Answer:
n = 30
Step-by-step explanation:
Given that,
The length of the ribbon is 4.5 m
Each piece is 15 cm long
We know that, 1 m = 100 cm
⇒ 4.5 m = 450 cm
Let there are n pieces. It can be calculated by dividing total length and each of each piece as follows :
![n=\dfrac{450\ cm}{15\ cm}\\\\n=30](https://tex.z-dn.net/?f=n%3D%5Cdfrac%7B450%5C%20cm%7D%7B15%5C%20cm%7D%5C%5C%5C%5Cn%3D30)
There are 30 pieces.
Answer:50 degress 2/2
Step-by-step explanation:
2/2
Answer:
5.4
Step-by-step explanation:
See the attached picture for explanation.
Answer:
9
Step-by-step explanation:
The mean squared error (MSE)of a set of observations can be calculated using the formula :
(1/n)Σ(Actual values - predicted values)^2
Where n = number of observations
Steps :
Error values of each observation (difference between actual and predicted values) is squared.
Step 2:
The squared values are summed
Step 3:
The summation is the divided by the number of observations
The difference between the actual and predicted values is known as the ERROR.
(1/n)Σ(ERROR)^2
n = 3
Error = +3, +3, - 3
MSE = (1/3)Σ[(3)^2 + (3)^2 + (-3)^2]
MSE = (1/3) × [9 + 9 + 9]
MSE = (1/3) × 27
MSE = 9
Answer:
C =131.88 cm
Step-by-step explanation:
We can find the circumference of a circle by using
C = pi * diameter
C = 3.14 * 42
C =131.88 cm