution to the given system of equations

8 0
3 years ago
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