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Cloud [144]
2 years ago
12

WZ = 32, YZ = 6, and X is the midpoint of WY

Mathematics
1 answer:
ZanzabumX [31]2 years ago
8 0

Answer:

XY=13\ units

Step-by-step explanation:

<u><em>The question is</em></u>

Find the value of XY

see the attached figure to better understand the problem

we know that

WZ=WX+XY+YZ -----> by segment addition postulate

If X is the midpoint WY

then

WX=XY

substitute in the formula above

WZ=XY+XY+YZ  

WZ=2XY+YZ

substitute the given values and solve for XY

32=2XY+6

Subtract 6 both sides

32-6=2XY

26=2XY

Divide by 2 both sides

26/2=XY

Rewrite

XY=13\ units

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X^2+1=0<br> What are the roots of this equation?<br> Thanks!
Hitman42 [59]
X² + 1 = 0

=> (x+1)² - 2x = 0

=> x+1 = √(2x)

or x - √(2x) + 1 = 0

Now take y=√x

So, the equation changes to

y² - y√2 + 1 = 0

By quadratic formula, we get:-

y = [√2 ± √(2–4)]/2

or √x = (√2 ± i√2)/2 or (1 ± i)/√2 [by cancelling the √2 in numerator and denominator and ‘i' is a imaginary number with value √(-1)]

or x = [(1 ± i)²]/2

So roots are [(1+i)²]/2 and [(1 - i)²]/2

Thus we got two roots but in complex plane. If you put this values in the formula for formation of quadratic equation, that is x²+(a+b)x - ab where a and b are roots of the equation, you will get the equation

x² + 1 = 0 back again
So it’s x=1 or x=-1

5 0
2 years ago
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Find the volume of the pyramid 10ft 8yd 9yd
Slav-nsk [51]
Answer= 120
Explanation= plugged it into a calculator
3 0
2 years ago
Which measurement is most accurate to describe the amount a coffee cup could hold 350 mL 2.4 L 25 mL or 0.8 L
katrin [286]
The answer would probably be 25mL
4 0
3 years ago
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the tens digit of a two digit number is 5 greater the units digit. If you subtract double the reversed number from it, the resul
likoan [24]

Given:

The tens digit of a two digit number is 5 greater the units digit.

If you subtract double the reversed number from it, the result is a fourth of the original number.

To find:

The original number.

Solution:

Let n be the two digit number and x be the unit digit. Then tens digit is (x+5) and the original number is:

n=(x+5)\times 10+x\times 1

n=10x+50+x

n=11x+50

Reversed number is:

x\times 10+(x+5)\times 1=10x+x+5

x\times 10+(x+5)\times 1=11x+5

If you subtract double the reversed number from it, the result is a fourth of the original number.

11x+50-2(11x+5)=\dfrac{1}{4}(11x+50)

11x+50-22x-10=\dfrac{1}{4}(11x+50)

40-11x=\dfrac{1}{4}(11x+50)

Multiply both sides by 4.

160-44x=11x+50

160-50=11x+44x

110=55x

Divide both sides by 55.

\dfrac{110}{55}=x

2=x

The unit digit is 2. So, the tens digit is 2+5=7.

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6 0
2 years ago
4-(2y-1)=2(5y+9)+y please help quick
stich3 [128]

Step-by-step explanation:Step 1: Simplify both sides of the equation.

4−(2y−1)=2(5y+9)+y

4+−1(2y−1)=2(5y+9)+y(Distribute the Negative Sign)

4+−1(2y)+(−1)(−1)=2(5y+9)+y

4+−2y+1=2(5y+9)+y

4+−2y+1=(2)(5y)+(2)(9)+y(Distribute)

4+−2y+1=10y+18+y

(−2y)+(4+1)=(10y+y)+(18)(Combine Like Terms)

−2y+5=11y+18

−2y+5=11y+18

Step 2: Subtract 11y from both sides.

−2y+5−11y=11y+18−11y

−13y+5=18

Step 3: Subtract 5 from both sides.

−13y+5−5=18−5

−13y=13

Step 4: Divide both sides by -13.

−13y

−13

=

13

−13

y=−1

 Answer: y =-1

7 0
2 years ago
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