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Dmitrij [34]
3 years ago
7

What is the mean absolute deviation of Robin’s scores?

Mathematics
2 answers:
My name is Ann [436]3 years ago
8 0

Answer:

Step-by-step explanation:

5.2

pantera1 [17]3 years ago
5 0

Answer:5.2

Step-by-step explanation:

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By how much does the dependent variable change in response to a change of 1 unit of the independent variable?
dalvyx [7]

Answer: C) 5

--------------

x = independent variable, y = dependent variable

Assuming this is a linear function, each increase of x by 2 leads to y going up by 10. So 10/2 = 5 is the unit increase each time x bumps up by 1.

-------------------

An alternative is to use the slope formula to get

m = (y2 - y1)/(x2 - x1)

m = (25 - 15)/(4 - 2)

m = 10/2 <--- this expression shows up again

m = 5 <---- leading to the same answer as before

So we see that the slope formula is a more drawn out method to finding the answer.

6 0
3 years ago
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Use Cramer's Rule to solve the following system: –2x – 6y = –26 5x + 2y = 13
andriy [413]
\bf \begin{cases}&#10;-2x-6y&=-26\\&#10;\quad 5x+2y&=13&#10;\end{cases}\stackrel{\textit{determinant of the coefficients}}{D=&#10;\begin{bmatrix}&#10;-2&-6\\5&2&#10;\end{bmatrix}}\implies (-4)-(-30)&#10;\\\\\\&#10;D=-4+30\implies \boxed{D=26}\\\\&#10;-------------------------------\\\\

\bf x=\cfrac{D_x}{D}\implies x=\cfrac{&#10;\begin{bmatrix}&#10;\boxed{-26}&-6\\\\ \boxed{13}&2&#10;\end{bmatrix}}{D}\implies x=\cfrac{(-52)-(-78)}{26}&#10;\\\\\\&#10;x=\cfrac{-52+78}{26}\implies x=\cfrac{26}{26}\implies \boxed{x=1}\\\\&#10;-------------------------------\\\\&#10;y=\cfrac{D_y}{D}\implies y=\cfrac{&#10;\begin{bmatrix}&#10;-2&\boxed{-26}\\\\ 5&\boxed{13}&#10;\end{bmatrix}}{D}\implies y=\cfrac{(-26)-(-130)}{26}&#10;\\\\\\&#10;y=\cfrac{-26+130}{26}\implies y=\cfrac{104}{26}\implies \boxed{y=4}
4 0
3 years ago
hello again I need to find an equation to find the long side of the triangle. but this time only the hypotenuse is given. brainl
Hunter-Best [27]

Answer:

The answer to your question is Long = 10.39

Step-by-step explanation:

Data

hypotenuse = 12

long = ?

Process

1.- To find Long, we must use the trigonometric functions sine or cosine.

If we use sine, we use the 60° angle

If we use cosine, we use the 30° angle

a) sin 60 = long / hypotenuse

   Long = hypotenuse x sin 60

   Long = 12 x sin 60

   Long = 10.39

b) cos 30 = Long / hypotenuse

   Long = hypotenuse x cos 30

   Long = 12 x cos 30

  Long = 10.39

3 0
3 years ago
Read 2 more answers
A,B,C,or D? please help
barxatty [35]

Answer:

A

Step-by-step explanation:

Hope this helps

stay safe:)

brainliest is appreciated :)))

6 0
3 years ago
2 4/5 divided by 2/15
REY [17]

Answer:

21

Step-by-step explanation:

3 0
3 years ago
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