Diego can type 140 words in 4 minutes. at this rate how long will it take him to type 385 words? how many words can he type in 15 minutes

11 minutes will it take him to type 385 words.

525 words can he type in 15 minutes

Step-by-step explanation:

Unit rate can be expressed as a quantity of 1, such as 3 feet per second or 6 miles per hour.

As per the statement: Diego can type 140 words in 4 minute.

If      

140 words = 4 minutes

then;

1 words = minutes

Unit rate per words = minutes

To find how long will it take him to type 385 words.

                                  =

therefore, 11 minutes will it take him to type 385 words

Now, to find how many words can he type in 15 minutes.

Calculate unit rate per minutes:

unit rate per minute = words.

Number of words =

                              = words

Therefore, 525 words can he type in 15 minutes

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

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factorizing, we get that:

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then, the solutions are: or

nothing extraneous has been found!