3)
26 + ( 3x + 1 ) = 180
27 + 3x = 180
3x = 180 - 27
3x = 153
x = 153/3
x = 51
___________________
4)
( 4x + 1 ) + ( 3x + 4 ) = 180
7x + 5 = 180
7x = 180 - 5
7x = 175
x = 175/5
x = 25
Answer:
B. 2 5/12
Step-by-step explanation:
2 3/4 - 1/3 = (2 +9/12) -(4/12) = 2 +(9-4)/12 = 2 5/12
Answer:
5:1
Step-by-step explanation:
On a die, the possible outcomes are 1,2,3,4,5,6 = 6 possible outcomes
The outcomes that are not a 6 are 1,2,3,4,5 = 5 outcomes
The outcomes that a 6 can occur is 1
The odds are the ways the event can occur with the number of ways the event cannot occur.
not rolling a 6: rolling a 6
5:1
Answer:
The correct option is (B).
Step-by-step explanation:
In case of a blind experiment the participants are divided into groups: one is the treatment group and the other is a control group.
The treatment group are provided with the treatment whereas the control group is not provided with the treatment instead they are given placebos.
To keep the experiment bias free the participants are not informed of the group they belong.
In this case an experiment is conducted to determine the effect of music on studying.
One groups studies with music whereas the other studies without music.
But here the students know which group they belong as they can hear the music playing in the background. This effects the results of the experiment.
Thus, the experiment is not blind.
The correct option is (B).
Answer:
1/2
Step-by-step explanation:
When we roll a die, we can get 1,2,3,4,5,6
There are 6 possible outcomes
The even numbers are 2,4,6
There are 3 ways to get an even number
P(even number) = number of evens/ total outcomes
= 3/6
=1/2
