Answer:
Between
1
and
50
, we have following numbers as composite.
{
4
,
6
,
8
,
9
,
10
,
12
,
14
,
15
,
16
,
18
,
20
,
21
,
22
,
24
,
25
,
26
,
27
,
28
,
30
,
32
,
33
,
34
,
35
,
36
,
38
,
39
,
40
,
42
,
44
,
45
,
46
,
48
,
49
}
Total
33
composite numbers.
Step-by-step explanation:
Composite numbers are those which have
3
or more factors:
Prime numbers are those which have exactly
2
factors:
There are more composite numbers than prime numbers, (can you explain why this is so?)
So it will be easier to count the prime numbers and subtract them.
There are
50
numbers FROM
1
to
50
Therefore there are
48
numbers BETWEEN
1
and
50
. which are excluded.
There are
15
prime numbers less than
50
, which are:
2
,
.
3
,
.
5
,
.
7
,
.
11
,
.
13
,
.
17
,
.
19
,
.
23
,
.
29
,
.
31
,
.
37
,
.
41
,
.
43
,
.
47
Therefore there are
48
−
15
=
33
composite numbers between
1
and
50
.
7 + 2(x - 3) + 5x
= 7 + 2x - 6 + 5x <em>distributed 2 into x - 3</em>
= 7 - 6 + 2x + 5x <em>grouped like terms together</em>
= 1 + 7x
You didn't provide an image of the steps but hopefully you can figure it out based on the information I provided.
Answer:
Part A: The survey is random and fair. Part B: It was random because the cafeteria is where they are going to change and 10th student entering isn't biased.
Step-by-step explanation:
Answer:
6y
Step-by-step explanation:
The two figure are squares with the same area
side = √area = √y^2 = y (with y>0 because a length can‘t be negative)
perimeter = side * 6 = y * 6 = 6y