3 years ago

Which expression is equivalent to 0.4 − (−0.7)?

Mathematics

1 answer:

Pani-rosa [81]3 years ago

6 0

0.4 + 0.7 because a - and a - equal a plus

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How to find w, x, y and z

kherson [118]

Answer:

W= 20 degrees

X= 45 degrees

Y= 115 degrees

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4 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

∴

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

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

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

$=\dfrac{3+1}{6}$

$= \dfrac{2}{3}$

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

$= \dfrac{2}{3}$

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3 years ago

Find the next five terms 512 256 128 64

Alborosie

The pattern is dividing by 2.

512, 256, 128, 64

512/2 = 256, 256/2 = 128, 128/2 = 64

64/2 = 32, 32/2 = 16, 16/2 = 8, 8/2 = 4, 4/2 = 2, ...

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3 years ago

I need help pls l will really appreciate and l will mark you the brainly !

Mademuasel [1]

Number 1. is 1/4 number 2. is 1/3 number 3. is 1/7 and 4. is

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3 years ago

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Please help triangle LMN is similar to triangle PQR. Select all angles who’s sine equals 24/25

olchik [2.2K]

I think it’s A and B because on the top where is is 24 is M and the bottom is 25 which is L

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3 years ago