Answer:
A measure of average is a value that is typical for a set of figures. Finding the average helps you to draw conclusions from data. The main types are mean, median and mode. Data is also often grouped.
Step-by-step explanation:
To find the mean add all the ages together and divide by the total number of children.
If you type all those ages into a calculator it is easy to make an error.
Answer:
for the first one do 15 divided by 10 and the second one 18 divided by 8.
Step-by-step explanation:
Answer:
x = 15.3°
Step-by-step explanation:
Trig identities:
where
- x = angle
- O = side opposite the angle
- A = side adjacent the angle
- H = hypotenuse
X+142 =3x+64
subtract x from each side
142 = 2x+64
subtract 64 from each side
142-64 = 2x
78=2x
divide by 2
78/2 = x
x=39
The number is 39
