Answer: 17
Step-by-step explanation: ok so first to find the mean you add all the numbers then divide by how many numbers there is so basically 18 plus 15 plus 20 plus 15 then divide by 4 because there is 4 numbers and once you do that it is 17
22+2/2=23
22 is whole number
one plus sign
and 2/2 is the fraction
4 digits are 2
we know that
<u>Unit Rate</u> is the ratio of two measurements in which the second term is one
so
to find the unit rate divide
by 

therefore
<u>the answer is</u>
The unit rate is 
Answer:
<h2> ¹/₁₈ = 0,0(5)</h2>
Step-by-step explanation:
6•6 = 36 - all possibilities in a roll of two dices
3&4 or 4&3 - two possibilites
Probability that one of the dice will be a 3 and the other a 4:

Answer:
147
Step-by-step explanation:
Sequence 1:
7 × 1 = 7
7 × 2= 14
7 × 3 = 21
7 × 5 = 35
7 × 7 = 49
Sequence 2:
21 × 1 = 21
21 × 2 = 42
21 × 3 = 63
21× 5 = 105
21 × 7 = 147