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julia-pushkina [17]
3 years ago
14

the ages of three siblings are all consecutive integers the sum of their ages is 39 how old is the youngest sibling variable equ

ation solution​
Mathematics
1 answer:
Verdich [7]3 years ago
8 0

Answer:

Step-by-step explanation:

Let x = the age of the youngest child

Let x + 1 = the age of the middle child

Let x + 2 = the age of the oldest child

x + x + 1 + x + 2 = 39

3x + 3 = 39

3x = 36

x = 12 years

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FromTheMoon [43]
A square has 4 right angels and 4 sides with equal angels ;)
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3 years ago
Which expression has the greatest value when x=3
Luden [163]

Answer:

The third expression: (2x)^3

Step-by-step explanation:

Plug in 3 for x in each expression

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Use PEMDAS

2 (3 × 3 × 3)

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2 (27)

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(The last expression told us 2x^3 = 54 so feel free to use this information to make life easier)

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Use PEMDAS

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Use PEMDAS

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8

216 is the greatest value so the third expression is the answer

7 0
3 years ago
Jennifer bought 5 meters of ribbon. She gave 2 meters of ribbon to her sister. Jennifer will use some or all of the remaining ri
Sergeu [11.5K]
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6 0
3 years ago
F(x) = -4x2 + 4x – 4<br> Find f(3)
ValentinkaMS [17]

F(3) occurs when x =3. So lets plug 3 into our equation.

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F(3) = -28

I hope this helps! :)

5 0
3 years ago
2x + 3 = -x + 12 <br><br> Solve the equation, explanation is good.
raketka [301]

Answer:

3

Step-by-step explanation:

2x + 3 = -x + 12

subtract 3 from both sides

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add x to both sides

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divide by 3

x = 3

7 0
3 years ago
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