17 - 6 x 5 + 12
=17 - 30 + 12
=29 - 30
= - 1
Answer:
x = 5
Step-by-step explanation:
6/12 = 9/(2x+8)
2x+8 = 18
2x = 10
x = 5
Answer:
Step-by-step explanation:
a=12, b=10, c=?
a²+b²=c²
Using pythagorean theorem you can find that c= 2√61
Answer:
58
Step-by-step explanation:
the mean is adding up all the numbers, then dividing by the amount of the numbers.
add up all the numbers:
13 + 13 + 14 + 18 + 22 = 80
the mean is 23.
so you need to back track:
23 * 6 = 138
138 - 80 = 58