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Luda [366]
3 years ago
13

I don’t know if the first one is right but could someone guess true or false?

Mathematics
1 answer:
victus00 [196]3 years ago
3 0

Answer:

B) false D) true E) true

Step-by-step explanation:

Plug in numbers to disprove the first one.

Area formula for triangles says D is true

It's the Pythagorean's Theorem for Heaven's sakes.

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The sides of a right triangle are x, x+21, and x+27. what is the length of the hypotenuse
mina [271]
Answer: 51 uinits

The three numbers are x , x + 21 and x + 27. 
The greatest of the 3 numbers is x + 27, so x + 27 has to be the hypotenuse.

----------------------------------------------
Pythagoras Theorem
----------------------------------------------

a² + b²  = c²

x² + (x+21)² = (x+27)²

x² + x² + 42x + 441 = x² + 54x + 729

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x = 24 or x = -12 (rejected, length cannot be negative)

----------------------------------------------
Find hypotenuse
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 Hypotenuse = x + 27 = 24 + 27 = 51 units

-----------------------------------------------
Answer: 51 units
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3 0
3 years ago
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6 0
3 years ago
Anyone know how to do this?
suter [353]

Answer:

D

Step-by-step explanation:

Because A isn' at all right and B, and C equal the same but D = 36 So the sides are 18 each side.

7 0
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