11.45... to solve it, you add all of the numbers and then divide by the total number of numbers. so 126 divided by 11
You can do part a using The Pythagoras theorem:-
30^2 = x^2 + 24^2
x^2 = 30^2 - 14^2 = (30+24)(30-24) = 324
x = 18
Answer:
144 and 18
Step-by-step explanation:
18 ×24=432÷3=144
The old mean was 51 now the mean is 42.33... (round that to 42) 51 - 42 = 9
1.c
2.d
3.b
4.a
Im sure about 1 and 4 but a little hesitant on 2 and 3 but good luck pretty sure it’s right
