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Katyanochek1 [597]
3 years ago
14

Select all solutions to the equation (2. — 4)(x + 5) = 0.

Mathematics
1 answer:
Anettt [7]3 years ago
3 0

Answer:

At, x=-5

Step-by-step explanation:

(2-4)(x+5)=-2×0

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Determine whether or not 630 is a triangular number. start with the formula t n = n ( n + 1 ) 2 and then use the quadratic formu
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Triangular sequence = n(n + 1)/2

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n(n + 1)  = 2*630

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n = 35 is valid.

Since n is a positive whole number, that means 630 is a triangular number.

So the answer is True.
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