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BaLLatris [955]
3 years ago
14

what number should be added to the expression x squared+2x to change it into a perfect square trinomial?

Mathematics
2 answers:
Olin [163]3 years ago
7 0
The perfect square trinomial​ (x + 1)² equals
x² + 2x + 1

Therefore the answer is to add 1 to the expression.

Good luck
Nookie1986 [14]3 years ago
3 0
You know that a perfect square trinomial is given by square of first term, twice the product of first and last terms and square of second term

So we have x^2 that is square of x, 2x that is twice the product of x*1, the second term shoulf be 1, that is square of 1

So your answer would be 1

If you try (x+1)^2 = x^2+2x+1
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3 years ago
The probability that a high school student in in the marching band is 0.47. The probability that a student plays a varsity sport
IrinaK [193]

The probability that a high school student in in the marching band is 0.47

so, P(M)=0.47

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so, P(V)=0.32

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so, we get

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so,

P(V|M)=(P(V∩M))/(P(M))

now, we can plug values

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So,

the probability that a student plays a varsity sport if we know she is in the marching band is 0.51063......Answer

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3 years ago
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