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3 years ago

I don’t understand how to do this.

Mathematics

2 answers:

Lady_Fox [76]3 years ago

7 0

Sequence A is the answer

kherson [118]3 years ago

3 0

I believe the answer to be only sequence A.
-Hope this helps, have a nice day! :)

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Which pairs of polygons are similar? Select each correct answer

kotegsom [21]

Answer:

Left column:

1 & 2

right column:

1 & 2

pls mark me brainliest!!!

6 0

3 years ago

WILL GIVE BRAINLY PLEASE HELP!!!!!!!

marta [7]

Answer:

r² = 0.5652 < 0.7 therefore, the correlation between the variables does not imply causation

Step-by-step explanation:

The data points are;

X, Y

0.7, 1.11

21.9, 3.69

18, 4

16.7, 3.21

18, 3.7

13.8, 1.42

18, 4

13.8, 1.42

15.5, 3.92

16.7, 3.21

The correlation between the values is given by the relation

Y = b·X + a

$b = \dfrac{N\sum XY - \left (\sum X \right )\left (\sum Y \right )}{N\sum X^{2} - \left (\sum X \right )^{2}}$

$a = \dfrac{\sum Y - b\sum X}{N}$

Where;

N = 10

∑XY = 499.354

∑X = 153.1

∑Y = 29.68

∑Y² = 100.546

∑X² = 2631.01

(∑ X)² = 23439.6

(∑ Y)² = 880.902

From which we have;

$b = \dfrac{10 \times 499.354 -153.1 \times 29.68}{10 \times 2631.01 - 23439.6} = 0.1566$

$a = \dfrac{29.68 - 0.1566 \times 153.1}{10} = 0.5704$

$r = \dfrac{N\sum XY - \left (\sum X \right )\left (\sum Y \right )}{\sqrt{\left [N\sum X^{2} - \left (\sum X \right )^{2} \right ]\times \left [N\sum Y^{2} - \left (\sum Y \right )^{2} \right ]}}$

$r = \dfrac{10 \times 499.354 -153.1 \times 29.68}{\sqrt{\left (10 \times 2631.01 - 23439.6 \right )\times \left (10 \times 100.546- 880.902\right )} } = 0.7518$

r² = 0.5652 which is less than 0.7 therefore, there is a weak relationship between the variables, and it does not imply causation.

7 0

3 years ago

Clara has a purse in the shape of a trapezoid the top of the purse measures 22 cm while the bottom of the part measures 36 cm if

pashok25 [27]

The height of purse which is in trapezoid shape is 26 cm

Solution:

Clara has a purse in the shape of a trapezoid

The area of trapezoid is given by formula:

$Area = \frac{a+b}{2} \times h$

Where,

"h" is the height

"a" and "b" are the parallel sides length

From given,

Area = 754 cm

a = 22 cm

b = 36 cm

h = ?

Substituting the values in formula,

$754 = \frac{22+36}{2} \times h\\\\754 = \frac{58}{2} \times h\\\\Simplify\ the\ above\ expression\\\\754 = 29h\\\\Divide\ both\ sides\ of\ equation\ by\ 29\\\\h = 26$

Thus height of purse which is in trapezoid shape is 26 cm

8 0

4 years ago

The equation of line GH is y = 4x − 3. Write an equation of a line perpendicular to line GH in slope-intercept form that contain

butalik [34]

Answer:

The equation of this line is y = -1/4x - 7/2

Step-by-step explanation:

To find this, we need to first look for the slope. Perpendicular slopes have opposite and reciprocal slopes. Since the original line has a slope of 4, this means the new one has a slope of -1/4.

Given that slope, we can find the equation by starting with the base form of point-slope form.

y - y1 = m(x - x1)

Now put the slope in for m and the two coordinates in for (x1, y1).

y - 3 = -1/4(x - 2)

Now that we have this, solve for y for the slope-intercept form.

y - 3 = -1/4x + 1/2

y = -1/4x + 7/2

3 0

3 years ago

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MariettaO [177]

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3 years ago