1/5 x 25X - 1/5 x 75 + 9= 1/4 x 8X + 1/4 x 36
5X - 15 + 9 = 2X + 9
5X - 2X = 9 - 9 + 15
3X = 15
X= 15/3 = 5
Answer:
229.7
Step-by-step explanation:
The point of a square root is that when you square it, you get the original number.
(√229.7)^2 = 229.7
Let X be birds = ?
Y be beasts = ?
heads = 60
feet = 200
feet of birds = 2
feet of beast = 4
From data we come to know that
total animals = X+Y=60____1
total feet = 200 = 2X + 4Y_____2
from equation 1 X= 60-Y
put this value of X in equation 2
2(60-Y) + 4Y = 200
120 - 2Y + 4Y = 200
2Y= 200 - 120
2Y = 80
Y = 40
Now from value of Y we can calculate X
X + Y =60
X + 40 = 60
Or X = 20
The number of beasts is equal to 40 where as number of birds is equal to 20.
A line of best fit is a straight line that is able to fit through the points on a graph