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DaniilM [7]
3 years ago
7

Brainliest answer to the right answer and 30 points!

Mathematics
1 answer:
timofeeve [1]3 years ago
8 0
10.5^2 + 20.8^2 = 110.25 + 432.64 = 542.89
23.3^2 = 542.89 
Right triangle
------------------------
20.1^2 = 524.41
6^2 + 20.1^2 = 36 + 404.01 = 440.01
Not a right triangle
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A point p in the first quadrant lies on the parabola y=x^2. Express the coordinates of p as a function of the angle of inclinati
max2010maxim [7]

Answer:

  • The coordinates of the point p are:       (x,xtan\alpha )

                   

           

Explanation:

1. Name the angle of inclination of the line joining p to the origin α.

2. Find the relation between the coordinates of the point (x,y)

When you draw a line from the origin to the parabola, the intersection point, p(x,y) will have coordinates (x,y).

As per the definition of the tangent trigonometric ratio you have:

  • tan\alpha =\frac{y}{x}

From which you can clear y:

  • y=xtan\alpha =>(x,y)=(x,xtan\alpha )

Which is the expression of the coordinates of p as a function of the angle of inclination of the line joining p to the origin.

8 0
3 years ago
Find the value of the variable y in the equation –5.7 + y = 8.2.
emmasim [6.3K]

Answer:

y = 13.9

Step-by-step explanation:

It is given that  

–5.7 + y = 8.2.    -----(1)

Equation (1) is a linear equation in one variable.  

LHS consists of a constant and a variable term

RHS consists of only constant term

<u>Find the value of y</u>

Solving the equation

-5.7 + y = 8.2

moving -5.7 to the RHS

y = 8.2 + 5.7

y = 13.9

Therefore the value of y = 13.9

-5.7 + y = 8.2

5 0
3 years ago
Cot^2x•sec^2x convert each of these into sine and cosine and simplify
Nana76 [90]

\cot(x)=\frac{\cos x}{\sin x}

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$\therefore \cot^2x\cdot\sec^2x= \frac{\cos^2x}{\sin^2x}\frac{1}{\cos^2x}=\frac{1}{\sin^2x}$

8 0
3 years ago
Solve using substitution.<br><br> x + y = 9<br> –5x + 3y = 19
alexandr402 [8]

Answer:

(1,8)

Step-by-step explanation:

please mark me as brainliest thank you

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Complete the table to find the rule for the dilation, the coordinates of trapezoid P′Q′R′S′, and the coordinates of the dilated
Soloha48 [4]

Answer:

Give me 100 points and ill answer it

Step-by-step explanation:

Translation 5,2

8 0
3 years ago
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