To find the average, you have to add all the numbers up and then divide by the amount of numbers you added together.
Equation: (86+87+91+x)/4=98
Solve for x:
86+87+91+x=98*4
264+x=392
x=392-264
x=128
The fourth number is 128
Pythagorean theorem: a^2 + b^2 = c^2
The hypotenuse is always the c in the equation.
If the two side lengths they gave you are not the hypotenuse, then enter
4.5^2 + 5.6^2 in the calculator, then find the square root of that. :-)
Answer:
i = 14:25
ii = 25:39
Step-by-step explanation:
i)
- there are 14 boys to the number of girls
ii)
- there are 25 girls. to find the total amount of players, you add the two genders together. altogether there are 39 people. 25 of them are girl. 25 girls to 39.