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adelina 88 [10]
2 years ago
7

Find the length of side xx in simplest radical form with a rational denominator.

Mathematics
2 answers:
QveST [7]2 years ago
5 0

Answer:

Solution given:

Since the given triangle is isosceles and right angled triangle

perpendicular [p]=base[b]=x

hypotenuse [h]=5

we have

by using Pythagoras law

p²+b²=h²

x²+x²=5²

2x²=25

x²=25/2

x²=18

x=\sqrt{\frac{25}{2}}

x=\bold{\frac{5\sqrt{2}}{2}}

Maksim231197 [3]2 years ago
4 0

Answer:

\frac{5\sqrt{2} }{2}

Step-by-step explanation:

Divide 5 by \sqrt{2} , then rationalize denominator

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I think it measures an angle of 180 degrees
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2 years ago
What's the answer to the equation of 4x^2+25<br> and show yor work please and thank you
padilas [110]
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4 0
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What is the quadratic regression equation for the data set? ​ ​ ​ <br><br> PLEASEE HELP ME
Soloha48 [4]
You're trying to find constants a_0,a_1,a_2 such that \hat y=a_0+a_1\hat x+a_2{\hat x}^2. Equivalently, you're looking for the least-square solution to the following matrix equation.


\underbrace{\begin{bmatrix}1&6&6^2\\1&3&3^2\\\vdots&\vdots&\vdots\\1&9&9^2\end{bmatrix}}_{\mathbf A}\underbrace{\begin{bmatrix}a_0\\a_1\\a_2\end{bmatrix}}_{\mathbf x}=\underbrace{\begin{bmatrix}100\\110\\\vdots\\70\end{bmatrix}}_{\mathbf b}

To solve \mathbf{Ax}=\mathbf b, multiply both sides by the transpose of \mathbf A, which introduces an invertible square matrix on the LHS.

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Computing this, you'd find that

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8 0
3 years ago
Please choose any two and help me answer i will be very grateful and will mark you brainliest
ehidna [41]

Answer:

18 and 20, 4

Step-by-step explanation:

Math reasoning 1:

Set the first number as x and the other one as x+2 because it is a consecutive even number.

x+x+2=38

2x=36

x=18

18+2=20

The 2 consecutive numbers are 18 and 20

Problem solving 1:

Write out equation first, set the unknown number as x

5+x=9

x=4

4 0
3 years ago
Read 2 more answers
Long division (3a²-8a? +19a – 7) + (3a-2)
myrzilka [38]

Answer:

3a^2+12a-7

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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