a ) relations are always functions
hope this helped
Answer:
Each litters can be represented as; x and y respectively to the 7% and the 28%
x + y =1
7x + 28y =19.6
This a simultaneous equation and can either be solved by using elimination or substitution method
Using the substitution method
eqn1, x=1-y
putting into eqn2
7(1-y)+28y =19.6
7-7y+28y=19.6
21y=12.6
y=3/5
but x=1-y
so
x=1-3/5
x=2/5
Answer:
0.778
Step-by-step explanation:
P(an Internet user posts photos that they have taken themselves/they post videos that they have taken themselves)=P(A/B)=?
According to conditional probability definition,
P(A/B)=P(A∩B)/P(B)
P(A)=0.54, P(B)=0.36, P(A or B)=0.62.
P(A or B)= P(A) +P(B) -P(A∩B)
P(A∩B)=P(A)+P(B)-P(A or B)
P(A∩B)=0.54+0.36-0.62
P(A∩B)=0.9-0.62
P(A∩B)=0.28.
P(A/B)=0.28/0.36
P(A/B)=0.778
So, the conditional probability that an Internet user posts photos that they have taken themselves, given that they post videos that they have taken themselves is 0.778.
Answer:
Step-by-step explanation:
6.
if they are similar ,then
8x+16=120
8x=104
x=13
7.
perimeter of Δ XZY=32+44+22=98
If they are similar then dilation=11/22=1/2
so perimeter of Δ BAC=98/2=49