Can someone give me a hand

Mathematics

1 answer:

crimeas [40]3 years ago

7 0

Subtract "this" from "that" ⇒ "that" - ("this")
12x² + 3xy - 5y² - (8x² + 3xy + 4y²)
12x² + 3xy - 5y² + -8x² - 3xy - 4y² Subtraction means add the opposite
Now Combine like terms:
12x² - 8x² = 4x²
3xy - 3xy = 0
-5y² - 4y² = -9y²
ANSWER: 4x² - 9y²

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VashaNatasha [74]

The ratio is supposed to be pennies to total amount of coins. The total amount of coins--including pennies--is 16. This can be proven by this equation:

5 + 6 + 5 = 16

Now you put the ratio together by taking the amount of pennies (5) and total amount of coins (16). Your ratio should look like this:

5:16

Hope I helped you out! ❤❤

4 0

3 years ago

What is −5/6÷9/10 ?<br><br> A −27/25<br><br> B −4/3<br><br> C −25/27<br><br> D −3/4

Anna [14]

Answer and Step-by-step explanation:

$\huge\boxed{~~Answer:\frac{-25}{27} ~~}$