Answer:
Buying items at stores, measuring something, or building something.
Y = kx²
27 = k(3²)
k = 27/9
k = 3
Answer: A
Solution: To find the mean (average) of a data you add up all the data given and divide it by the amound of seperate data there is i.e there are 4 boys, boy a is 1.3m high, boy b is 1.5m high, boy c is 1.1m high and boy d is 2m high. To find the mean(average) you add up all the data (height) 1.3m + 1.5m + 1.1m + 2m = 5.9m, 5.9 is the total, to find the mean you divide the total by the amount of values (boys), there are 4 boys so you do 5.9/4 = 1.475m, so the mean is 1.475m
Basically All the data (regions) added up is 65,000 and there are five regions (values) so you divide 65,000 by 5 which is 13,000
The numbers have been divided by 1,000 all the time.
You can find the answer simply by analyzing and testing, and finding similarities and relationships between numbers.
Hope it helped,
BioTeacher101
Firstly, $3.99 × 5 = $19.95
Second, $2.75 × 5 = $13.75
Third, $2.70 × 3 = $8.1 (Since it is just $8.1 that won't make sense so we'd add a 0 so It's $8.10.)
Then we do the last one which is 13 × $0.89 = $11.57.
So now since we are done multiplying we can add it all up.
The answer is $53.37 when we finish adding it up.
and I don't know what A number sentence is sorry :(
I took a long time typing this :< I hope this helps though! :D