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jasenka [17]
3 years ago
9

Which scatterplot shows a negative correlation? Multiple-choice answer

Mathematics
2 answers:
kirill115 [55]3 years ago
7 0
The answer is D because the scatter plot is higher on the left side and lower on the right which make it negative. If it was positive, the scatter plot would be lower of the left and higher on the right.

Hope this helps!!
aliina [53]3 years ago
4 0
The one the points down shows a negative correlation. a positive correlation points up

your answer here is d
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Andrew is buying three different colors of tiles for his kitchen floor. he is buying 50 more purple tiles than black tiles, and
lorasvet [3.4K]
- Key -

Black tiles = x
Purple tiles = x+50
Yellow tiles = 5x

-

Total = x + x+50 + 5x = 400
⇒ 7x + 50 = 400
⇒ 7x = 400-50 = 350
⇒ x = 350/7
⇒ x = 50

Black tiles = 50
Purple tiles = 50+50 = 100
Yellow tiles = 5 x 50 = 250
4 0
3 years ago
Can anyone pls help me to solve question 2 f and g and pls provide me a explanation I’m with that questions for three days
zvonat [6]

Answer:

  f)  a[n] = -(-2)^n +2^n

  g)  a[n] = (1/2)((-2)^-n +2^-n)

Step-by-step explanation:

Both of these problems are solved in the same way. The characteristic equation comes from ...

  a[n] -k²·a[n-2] = 0

Using a[n] = r^n, we have ...

  r^n -k²r^(n-2) = 0

  r^(n-2)(r² -k²) = 0

  r² -k² = 0

  r = ±k

  a[n] = p·(-k)^n +q·k^n . . . . . . for some constants p and q

We find p and q from the initial conditions.

__

f) k² = 4, so k = 2.

  a[0] = 0 = p + q

  a[1] = 4 = -2p +2q

Dividing the second equation by 2 and adding the first, we have ...

  2 = 2q

  q = 1

  p = -1

The solution is a[n] = -(-2)^n +2^n.

__

g) k² = 1/4, so k = 1/2.

  a[0] = 1 = p + q

  a[1] = 0 = -p/2 +q/2

Multiplying the first equation by 1/2 and adding the second, we get ...

  1/2 = q

  p = 1 -q = 1/2

Using k = 2^-1, we can write the solution as follows.

The solution is a[n] = (1/2)((-2)^-n +2^-n).

 

5 0
2 years ago
A cone has a diameter of 4 cm and a height of 11 cm. What is the volume 1 point
anzhelika [568]

Answer: 46.05

Step-by-step explanation:

1/3 * 3.14 * 4 * 11 = 46.05 (rounded to the tenth)

4 0
3 years ago
A table shows a proportional relationship where k is the constant of proportionality. The rows are then switched. How does the n
andrew-mc [135]

Answer:

Read all of it it’s gonna help alot

Step-by-step explanation:

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3 years ago
Solve the equation.round to the nearest thousandths -5+2in(3x)=5
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What is the "in" for in your equation? Repost.

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