Answer:
Set builder notation: {a | a ≥ -21}
Interval notation: [-21, ∞)
Step-by-step explanation:
A set represents a collection of things, objects, or numbers. A set builder notation is in the form y = {x | x is an odd number between 8 and 10}, which means y contains all the odd numbers between 8 and 10.
Interval notation is a way to define a set of numbers between a lower limit and an upper limit using end-point values. for example (8, 20) means numbers between 8 and 20.
Given -3a-15≤-2a+6; solving :
-3a - 15 ≤ -2a + 6
-3a + 2a ≤ 6 + 15
-a ≤ 21
dividing through by -1:
a ≥ -21
The solution is:
Set builder notation: {a | a ≥ -21}
Interval notation: [-21, ∞)
We know that:
Epg=mgh
Epg=25kg*9,81m/s²*3m
Epg=735,75J
Answer:
(a) 72 degrees
(b) 216 degrees
Let em know if you don't get how I answered either.
Step-by-step explanation:
So, to go all the way around is 360 degrees since there are 360 degrees. that means it turns 5 times for the beginning cd to be at the start again. So in 5 equal turns it goes 360 degrees. We want to know how much 360 is divided into 5 groups, or 360/5 = 72.
You can think of it this way, if it turns 72 degrees five times, it will have gone a full 360. that answers a though, each switch to another CD is 72 degrees.
b is asking how many degrees is it to go from 1 to 4. so how many movements is that? 1 to 2, 2 to 3 then 3 to 4. So 4. could have done 4-1 of course. anyway. 3 movements each 72 degrees is 72*3 = 216.
