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inysia [295]
2 years ago
12

How to solve the sum of two numbers is 13. twice the larger increased by three times the smaller is 31. find the numbers?

Mathematics
1 answer:
worty [1.4K]2 years ago
8 0
13 divided by 2 is 6.5 and 31 divide by 2 is 15.5 I hope this helped 
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RESOLVER LOS SIGUIENTES SISTEMAS DE ECUACIONES APLICANDO EL METODO DE SUSTITUCION
kiruha [24]

Answer:

x = 1/2; y = 1/3

Step-by-step explanation:

2x + 3y = 2     Eq. 1

-6x + 12y = 1     Eq. 2

Eq. 1

2x + 3y = 2

2x = -3y + 2

x = -3/2 y + 1

Eq. 2

-6x + 12y = 1

De Eq. 1 sabemos que x = -3/2 y + 1

-6x + 12y = 1

-6(-3/2 y + 1) + 12y = 1

9y - 6 + 12y = 1

21y - 6 = 1

21y = 7

y = 7/21

y = 1/3

Eq. 1

2x + 3y = 2

2x + 3(1/3) = 2

2x + 1 = 2

2x = 1

x = 1/2

Respuesta: x = 1/2; y = 1/3

3 0
3 years ago
17505 rounded to the nearest 100
valina [46]
The answer is 17500

505 is the hundreds place
And 505 is closer to 500
8 0
3 years ago
Read 2 more answers
The owner of a football team claims that the average attendance at games is over 523, and he is therefore justified in moving th
USPshnik [31]

Answer:

C) There is not sufficient evidence to support the claim that the mean attendance is greater than 523.

Step-by-step explanation:

Let μ be the the average attendance at games of the football team

The claim: the average attendance at games is over 523

Null and alternative hypotheses are:

  • H_{0}: μ=523
  • H_{a}: μ>523

The conclusion is failure to reject the null hypothesis.

This means that <em>test statistic</em> is lower than <em>critical value</em>.  Therefore it is not significant, there is no significant evidence to accept the <em>alternative</em> hypothesis.

That is no significant evidence that the average attendance at games of the football team is greater than 523.

7 0
2 years ago
which inequality best represents the situation of you must be at least 52 inches tall to ride the water ride
Nataliya [291]
C ; x must be greater than or equal to 52 because you have to be 52 inches or greater to ride this ride.
3 0
3 years ago
Read 2 more answers
Hi how are you today?
Gemiola [76]
I’m ok lots of school work
8 0
2 years ago
Read 2 more answers
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