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Tpy6a [65]
3 years ago
8

Use front-end estimation to add 495 + 650 + 875. Indicate the three digits that you will add first?

Mathematics
1 answer:
malfutka [58]3 years ago
8 0
I would add 4+6+8 but to make this easier i would maybe split them
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Translate the product of a counting number and the next highest counting number into an open sentence.
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to get to the next counting number, you add one so
x+1 is the next counting number

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(x)(x+1)=
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(x^2)+(1x)=x^2+x
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Plz help i will report if your not trying to answer​
skelet666 [1.2K]
1) 1 x 10^4
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2x + 8 X-2 B In this diagram, mZACD = [?]°
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EXPLANATION:

STEPS:

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2 years ago
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4 0
3 years ago
Let X have the probability mass function P(X = −1) = 1 2 , P(X = 0) = 1 3 , P(X = 1) = 1 6 Calculate E(|X|) using the approaches
Studentka2010 [4]

Answer:

Step-by-step explanation:

From the given information:

Note that the possible values of Y are 0 and 1 because;

y = 0 if X = 0 and y = 1 if X = ±1

∴

P(Y =0) = P(X = 0) =\dfrac{1}{3}

P(Y = 1) = P(X = -1  \ or \ 1) \\ \\ = P(X = -1) + P(X = 1)

= \dfrac{1}{2}+ \dfrac{1}{6}

=\dfrac{3+1}{6}

= \dfrac{2}{3}

b)

E(|X|) = \sum |x| P(X=x) = ( 1 \times \dfrac{1}{2}) + ( 0\times \dfrac{1}{3}) + ( 1 \times \dfrac{1}{6})

= \dfrac{2}{3}

7 0
3 years ago
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