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Alex
3 years ago
13

Which scatterplot has a correlation coefficient closest to r = –1?

Mathematics
2 answers:
UNO [17]3 years ago
5 0

A coefficient of r = -1 is a negative so the dots would move downward as they move to the right ( higher dots are on the left side, lower dots on the right side. As the coefficient gets closer to -1 the dots form more of a straight line then being scattered across the graph.

The last graph, which is marked with the blue dot is the correct one.

Igoryamba3 years ago
4 0

Answer:

its D this person was right <3

Step-by-step explanation:

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In the diagram below, RA is parallel to ET, and RT is 21 units long. Find the length of ST
pav-90 [236]

Answer:

ST = 12 units

Step-by-step explanation:

As RA is parallel to ET, the angle in R is equal to the angle in T, and the angle in A is equal to the angle in E, so the triangle RAS is similar to the triangle SET.

If RT is 21 units, we have that RS + ST = 21 -> RS = 21 - ST

Using a rule of three with the sides of the triangle (as they are proportional), we have:

RS / ST = AR / ET

(21 - ST) / ST = 6 / 8

4 * (21 - ST) = 3*ST

84 - 4*ST = 3*ST

7*ST = 84

ST = 12 units

5 0
3 years ago
A wire 48 m long carries a current of 18 A from west to east.
Arisa [49]

Step-by-step explanation:

Given that,

The length of a wire, L = 48 m

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The magnetic field in the wire, B = 8.3\times 10^4\ T (towards south)

The magnetic force acting on the wire is given by :

F=I(L\times B)\\\\F=48\cdot18\cdot8.3\cdot10^{-4}\ N\\\\F=0.71\ N

Using right hand rule, the direction of magnetic force is upwards.

4 0
2 years ago
What is the correct answer?​
alexgriva [62]
I think it is 5.64 I hope this helps
8 0
3 years ago
What is the estimate of 1/7 x 20 and 1/9 of 82?
devlian [24]
I believe the answer to 1/7 times 20 would be 2.9 that is rounded to the nearest tenth but if your rounding to the nearest whole number it would be 3
As for 1/9 of 82 it would be 9.1 rounded to the nearest tenth and it would be 9 rounded to the nearest whole number.
3 0
3 years ago
There are 28 students in the class and 1316 blocks. If the blocks are divided equally among the students, how many does each stu
pav-90 [236]

Answer:

girl

Step-by-step explanation:

5 0
3 years ago
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