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Scilla [17]
2 years ago
7

Simplify by combining like terms: 5a + 2b - 3a + 4 Help please

Mathematics
2 answers:
Naddika [18.5K]2 years ago
8 0

To simplify, we can only combine what are called our like terms.

In this problem, we just have

a pair of like terms in our a terms.

Let's start by combining our a terms.

5a - 3a simplifies to 2a.

So we have 2a + 2b + 4 which is our final answer.

disa [49]2 years ago
4 0

Answer:

2a + 2b + 4

Step-by-step explanation:

5a + 2b + -3a + 4

5a + -3a

2a + 2b + 4

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Dimensional analysis: How many atoms are in a kilogram of silver, if there are 6.02 x 10^23 atoms per mole and silver weighs 107
kondor19780726 [428]

Answer:

5.58×10²⁴ atoms.

Step-by-step explanation:

From the question given above, the following data were obtained:

1 mole of silver = 107.9 g

Number of atoms in 1 mole of silver = 6.02×10²³ atoms.

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Next, we shall convert 1 kg of silver to grams (g). This can be obtained as follow:

1 kg = 1000g

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Finally, we shall determine the number of atoms in 1 kg (i.e 1000 g) of silver as follow:

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Thus, a kilogram of silver contains 5.58×10²⁴ atoms.

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3 years ago
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If x -9 is a factor of x^2 -5 -36, what is the other factor?
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