I need help with finding the answer of 21 laps in 7 minutes

Answers

Answer 1

Answer: I'm not sure if that's what you mean, but I assume you might want to know how long did it take to make one lap if someone did 21 laps in 7 minutes.

If so, just divide 7 by 21:

7 ÷ 21 = 0.3333333... (repeating decimal) or 1/3 as a fraction.

It means that one lap took 1/3 of a minute (20 seconds).

If that's not what you meant, please specify the question :)

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What is the simplest form for 18/39.?

Answers

6/13 is the simplest form

6/13 because 18 and 39 are divisible by 3.

How would you solve -7x-4y=16

Answers

so one easy way is to make the equation equal to only one place holder so
-7x-4y=16
add 7x to both sdies
-4y=16+7x
multiply both sides by -1
4y=-16-7x
divide both sides by 4
y=-4-7/4x
subsitute values for x and get values for y
exg
if x=0 then y=-4
if x=1 then y=-5 3/7
etc

What is the fast way to simplify when you raise an exponent to another power?

Answers

if the bases are the same just add the exponents

Round the number 347 500 to the nearest 1000, 10 000 and 100 000

Answers

The rounded form of 347500 for given cases gives 348000, 350000 and 300000.

What is rounding a number to some specific place?

Rounding some number to a specific value is making its value simpler (therefore losing accuracy), mostly done for better readability or accessibility.

Rounding to some place keeps it accurate on the left side of that place but rounded or sort of like trimmed from the right in terms of exact digits.

For this case, we've got the number 347,500

Rounding it for given cases:

Case 1: Rounding it to the nearest 1000,

Rounding to nearest thousand means rounding to the digit whose value is in thousands (from 0 to 9).

This is the fourth digit from right of the decimal.

347500 = 347500.0

The fourth digit from right is 7

Rounding to it, as it has 5 next to it, the rounded version will make 7500 -> 8000

Thus, we get:

347500 -> 348000

Similarly,

Case 2: Rounding to nearest 10000

There are 5 digits in 10000, and 5th digit from right in 347500 is 4

Right to 4, there is 7, which is ≥ 5, therefore, 47500 will become 50000

Thus, we get:

347500 -> 350000

Case 3: Rounding to the nearest 100000

6th digit from right in 347500 is 3.

Right to 3 lies 4. 4 < 5 therefore 347500 will become 300000 after rounding to the nearest 100000

The digit 5 acts as a limit.

If the right sided digit to the digit where we've to round off is < 5, we keep it same and make all right sided values 0, and if the right sided digit is > 5, then we make it increase by 1 and rest of the right sided digits become 0. If the digit on right is 5, and after it there is only zeros or no value, then we round up (increase by 1, as we did in 347500 -> 34800 ) (Well there are many detailed rules of rounding)

Thus, the rounded form of 347500 for given cases gives 348000, 350000 and 300000.

Learn more about rounding digits here:

brainly.com/question/1285054

1000- 348 000
10 000- 350 000
100 000-300 000
I think this should be your answer

Find the missing length for the pair of similar figures.

Answers

So is it the first question or the first and second, because if its the second on two the its cut off on the pic. The answer for the first one is D. 4.5

I don’t which one it is?