Answer:
b and c, b and c are same
Step-by-step explanation:
Only a and d can be evaluated using simple substitution.
For a, integral of the square root of (x-1)dx i.e
let y = x-1
dy = dx
It becomes integral square root of ydy, ∫√ydy
which is can easily be evaluated and y is substituted back.
For d, integral of x times the square root of the quantity x squared minus 1
let y= x squared minus 1
then dy = 2xdx
dx = dy/2x
It becomes integral x times square root of y dy/2x
∫x√ydy/2x=∫√ydy/2=1/2∫√ydy which can easily be evaluated and y is substituted back
0.4kg per week. so 0.4kg x 6 weeks is 2.4kgs
Answer:
Range: 28
Mean: 12
Step-by-step explanation:
First line the numbers from small to big: 4, 6, 8, 8, 14, 32
Range is biggest minus smallest number
Mean is just the average: all the numbers' sum divided by the number of numbers
Hope this helps! ;)
Answer:
7
Step-by-step explanation:
4 ÷ 2 = 2
2 × 5 = 10
17 - 10 = 7
11:100
iwan:siobhan
if iwan gets 11% then iwan gets 89/100