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4 years ago

21. What is the simplified form of the following expression? (1 point)

Mathematics

1 answer:

Andre45 [30]4 years ago

5 0

Answer (6y – 42)

6(y – 7)

Explanation:

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Evaluate -a - 12a 2 for a = -1

Serhud [2]

The answer is -11
You put "-1" in place of all the "a"s and get
-(-1) - 12(-1)^2
-(-1) is just 1, and (-1)^2 is "1"
We are then left with 1-12(1) which is 1-12 which is -11

6 0

3 years ago

Can someone please help me? If it is correct ai will give Brainliest<br> Thank you

Rasek [7]

9514 1404 393

Answer:

Step-by-step explanation:

Collecting terms of the expression, we have ...

x + 0.1x = x(1 +0.1) = 1.1x

In words, adding 10% is the same as multiplying the value by 1.1. Choice A is appropriate.

7 0

3 years ago

An analyst must decide between two different forecasting techniques for weekly sales of roller blades: a linear trend equation a

Amiraneli [1.4K]

Answer:

Following are the responses to the given question:

Step-by-step explanation:

Mean Absolute Deviation MAD

$MAD = \sum_{i=1}^{n} \frac{\left | actual_{i}-forecast_{i} \right |}{n}$

Mean squared error

$MSE=\Sigma^{n}_{i=1} \frac{(Actual_i - Forecast_i)^2}{(n - 1)}$

linear trend equation is $Ft = 124 + 2t$

$MAD = \frac{23}{10} = 2.3\\\\MSE = \frac{91}{9}= 10.11\\\\$

Naive method

$MAD = \frac{36}{9} = 4\\\\MSE = \frac{202}{8}=25.25\\\\MAD (Naive) = 4\\\\MAD (Linear) =2.3\\\\MSE (Naive)=25.25\\\\MSE (Linear)=10.11\\\\$

Please find the attached file.

7 0

3 years ago

Solve for x<br><br> 1/5(2/3x - 1/2) > x + 1/3

taurus [48]

Answer:

x<-11/26

Step-by-step explanation:

1/5(2/3x-1/2)>x+1/3

2/15x-1/10>x+1/3

2/15x-x>1/3+1/10

-13/15x>11/30

x<(11/30)(-15/13)

x<-11/26

3 0

2 years ago

Read this and answer this for me Thanks <3

Norma-Jean [14]

Answer:

The answer is 1st point

Step-by-step explanation:

(12x²+4x-5)-(9x²-9x+1)

= 12x²+4x-5-9x²+9x-1

= 3x²+13x-6

6 0

3 years ago