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3 years ago

Random khan question and I haven't done this in a year, I'm struggling.

Mathematics

1 answer:

Stolb23 [73]3 years ago

8 0

Answer:

Add maybe

Step-by-step explanation:

add the 500+400+200 try that hope it helps have a great day

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For which values is the graph decreasing? Check all

Alexeev081 [22]

Answer:

between x=-1.5 and x = 0

between x = 0 and x = 1.5

Step-by-step explanation:

For the interval -1.5 < x < 1.5, we can see that the slope is negative (i.e from top left to bottom right). Hence it can be said that the graph is decreasing during this interval.

For the other parts of the graph (as shown) the slope is positive (i.e from bottom left to top right). in those areas, the graph is increasing.

5 0

3 years ago

Read 2 more answers

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

A circle has an equation (x+2)2+(y−5)2=64. What is 34 of its area.

skad [1K]

Answer:

3/4 of the area of the circle is of $48\pi$ squared units.

Step-by-step explanation:

Equation of a circle:

The equation of a circle has the following format:

$(x - x_0)^2 + (y - y_0)^2 = r^2$

In which the center is $(x_0,y_0)$ and r is the radius.

Area of a circle:

The area of a circle of radius r is given by:

$A = \pi r^2$

Circle (x+2)² + (y-5)² = 64

Comparing with the standard equation, we have that:

$r^2 = 64$

Area of the circle:

$A = \pi r^2 = 64\pi$

What is 3/4 of its area?

$\frac{3A}{4} = \frac{3*64\pi}{4} = 3*16\pi = 48\pi$

3/4 of the area of the circle is of $48\pi$ squared units.

8 0

3 years ago

If a translation maps point (3, 2) to (4, 5); or T: (3, 2) —>(4,5), indicate the image for (2,4).

Colt1911 [192]

Answer:

(5,3)

I'm not soooo sure I'm %50 sure

8 0

3 years ago

PLEASE HELP Michaels home is 12 feet below sea level in his mothers home is 12 feet above sea level Michael says their homes are

nexus9112 [7]

Answer:

Yes, he is correct

Step-by-step explanation:

Represent Michael's home with M and his mother's with H

So, we have:

$M = 12\ ft (below)$

$H = 12\ ft (above)$

Required

Is Michael correct?

First, we get the numeric values of the given parameters.

Below sea level means negative:

So:

$M = 12\ ft (below)$ will be rewritten as:

$M = -12$

Above sea level means positive:

So:

$H = 12\ ft (above)$ will be rewritten as:

$H = 12$

Two numbers $A\ and\ B$ are said to be opposite if $A + B=0$

For Michael to be correct:

$M + H = 0$

Substitute values for M and H

$-12 + 12 = 0$

$0 = 0$

<em>Hence, Michael is correct</em>

3 0

3 years ago