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3 years ago

Which number is an irrational number

Mathematics

2 answers:

iragen [17]3 years ago

7 0

Square root of 15 because you don't know what know is going to go after it, unlike the others where you can guess the numbers that goes after it

Studentka2010 [4]3 years ago

3 0

Answer:

square root of 15

Step-by-step explanation:

an irrational number is a number that you cant write as a fraction. The square root of 15 is 3.87298335. This is a repeating decimal with no pattern so it is irrational because you cant write it as a fraction. Numbers like 1.25252525 is rational because it has a pattern and you can write it as a fraction.

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3 years ago

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Step-by-step explanation:

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3 years ago

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Jeffrey and Frank walk at different speeds.Frank’s walking speed can be represented by the equation y=85x, where is the time in

kolezko [41]

Answer:

Option (C)

Option (A)

Step-by-step explanation:

Part A.

Frank's walking speed can be represented by the equation.

Equation representing the speed is,

y = 85x

$\frac{y}{x}=85$

Therefore, walking speed of Frank = 85 meters per minute.

Option (C) will be the answer.

Part B.

Distance walked over the time by Jeffrey is given by the graph attached.

Equation for the speed will be,

y = $(\frac{400}{5})x$

y = 80x

Therefore, walking speed of Jeffrey = 80 meters per minute

Difference in the speed of Frank and Jeffrey = 85 - 80 = 5 meters per minute.

Jeffery walks 5 meters per minute slower than Frank.

Option (C) will be the answer.

Part (C)

Distance traveled by Frank in 16 minutes,

y = 85(16) = 1360 meters

Time taken to travel the same distance by Jeffrey will be,

1360 = 80x

x = $\frac{1360}{80}=17$ meters per minute

Option (A) will be the answer.

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3 years ago