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3 years ago

What is the relationship between the two variables represented in the table?

Mathematics

2 answers:

dlinn [17]3 years ago

6 0

Answer:

d positive linear association with one deviation

Step-by-step explanation:

Given is a table showing different heights of people and their show size

Height of People (cm) Shoe Size

170 8.5

172 9

174 9.5

176 10

178 11

We find that for every 2 cm increase in height there is 0.5increase in show size

from 170 to 176

Only for 176-178 we have 1 increase for 2 cm increase in height

Thus we find that both increase together hence positive relationship

But there is one deviation from 176 to 178

Hence answer is option

d positive linear association with one deviation

Zina [86]3 years ago

5 0

I think that it's - positive linear association with one deviation

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Consider the quadratic function f(x)=2x^2-8x-10

Slav-nsk [51]

Answer:

f(x) = 2x² - 8x - 10.

This is a parabola open upward (since a>0) with an axis of symmetry = -b/2a:

a) axis of symmetry: x = -(-8)/(2*2) = 8/4 = 2. Then x = 2, which is the x component of the vertex

b) for x = 2, f(x) = f(2) = - 18 (component of y of the vertex)

c) VERTEX(2, - 18)

d) DISCRIMINENT: b² - 4.a.c = 64 - 4*2*(-10) = 144

Hope this helps! :)

6 0

3 years ago

The area of a trapezoid field is 480 square m. The distance between two parallel sides is 15 m and one of the parallel sides is

Makovka662 [10]

Answer:

44m

Step-by-step explanation:

area of a trapezoid = (a+b)* h/2

since the distance between two parallel sides is 15, that would be your height

plug everything in and you get:

480 = (20 + b) *15/2

b = 44

4 0

4 years ago

What is equivalent to 8a-7-29a-8 A. 65a+80 B. -21a-15 C. 3a D. 37a+15

Reptile [31]

Answer:

B. -21a-15

Step-by-step Explanation:

$8a-7-29a-8 \\ \\ = 8a - 29a - 7 - 8 \\ \\ = - 21a - 15$

7 0

3 years ago

No links or wrong answers please!! 55 points

juin [17]

The areas of the figures are 4(x + 1), 7(d + 4) and y(y + 3)

<h3>How to determine the total areas?</h3>

The figure 1

In this figure, we have

Length = x + 1

Width = 4

The area is calculated as:

Area = Length * Width

So, we have

Area = 4(x + 1)

The figure 2

In this figure, we have

Length = d + 4

Width = 7

The area is calculated as:

Area = Length * Width

So, we have

Area = 7(d + 4)

The figure 3

In this figure, we have

Length = y + 3

Width = y

The area is calculated as:

Area = Length * Width

So, we have

Area = y(y + 3)

Hence, the areas of the figures are 4(x + 1), 7(d + 4) and y(y + 3)