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djverab [1.8K]
3 years ago
11

Two hundred billion four hundred million expanded form

Mathematics
2 answers:
Paladinen [302]3 years ago
5 0
200,400,000,000= 200,000,000,000+400,000,000
Hoped I helped:D
notka56 [123]3 years ago
4 0
A billion is a thousand million.

A billion looks like this: 1,000,000,000

So 200 billion looks like this: 200,000,000,000

Four hundred million looks like this: 400,000,000

So what had you asked for?

200,400,000,000. That's an awful lot of digits. If you had this amount of money in pounds, you'd be the richest person in the world by a country mile.
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how do you solve this problem. there are approximately 2.1 million deaths per year in country A. Express this quantity as deaths
slamgirl [31]
Well... we know that... there are 365 days in a year, unless is a leap-year, but we'll use 365 anyway

and each day has 24hrs, each hr has 60 minutes

so. let us use those ratios

\bf 2.1million\iff 2.1E6\iff 2,100,000\qquad thus
\\\\\\
\cfrac{2100000\ deaths}{1\ year}\cdot \cfrac{1\ year}{365\ day}\cdot \cfrac{1\ day}{24\ hr}\cdot \cfrac{1\ hr}{60\ minute}

so.. multiply and simplify, cancelling out any like-units atop and bottom

notice, all we do, is use the ratios, in a way, that if we need one unit to be changed, we flip the ratio

for example, to toss away "year" unit, since in the first fraction is at the bottom, then we put it on the top on the ratio, year/year  = 1, effectively cancelling the unit
5 0
3 years ago
Read 2 more answers
Thea and Eleanor are reading the same book. The graph shows the number of words Thea reads over time. Eleanor reads 225 words pe
castortr0y [4]

The answers are:

Thea reads 180 words per minute...

Eleanor reads 450 words every 2 minutes...

After 1 hour of reading, Elanor reads more words than Thea

3 0
3 years ago
Suppose that a sample of size 100 is to be drawn from a population with standard deviation L0. a. What is the probability that t
NARA [144]

Answer:

The probability that the sample mean will lie within 2 values of μ is 0.9544.

Step-by-step explanation:

Here

  • the sample size is given as 100
  • the standard deviation is 10

The probability that the sample mean lies with 2 of the value of μ is given as

                                            P(| \bar{X}-\mu|

Here converting the values in z form gives

P(-2

Substituting values

P(-2

From z table

P(z\leq 2)=0.9772\\P(z\leq -2)=0.0228\\P(-2\leq z\leq 2)=P(z\leq 2)-P(z\leq -2)\\P(-2\leq z\leq 2)=0.9772-0.0228\\P(-2\leq z\leq 2)=0.9544\\

So the probability that the sample mean  will lie within 2 values of μ is 0.9544.

5 0
3 years ago
Please help me thanks please
s344n2d4d5 [400]

Answer:

um all you do is multiply 21 as the length by 14 was the width (LxW)  

Step-by-step explanation:

=294 is your answer    I think ...

6 0
2 years ago
Am I right? If not what are the correct answers/way to solve? Thank you!
iren2701 [21]
Yes you would be correct
4 0
3 years ago
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