Describe how u labeled the bar model and wrote a number sentence to solve the problem

Mathematics

2 answers:

Gnom [1K]3 years ago

7 0

"You draw a number line and write what you did and make up names and numbers and then do your work."

Reika [66]3 years ago

4 0

Bar Model:

It is used in elementary teaching , for solving problems of addition, subtraction, Multiplication and Division by using various tools such as rectangles, squares or any polygons .

1. Addition

4 + 2

Draw Four rectangles of same Dimension and two squares of same dimension .Dimension can be different also. Ask the children how many shapes are in all.

2. Subtraction

6-4

Draw Six Rectangles of same Dimension.Color four of them in a single color and two of them in different color . Now in another picture keep only 4 rectangles having same color and keep the two rectangles apart .Ask the children how many rectangles are differently colored.

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Consider the following time series data. Week 1 2 3 4 5 6 Value 18 12 15 10 18 14 Using the naive method (most recent value) as

fenix001 [56]

Answer:

(a) MAE = 5.20

(b) MSE = 10

(c) MAPE = 38.60%

(d) Forecast for week 7 = 14

Step-by-step explanation:

Note: See the attached excel for the calculations of the Error, Error^2, and Error %.

(a) mean absolute error

MAE = Total of absolute value of error / Number of observations considered = |Error| / 5 = 26 / 5 = 5.20

(b) mean squared error

MSE = Total of Error^2 / Number of observations considered = Error^2 / 5 = 150 / 5 = 10

(c) mean absolute percentage error (Round your answer to two decimal places.)

MAPE = Total of Error % / Number of observations considered = Error % / 5 = 193.02 / 5 = 38.60%

(d) What is the forecast for week 7?

Since the forecast is based on the naive method (most recent value), the forecast for week 7 is value for week 6. Therefore, we have:

Forecast for week 7 = 14

Download xlsx

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2 years ago

If I'm 11 years old I was born on Oct 7 2005 and it is June 20th 2017 how many days old am I.

tensa zangetsu [6.8K]

4,274 days old. Hope that helps!

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2 years ago

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Help plzzzz! pre calc question

Mumz [18]

Answer:

$\sum^{\infty}_0 {(-3)^n}$

Step-by-step explanation:

Notice that the series: 1 - 3 + 9 - 27 +... clearly has powers of the factor 3 in its terms and it is also an alternate series (the terms alternate from positive to negative). The terms are positive for $a_0, a_2, a_4, ...$ (even terms) , while the odd terms $a_1, a_3, a_5, ...$ are negative. (so most likely there should be a factor (-1) in the common ratio.