There's 5280 feet in a mile. 5280x16=84,480 feet an hour. Then divide by 60 to get feet per minute. 84,480/60=1408 feet a minute. This is not one of the answers but this is correct. 528 feet a minute is 6 miles per hour. 5280 feet a minute is 60 miles per hour. The answer would have to be in between.
A) 186 minutes
b) 3 tyres
We can take 124 and divide it by 4 to see how long it takes him to fit 1 tyre, then use that number to sort the rest out.
124/4 = 31
It takes Liam 31 minutes to fit one tyre to a lorry.
To fit 6 tyres, it takes 6 x 31 = 186 minutes
If he works for 93 minutes,
93/31 = 3 tyres
Please let me know if you have any questions.
Do you mean scientific notation?
If so,
A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.
In order to write a number in scientific notation, I suggest you place the tip of your pencil right after the last digit in the number.
Then go backwards, counting each jump to the next number (this will be your exponent number).
You will go backwards until you reach your first NON-ZERO digit, which is where you will place the decimal point.
Multiply the decimal you now have by 10 (multiplying by 10 applies every time!) and then to the power of however many spaces you went back.
Answer:
(a)Discrete Variable (Option D)
(b)Continuous Variable (Option C)
Step-by-step explanation:
A Discrete Variable is a variable that can only take on a finite number of values. All qualitative variables are discrete.
A continuous variable on the other hand is a variable that can take on values over a non-empty range of the real numbers.
(a)The number of people in a restaurant is a discrete variable and the possible values are x=0,1,2,...,300. You cannot have 0.5 persons in a restaurant.
(b)The amount of snowfall is a continuous variable and the values of the amount of snowfall, s could take on any real value greater than or equal to zero.
The answer to this problem is A