3 years ago

How do you estimate the sum or difference of 5/12 + 7/8

Mathematics

1 answer:

igomit [66]3 years ago

5 0

5/12 is about 6/12 or 1/2 and 7/8 is about 8/8 or 1 so it would be about 1 1/2 as ur answer

You might be interested in

jamar has an 8-foot long piece of wood that he wants to cut to build a stepstool for his tree house if each piece is going to be

lesya [120]

The greates amount of pieces he would be able to use would be 9 because 8 divided by 5/6= 9 and 3/5.the 3/5 piece is too short.

7 0

3 years ago

Read 2 more answers

Lexi Susie and Ryan are playing on online word game Royals score 100034 points Lexi scores 9348 fewer points t

11Alexandr11 [23.1K]

100,435 hope this helps you

7 0

3 years ago

G with the definition of covariance, prove cov[(ay − b),(cy − d)] = accov(x, y ), where x, y are random variables and a, b, c, d

____ [38]

By definition of covariance,

$\mathrm{Cov}(X,Y)=\mathbb E[(X-\mathbb E[X])(Y-\mathbb E[Y])]$

$\mathrm{Cov}(X,Y)=\mathbb E[XY-\mathbb E[X]Y-X\mathbb E[Y]+\mathbb E[X]\mathbb E[Y]]=\mathbb E[XY]-\mathbb E[X]\mathbb E[Y]$

We have

$\mathbb E[(aX-b)(cY-d)]=\mathbb E[acXY-adX-bcY+bd]$

$=ac\mathbb E[XY]-ad\mathbb E[X]-bc\mathbb E[Y]+bd$

$\mathbb E[aX-b]=a\mathbb E[X]-b$

$\mathbb E[cY-d]=c\mathbb E[Y]-d$

$\mathbb E[aX-b]\mathbb E[cY-d]=ac\mathbb E[X]\mathbb E[Y]-ad\mathbb E[X]-bc\mathbb E[Y]+bd$

Putting everything together, we find the covariance reduces to

$\mathrm{Cov}(aX-b,cY-d)=ac(\mathbb E[XY]-\mathbb E[X]\mathbb E[Y])=ac\mathrm{Cov}(X,Y)$

as desired.

5 0

3 years ago

Find the sum of the first 8 terms of the sequence. 1, -3, -7, -11, ...

Darya [45]

$1+(-3)+(-7)+(-11)+(-15)+(-19)+(-23)+(-27) = \\1-3-7-11-15-19-23-27 = \\-35-19-23-27= \\-35-19-50=\boxed{-104}$

Hope this helps.

r3t40

4 0

3 years ago

Simplify the expression 2/3÷(-4)-[1/6-8/6]

mash [69]

Answer:

Step-by-step explanation:

⇒2/3 ÷ (-4) - [ 1/6 - 8/6]

⇒2/3 / (-4) - [- 7/6]

⇒-1/6 + 7/6

⇒6/6

⇒1

4 0

3 years ago

How do you estimate the sum or difference of 5/12 + 7/8​

How do you estimate the sum or difference of 5/12 + 7/8