2 years ago

Strictly speaking, in order for matter or energy to be conserved, a system must be _____.

Mathematics

1 answer:

Dmitry [639]2 years ago

8 0

a closed system. Hope this helps!

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which ordered pairs in the form (x, y) are solutions to the equation 3x−4y=21 ? Select each correct answer. (−1, −6) (−3, 3) (11

Valentin [98]

Answer:

see explanation

Step-by-step explanation:

To determine which ordered pairs are solutions to the equation

Substitute the x and y values into the left side of the equation and if equal to the right side then they are a solution.

(- 1, - 6)

3(- 1) - 4(- 6) = - 3 + 24 = 21 = right side ← thus a solution

(- 3, 3)

3(- 3) - 4(3) = - 9 - 12 = - 21 ≠ 21 ← not a solution

(11, 3)

3(11) - 4(3) = 33 - 12 = 21 = right side ← thus a solution

(7, 0)

3(7) - 4(0) = 21 - 0 = 21 = right side ← thus a solution

The ordered pairs (- 1, - 6), (11, 3), (7, 0) are solutions to the equation

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3 years ago

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MrRa [10]

I don’t know but if I did I’m sur it would be helpful sorry though

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2 years ago

Marley bought an action figure for $10.99, a board game for $24.95 and a book for $5.99. She paid with a $50 bill. How much chan

Crazy boy [7]

The change she received back would be $8.07

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9. If the area of square 1 is 250 units?, and the area of square 3 is

Aleks [24]

Answer:

185 units.

Step-by-step explanation:

So first, I subtracted: 250 - 120 = 130

I divided 130 by 2. I got 65.

I subtracted 65 from 250 and I got 185.

Proof it is correct:

185 - 120 = 65

AND

250 - 185 = 65

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One bushel of apples weighs 22<br> kilograms. How many kilograms<br> do 5.7 bushels weigh?

Solnce55 [7]

Answer:

125.4 kg

Step-by-step explanation:

I attached a picture of my work and I stuck it into my calculator to check it

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