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Nuetrik [128]
3 years ago
15

Age of Peter + age of Pol = 39

Mathematics
2 answers:
GalinKa [24]3 years ago
6 0

Answer:

PETER 18

POL 21

MARY 26

Step-by-step explanation:

I dont know if I did in the right way...

1st: Take any number for peter's or pol's age

I took 18 for peter, RANDOMLY

2nd: Subtract the age from the total to get pol's age

39-18=21 Hence, pols age is 21

3rd: Subtract peter's age from the total to get marys age

47-18=26 Hence, Marys age is 26

4th: Add the age of pol and mary

aaand, you get 47

Done!

Hope it helps!!!

Lemur [1.5K]3 years ago
5 0

Answer:

Peter is 18, Pol is 21 and Mary is 26 years old.

Step-by-step explanation:

Pe + Po = 39 .......A

Pe + M = 44   .......B

Po + M = 47   ........C

Equation B - Equation C gives:

Pe - Po + M - M = 44 - 47

Pe - Po = -3

Add this equation to A:

2Pe + Po - Po = 39 - 3

2Pe = 36

Pe = 18.

Substituting for Pe in B

18 + M = 44

M = 44 - 18 = 26.

Substituting for M in C:

Po + 26 = 47

Po = 47 - 26 = 21.

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Answer:

a = 0

Step-by-step explanation:

a + 5 = -5a + 5      subtract 5 from both sides

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a = -5a                add 5a to both sides

a + 5a = -5a + 5a

6a = 0                 divide both sides by 6

6a / 6  =  0 / 6

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a = 0

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3 years ago
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mixas84 [53]
R = 6
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2 years ago
Which model shows the correct factorization of x2 + 2x – 8?
expeople1 [14]
To factor x^2 + 2x - 8 follow these steps


1) Write to factors, with x as the first term, this way:

(x      )(x      )


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That is +.


The sign to the right of the x of the second factor is the product of the sign of the coefficent of x (this is +) and the sign of the independent term (this is - ).

So that is (+).(-) + -.

Now the two factors have this form:

(x +  ) (x  -  )


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4 0
3 years ago
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Anna is in charge of the alumni fundraiser for her alma mater. She is selling pre-sale tickets for $10 and at-the-door tickets $
Ivenika [448]

Answer:

D. 67

Step-by-step explanation:

To help me see the region we needed to look at, I wrote the inequalities out.

Let x be number of pre-sale tickets and y be the number of at-the-door tickets as your graph suggests.

So one of the inequalities about number of where the other one is about cost.

You are given x+y is no more than 400 or x+y<=400 (the top line graphed in your picture is x+y=400).

You are given 10x+25y is at least 5000 or 10x+25y>=5000 (the bottom line graphed in your picture).

I solved both of these for y.

x+y<=400

Subtract x on both sides giving y<=-x+400 (shaded below line because of the y< part).

10x+25y>=5000

Subtract 10x on both sides:

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Divide both sides by 25:

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The region we should then be looking at is:

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Cost 10(334)+25(66)=4990 (didn't meet the 5000 dollar requirement)

67 D.

(Also if you look at the graph 66 would not be included in the shaded region; it would be too low)

5 0
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Answer:

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therefore , the number is 8

hope that helps uh...☺

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