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AVprozaik [17]
2 years ago
9

A first number plus twice a second number is 8 twice the first number plus the second totals 25

Mathematics
1 answer:
meriva2 years ago
6 0

Answer:

The first number is 14

The second number is -3

Step-by-step explanation:

x + 2y = 8

2x + y = 25

Solving simultaneously,

2x + 4y = 16

2x + y = 25

On subtracting, we have

3y = -9

y = -3

Going to substitute for y, we have

x + 2(-3) = 8

x - 6 = 8

x = 14

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Simplify: (3x 2y -2) 3 / (9xy 3) 3
Dafna11 [192]

Answer:

0

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, what I would do is line it up so you can cancel things out. I.e.:

(3x*2y-2)3

(9xy*3)3

Both of the 3s can cancel out

3x*2y-2

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6 0
2 years ago
Find ln 5.1 to the nearest thousandth
LenKa [72]

Answer:

5.1.

Step-by-step explanation:

5.1 = 5.1000. You would then round down to find the nearest thousandth, which is 5.1.

Hope this helps!

8 0
3 years ago
21. please and thank you
olga2289 [7]

16 is the answer just add

8 0
2 years ago
Find the volume of th] cylinder. Round your answer to the nearest tenth if necessary. Use 3.14 for 1.
spayn [35]

Answer:197.8

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9=28.26, Step three mutiply 28.26*7=197.82.But if you round 197.82034 to the nearest tenth which is moving one decimal place to the right you'll will get 197.8.

6 0
2 years ago
If someone can pls give the answer with steps that would be greatly appreciated :)
AleksAgata [21]

Answer:

Step-by-step explanation:

Let C be the number of correct answers

Let B be the number of questions not answered

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Total = 2*C + B -  W

It's a trinomial. There are three unrelated terms.

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3 years ago
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