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Cloud [144]
2 years ago
5

-63 —— = -7 what’s the error -9

Mathematics
2 answers:
Yanka [14]2 years ago
8 0

Answer:

minus cancel minus making it 7

STatiana [176]2 years ago
6 0

Answer:

One of the negatives must go

Step-by-step explanation:

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Suppose Cotangent (theta) = StartFraction 5 Over 12 EndFraction, where Pi less-than theta less-than StartFraction 3 pi Over 2 En
Agata [3.3K]

Answer:

Sin theta = 12/13

Step-by-step explanation:

From the question;

Cot theta = 5/12

Kindly recall;

Cot theta = 1/ tan theta

Hence, tan theta = 12/5

Mathematically

tan theta= opposite/adjacent

to get hypotenuse, we will use Pythagoras’ theorem which states that the square of the hypotenuse equals sum of the squares of the two other sides

let hypotenuse be h

h^2 = 12^2 + 5^2

h^2 = 144 + 25

h^2 = 169

h = √169

h = 13

But sine theta = opposite/ hypotenuse = 12/13

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3 years ago
Find the slope of the following ponit (5,1) and (7,-3)
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Answer:

slope=-2

Step-by-step explanation:

First you need to know the slope formula: y2-y1/x2-x1

Then you just plug in and solve:

-3-1/7-5 = -4/2 = -2

5 0
3 years ago
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The mean height of married American women in their early twenties is 64.5 inches and the standard deviation is 2.5 inches. The m
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Answer:

The equation for regression line and predicting a husband's height for married couples in their early 20s

Equation: Y'=33.67+0.54*X'

Step-by-step explanation:

r=0.5

x'=64.5

Sx=2.5

y'=68.5

Sy=2.7

General regression line equation is:

Y'=a+b*X'

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b=r*\frac{S_{y}}{S_{x}}\\b=0.5*\frac{2.7}{2.5}\\b=0.54

The intercept with axis y is the mean of the decreased by the product of the slope and the mean of x

a=y'-b*x'\\a=68.5-0.54*64.5\\a=33.67

The equation regression line then is:

Y'=33.67+0.54*X'

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3 years ago
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6x - 35 + 3x + 53 = 180
9x + 18 = 180
9x = 162
x = 18

angle A = 6(18)-35 = 73 degrees
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2 years ago
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