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3 years ago

Explain how to write 2.14 * 10 ^ - 5 in standard form by moving the decimal point .

Mathematics

1 answer:

Greeley [361]3 years ago

6 0

Answer:

0.0000214

Step-by-step explanation:

To convert the given question to decimal point we will have to move the point by the number in the standard form...how

2.14*10^-5

It means that the point will be moved to the left in five times...

It gives 0.0000214

In some cases we might just have to move the point to the right if only the 10^-5 is just 10^5

Always ensure to be cautious of signs

The final answer is 0.0000214

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Wilma drove at an average speed of 60 mi/h from her home in City A to visit her sister in City B. She stayed in City B 15 hours,

Triss [41]

Answer:

574.8 miles

Step-by-step explanation:

Given:

An average speed of Wilma from City A to City B = 60 miles per hour

She stayed in City B 15 hours.

An average speed of Wilma from City B to City A = 35 miles per hour.

Whole time taken including 15 hours stay in city B = 41 hours

Question asked:

How many miles is City A from City B ?

Solution:

Total time taken including 15 hours stay in city B = 41 hours

Total time taken on the trip excluding stay in city B = 41 - 15 = 26 hour

Let time taken during from city A to city B = $x$

Time taken during from city B to city A = $26-x$

As distance traveled from city A to city B is equal to distance traveled from city B to city A:-

And by using : $Distance=speed\times time$

Distance traveled from city A to city B = Distance traveled from city B to A

$speed\times time$ = $speed\times time$

$60\times x=35(26-x)\\60x=910-35x$

Adding both sides by $35x$

$95x=910$

Dividing both sides by 95

$x=9.58\ hours$

Distance traveled from city A to city B = $speed\times time$

= 60 $\times$ 9.58

= 574.8 miles

Therefore, there are 574.8 miles from City A to City B.

3 0

3 years ago

a man sold a car for Rs.7,20,000 after spending some money for its maintenance at a profit of 20%.If he purchased the car at Rs.

TiliK225 [7]

600,000
500,000+20%= 600,000

5 0

3 years ago

All I need is number two

Arturiano [62]

3/5 of a gallon or .06

Explanation:

To solve you need to divide the three gallons of paint by the 5 cans. This can be solved in two ways.

Way 1 (fraction)

This is the easiest way, you simply put the first number in the equation on top and the second on the bottom, then simplify if possible. When we do this we get 3/5 and it can’t be simplified so we leave it as the fraction three fifths of 3/5.

Way 2 (decimal)

This way you divide 3 by 5, you can use long division to do this but it takes a long time. The answer is 0.6.

I hope this helps. Please mark me the Brainliest, it’s not necessary but I put time and effort into every answer and I would appreciate it greatly. Have a great day, stay safe and stay healthy ! :)

4 0

3 years ago

Read 2 more answers

Find the greatest common factor of 80 and 20.

Nonamiya [84]

Answer:

Step-by-step explanation:

The factors of 20 are 1, 2, 4, 5, 10, and 20. The factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, and 80. You can see that they have some of the same factors, but the greatest they share is 20

5 0

3 years ago

Find the volume of the prism:

aleksandr82 [10.1K]

Answer:

3cm x 7cm x 3cm = 63 cm^3

Step-by-step explanation:

7 0

3 years ago