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Harlamova29_29 [7]
2 years ago
14

Determine the values of aaa and kkk when 299,790,000299,790,000 is written in scientific notation. Enter aaa and kkk, separated

by commas.
Mathematics
1 answer:
wolverine [178]2 years ago
7 0

The values of a and k are 3.0 and 8

<h3>Scientific notations</h3>

Scientific notation is used to represent numbers in standard form

The scientific notation of a number is represented as:

a \times 10^k

The number is given as:

299,790,000

So, we have:

a \times 10^k = 299790000

Rewrite the number as follows:

a \times 10^k = 2.9979 \times 10^8

Approximate the number

a \times 10^k = 3.0 \times 10^8

By comparison:

The values of a and k are 3.0 and 8

Read more about scientific notations at:

brainly.com/question/1767229

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Answer:

50

Step-by-step explanation:

Given

there is 1 water station at every 0.3 KM

If there are n water stations at every 0.3 KM

then KM covered by them = n*0.3 = 0.3n

given that total KM covered is 15 km

Thus,

0.3n = 15

=> n = 15/0.3 = 50

Thus, there are 50 water stations.

7 0
3 years ago
Winnie wrote the following riddle.I am a number between 60 and 100.My ones digit is two less than my tens digit.I am a prime num
Kazeer [188]

Answer:

79

Step-by-step explanation:

60<xy<100

y -2 =x


if it is prime

y cannot be even

so y could be      1,3,5,7,9

x would then be 9,1,3,5,7

but to be between 60 and 100

x must be 7 or 9

so the number must be 79 or 57

57 is not prime so

the number is 79

5 0
3 years ago
Let X and Y be random variables with the following joint moment generating function: M_{X,Y}(s,t)=0.1+0.2e^s+0.3e^t+0.4e^{s+t}
MA_775_DIABLO [31]

We obtain the joint PMF directly from the joint MGF:

M_{X,Y}(s,t)=0.1+0.2e^s+0.3e^t+0.4e^{s+t}

\implies\mathrm{Pr}[X=x,Y=y]=\begin{cases}0.1&\text{for }x=y=0\\0.2&\text{for }x=1,y=0\\0.3&\text{for }x=0,y=1\\0.4&\text{for }x=y=1\\0&\text{otherwise}\end{cases}

Then

\mathrm{Pr}[X=Y]=\mathrm{Pr}[X=Y=0]+\mathrm{Pr}[X=Y=1]=0.1+0.4=\boxed{0.5}

8 0
3 years ago
marie has $625 in a personal bank account, and then withdraws $14 per week. alex has $19 in a personal bank account, and then de
Margaret [11]

Answer:

You can use Unit rate to find the answer. (Divide)

Step-by-step explanation:

4 0
3 years ago
(y=179x<br> (y=105x+2046<br> Solve using elimination method and graph plss <br> Helpppp
elixir [45]

Answer:

x= \frac{2046}{74}\\\\y = \frac{366234}{74}

Step-by-step explanation:

y = 179x\ ----- ( 1 ) \\\\y= 105x + 2046 \ ----- (2)\\\\

(1) => y - 179x = 0 \ ----- ( 3)\\\\(2) => y - 105x = 2046 \ ------ ( 4)

( 3 ) - ( 4) =>\\\\(-179x +105x ) = 0 - 2046\\\\-74x = -2046\\\\x = \frac{2046}{74}

Substitute \ x \ in ( 1 )\\\\y = 179x \\\\y = 179 \times \frac{2046}{74} = \frac{366234}{74}

6 0
3 years ago
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