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Westkost [7]
3 years ago
5

What is the answer for 2(a-b)-(b-a)

Mathematics
1 answer:
Kruka [31]3 years ago
7 0
2(a - b) - (b - a) = 2a - 2b - b + a = 3a - 3b
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Can someone please help me on this question? This question has 2 answer choices. Thank you.
grin007 [14]
Hello!

To solve this you have to find the ratio between the two cylinders

Cylinder 1 height is 30
Cylinder 2 height is 20

this is a 30:20 ratio

This can be reduced to a 3:2 ratio

Now you look for one that are also equal to 3:2

3 * 7 = 21
2 * 7 = 14

The answers are 3:2 and 21:14

Hope this helps!
4 0
3 years ago
9x²+12xy+4y²???PLEASE HURRY 15 POINTS~
irakobra [83]

Answer:

(3x+2y)²

Step-by-step explanation:

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3 years ago
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larisa86 [58]

Answer:

2

Step-by-step explanation:

  1. 1 + 1 = 2
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3 years ago
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A scale displaying digits...
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3 years ago
Which represents the solution(s) of the system of equations, y = x2 – 2x – 15 and y = 8x – 40? Determine the solution set algebr
almond37 [142]

Answer:

(5, 0 )

Step-by-step explanation:

Given the 2 equations

y = x² - 2x - 15 → (1)

y = 8x - 40 → (2)

Substitute y = x² - 2x - 15 into (2)

x² - 2x - 15 = 8x - 40 ( subtract 8x - 40 from both sides )

x² - 10x + 25 = 0 ← in standard form

(x - 5)² = 0 ← in factored form, thus

x - 5 = 0 ⇒ x = 5

Substitute x = 5 into (2) for corresponding value of y

y = 8(5) - 40 = 40 - 40 = 0

Solution is (5, 0 )

3 0
3 years ago
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