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storchak [24]
3 years ago
13

Plz help meeeeeeeeeeeeee

Mathematics
1 answer:
Eva8 [605]3 years ago
4 0

Answer:

12. 30

13. 3

Step-by-step explanation:

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Please help me answer this.
saul85 [17]

Answer:

it's not 16/,13 ; )

Step-by-step explanation:

5 0
2 years ago
Explain why you cannot factor the trinomial x(to the power of 2)−12x+6
Vladimir [108]

Answer:

See below

Step-by-step explanation:

You cannot find two whole number integers that give a sum of -12 and a product of 6.

-1 + -11 = -12, but (-1)(-11) = 11, which isn't 6

-2 + -10 = -12, but (-2)(-10) = 20, which isn't 6

...and so on...

4 0
2 years ago
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Combine like terms 9y−4
alexgriva [62]

Answer: i dont this you can combine like terms for this question because none of these have the same variable or anything.

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2 years ago
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A coin contains 1.25 grams of nickel and 3.75 grams of copper, for a total weight of 5 grams. What percentage of the metal in th
otez555 [7]
So,

To find the percentage that the copper comprises, just divide the amount of copper by the total amount of metal in the coin.  In this case, we will change the denominator so that it is 100, which can easily be converted into a percentage, which is really just a fraction out of 100.

\frac{3.75}{5} = \frac{7.50}{10} = \frac{75}{100}

75%

75% of the metal in the coin is copper.
7 0
3 years ago
Which of the following is a valid exclusion for the algebraic expression
zheka24 [161]

Answer:

4a^2b-8ab^2

Step-by-step explanation:


3 0
3 years ago
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