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Yuki888 [10]
3 years ago
12

Plz help ASAP!!!! PLZ

Mathematics
1 answer:
AnnyKZ [126]3 years ago
3 0
To find a missing side of a right triangle use the Pythagorean theorem
A2+b2=c2
C is the hypotenuse (long side)
Plug into the equation
11^2+b2=12^2
121+b2=144
So subtract 144-121 to get the missing side you get 23
Take the square root
It will be 4.7
If they want it rounded
X=5
If I had any mistakes in my answer I am sorry but everything should be correct
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Step-by-step explanation:

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PLEASE HELP ASAP!!!!!!
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Wewaii [24]

Answer:

<h3>          The numbers are 20 and 28</h3>

Step-by-step explanation:

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\dfrac{x+8}x=\dfrac75\\\\(x+8)\cdot5=x\cdot7\\\\5x+40=7x\\^{\quad-40\qquad-40}\\{}\quad5x = 7x-40\\^{\quad-7x\quad-7x}\\-2x=-40\\^{\div(-2)\quad\div(-2)}\\{}\ \ x=20\\\\x+8=28

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Write an algebraic expression for 15 decreased by twice a number
vichka [17]
An algebraic expression is, obviously, an expression with a variable.

"A number" would represent a variable, which, in this case, we'll use y.

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6 0
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1:500,000 = 8 : 8*500,000 = 8:4,000,000\\4,000,000 cm = 40 km

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