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Basile [38]
3 years ago
11

If 21 is added to a number the result is 40 less than twice the number what is the number?

Mathematics
1 answer:
Karolina [17]3 years ago
7 0
If 21 is added to (+ 21) a number (x) the result (=) is 40 less than (- 40) twice the number (2x)

x + 21 = 2x - 40   Add 40 to both sides
x + 61 = 2x           Subtract x from both sides
      61 = x             Switch the sides to make it easier to read
       x = 61


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What is the greatest common factor of the following monomials: 12g^5h^4 g^5h^2
muminat

Answer:

g^5h^2

Step-by-step explanation:

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This is one way of doing it. Break down every number and every variable into a product of the simplest factors. Then see how many of each factor appear in both monomials.

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So far you see every single prime factor of each monomial.

Now I will mark the ones that are present in both. Those are the common factors.

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The greatest common factor is the product of all the factors that appear in both monomials.

GCF = g * g * g * g * g * h * h = g^5h^2

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2 years ago
If x&gt;2, then x^2-a-6 / x^2-4=
nadezda [96]
We know that x > 2 ( or : x ≠ +/- 2 )
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\frac{(x-3)(x+2)}{(x-2)(x+2)}= \frac{x-3}{x-2}


7 0
3 years ago
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