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Zinaida [17]
3 years ago
14

Pluto is 5,560,000,000 years old. Estimate the age of Pluto by writing it in the form of x×10y years, where x and y are single-d

igit numbers.
Mathematics
1 answer:
SashulF [63]3 years ago
4 0

Answer:

The age of pluto is:

5,560,000,000 years old = 5.56 × 10⁹ years old

x = 5.56

y = power of 9

Step-by-step explanation:

Pluto is 5,560,000,000 years old. Estimate the age of Pluto by writing it in the form of x×10y years, where x and y are single-digit numbers.

We write this in standard form or scientific notation.

5,560,000,000 years old = 5.56 × 10⁹ years old

x = 5.56

y = power of 9

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15 men can do a piece of work in 80 days. If 5 more men are added, how long will it take to complete same piece of work?​
tresset_1 [31]

Answer:

Step-by-step explanation:

This is an inverse proportion.

men = k / Time         So first we need to find k

k = men * Time         Substitute values

k = 15*80

k = 1200  Notice the units are man days.

Now what happens if we increase the number of men to 20? What happens to the number of days.

20 = 1200 / time          Multiply both sides by time

20*time = 1200            Now divide by 20

time = 1200/20

Answer: time = 60 days

4 0
2 years ago
I NEED HELP ASAP<br> solve for u<br> 12.8=4u
pochemuha

Answer: u= 3.2

Step-by-step explanation:

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2 years ago
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PLEASE HELP AND EXPLAIN! <br><br> A. y=60x <br> B. y=80x <br> C. y=10x<br> D. y= 6x
Rudik [331]

Answer:

C).

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When you divide this to find the unit rate you get 10/1 therefore the equation of bike b= y+10X

8 0
3 years ago
|5| |-6|=5 |-6|= =5 6 =11
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Hello,

Here in Europe, we know a nice sign"+" which means addition !!!!!!!

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4 0
3 years ago
Mario invests £2000 for 3 years at 5% per annum compound interest. Calculate the value of the investment at the end of 3 years.
Delicious77 [7]

Answer:

$2315.25

Step-by-step explanation:

Given data

Principal=  £2000

Time= 3 years

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The compound interest expression is

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A= 2000(1.05)^3

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Hence the Amount is $2315.25

7 0
3 years ago
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