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lara [203]
4 years ago
11

The sum of three consecutive even numbers is 438. What is the 2nd number?

Mathematics
1 answer:
denis-greek [22]4 years ago
4 0

First number = x

Second number = x + 2

Third number = x + 4

X + x +2 + x + 4 = 438

Simplify:

3x + 6 = 438

Subtract 3 from both sides

3x = 432

Divide both sides by 3

X = 144

The second number is 144 + 2 = 146

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3/4n - 18 = 1/4n - 4
kolezko [41]
3/4n -18= 1/4n -4
⇒ 3/4n -1/4n= -4+18
⇒ 2/4n= 14
⇒ 1/2n= 14
⇒ n= 14/(1/2)
⇒ n= 14* (2/1)
⇒ n= 28

Final answer: n= 28~

7 0
4 years ago
Help I dont get this and its do tomorrow.
dangina [55]
BECAUSE 

4(2x)= 8x
4(1)= 4

SO

4+8x= 4(2x+1)

4 0
3 years ago
Enrollment in the pta increased by 35% this year. last year there were 160 members in the pta .how many pta members are involved
Vesna [10]

Answer:

35% of 160 = 56

160 + 56 = 216

There are 216 PTA members this year

3 0
3 years ago
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maxonik [38]

Answer:

Step-by-step explanation:

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5 0
3 years ago
What is the additive inverse of the polynomial –9xy2 + 6x2y – 5x3?
9966 [12]

Answer:

–9xy2 – 6x2y + 5x3

–9xy2 – 6x2y – 5x3

9xy2 + 6x2y + 5x3

9xy2 – 6x2y + 5x3

the answer is 9xy2 – 6x2y + 5x3

Step-by-step explanation:

6 0
3 years ago
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