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Korvikt [17]
3 years ago
10

Suppose that there were a negative correlation between the variables a and b. If b is 90 when a is 8, which of these is most lik

ely to be the value of b when a is 16?
A. 105
B. 120
C. 90
D. 45
Mathematics
2 answers:
Anastaziya [24]3 years ago
3 0
I think this is D.45 but not to sure about that
Vinvika [58]3 years ago
3 0

Answer:

45 is correct

Step-by-step explanation:

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A variable needs to be eliminated to solve the system of equations
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Answer:

The first step would be to subtract the two equations.

3 0
3 years ago
What is the perimeter of a polygon with verticals at (-1, 3) , (-1, 6) , (2, 10) , (5, 6) , and (5, 3)
Marat540 [252]

Answer:

22 units

Step-by-step explanation:

The perimeter of a polygon is said to be the sum of the length of it's sides.

From the question, we have 5 vertices. This means the polygon is a pentagon. It's given vertices are

A = (−1, 3)

B = (−1, 6) ​

C = (2, 10)

D = (5, 6) ​​

E = (5, 3) ​

To find the distance between two points, we use the formula

d = √[(y2 - y1)² + (x2 - x1)²]

Between A and B, we have

d(ab) = √[(6 - 3)² + (-1 --1)²]

d(ab) = √(3²) + 0

d(ab) = √9 = 3

Between B and C, we have

d(bc) = √[(10 - 6)² + (2 --1)²]

d(bc) = √[4² + 3²]

d(bc) = √(16 + 9) = √25 = 5

Between C and D, we have

d(cd) = √[(6 - 10)² + (5 - 2)²]

d(cd) = √[(-4)² + 3²]

d(cd) = √(16 + 9) = √25 = 5

Between D and E, we have

d(de) = √[(3 - 6)² + (5 - 5)²]

d(de) = √(-3)² + 0

d(de) = √9 = 3

Between E and A, we have

d(ea) = √[(3 - 3)² + (5 --1)²]

d(ea) = √[0 + (6)²]

d(ea) = √36 = 6

The perimeter is given as

d(ab) + d(bc) + d(cd) + d(de) + d(ea) =

3 + 5 + 5 + 3 + 6 = 22 units

7 0
3 years ago
In a survey of 200 employees, 65% agreed that the management of the cafeteria should be changed. If the confidence interval is 9
Kruka [31]

Answer:

c.136

Step-by-step explanation:

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3 years ago
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Sedaia [141]

Answer:

Step-by-step explanation:

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8 0
3 years ago
Los lados de un triángulo son x, (x + 1) y (2x − 1) y su área es x√10 ¿Cuál es el valor de x?​
ANEK [815]
(X+1) y (2x-1) this is the answer
6 0
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