Why is multiplying by powers of 10 easy? (30 pts) please answer thank u

Mathematics

1 answer:

vlada-n [284]3 years ago

8 0

Answer:

Any number by ten is the number and add how many 0's there are in an equation at the end. If you are doing it with decimals you would move one space to the right or left depending if it i negative or positive.

Step-by-step explanation:

If you times a number by ten and go the long way it will still equal up to the same number if you just add the amount of zero's it has in the equation to the end. Example's: 10x10=100 & 11x10=110.

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Consider that 1 inch = 2.54 centimeters. Which three statements are true for converting 18 feet to centimeters?

serg [7]

Answer:

There are 548.64 cm in 18 feet.

Step-by-step explanation:

We know that, 1 inch = 2.54 centimeters.

We need to convert 18 feet to centimeters

Also, 1 foot = 12 inch

Firstly we will convert 18 feet to inch.

18 feet = 12 × 18 inch

= 216 inch

Now to convert 18 feet to centimeters, multiply 216 inch by 2.54 cm as follows :

216 inch = 2.54×216 centimeters

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Hence, there are 548.64 cm in 18 feet.

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Answer:

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Step-by-step explanation:

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Alicia can row 6 miles downstream in the same time it takes her to row 4 miles upstream.She rows downstream miles/hour faster th

disa [49]

Answer:

Option D. 9 mi/hr downstream, 6 mi/hr upstream

Step-by-step explanation:

The complete question is

Alicia can row 6 miles downstream in the same time it takes her to row 4 miles upstream. She rows downstream 3 miles/hour faster than she rows upstream. Find Alicia’s rowing rate each way

Define the variables

Let

x -----> Alicia's rowing rate downstream in miles per hour

y ----> Alicia's rowing rate upstream in miles per hour

we know that

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we have

$\frac{6}{x}=\frac{4}{y}$