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Oksi-84 [34.3K]
1 year ago
9

SOLVE FOR BRAINLIEST PLEASE

Mathematics
2 answers:
IrinaVladis [17]1 year ago
5 0

Answer:

not sure sorry  x

Step-by-step explanation:

46+71 = 117

117 - 180 = 63

or

4x- 17

divided by 4 on both sides

x=4.25

grandymaker [24]1 year ago
3 0

<u>Answer</u>:

x = 20

<u>Explanation</u>:

all the interior angles in the triangle is 180°

<u>therefore</u>:

4x - 17° + 71° + 46° = 180°

4x + 100° = 180°

4x = 180° - 100°

4x = 80°

x = 20°

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The data show systolic and diastolic blood pressure of certain people. Find the regression​ equation, letting the first variable
MakcuM [25]

Full Question:

The data show systolic and diastolic blood pressure of certain people. Find the regression equation, letting the first variable be the independent (x) variable. Find the best predicted diastolic pressure for a person with a systolic reading of 113. use a significance level of 0.05.

Systolic| 150 129 142 112 134 122 126 120

Diastolic| 88 96 106 80 98 63 95 64

a. What is the regression equation?

^y = __ + __x (Round to two decimal places as needed.)

b. What is the best predicted value?

^y is about __ (Round to one decimal place as needed.)

Answer:

A. yhat = a + bx = -10.64 + 0.75x

B. 74.0

Step-by-step explanation:

A. To find the regression equation here, we apply the formulas and then apply it to find the value of y given value of x:

calculate xbar and ybar which is the average of the variables:

Where n(number of values in x or y)=8

xbar = sum of x/n = 129.375

ybar = sum of y/n = 86.25

to calculate b

b= [Sum x^2 * Sum y - Sum x * Sum x*y] / [N*Sum x^2 - (Sum x)^2]

b = 0.74891

To calculate a

a = ybar - b * xbar = -10.64023

Regression equation:

y=mx+b= -10.64 + 0.75x

B. given x = 113,

y = -10.64023 + 0.74891 * 113

y= 74.0

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3 years ago
I need a little help here !
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It is a knowledge check
On aleks
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Mark is 7 years older than his brother, who is y years old. Which expression correctly represents Mark's age?
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The equation below shows the total volume (V), in cubic units, of 9 identical boxes with each side equal to s units:
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36.864 cubic units is what the answer is

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3 years ago
Anyone PLEASE help!!! I will give brianliest
Pani-rosa [81]

Answer:

its the second one.

Step-by-step explanation:

7 0
2 years ago
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