Answer:
25 cm.
Step-by-step explanation:
If the hypotenuse is x cm long the 2 legs are x-5 and x-10 cm long.
So by the Pythagoras theorem:
x^2 = (x - 5)^2 + (x - 10)^2
x^2 = x^2 - 10x + 25 + x^2 - 20x + 100
x^2 - 30x + 125 = 0
(x - 5)(x - 25) = 0
x = 5, 25
We can discard x = 5 because that would make the lengths of the legs negative so the hypotenuse = 25 cm long.
Foil the binomials
First: n*n=n^2
Outer: n*-5=-5n
Inner: -3*n=-3n
Last: -3*-5=15
Put it together and simplify
n^2-5n-3n+15
n^2-8n+15
Final answer: A
Answer:
A. 3R > 14
Step-by-step explanation:
Here R = 4.6
Now we have to check each options and find which is true.
3R > 14
Dividing both sides by 3, we get
R > 14/3
R > 4.67
Which is true.
All other options are not true.
R + 32 >
R > -32 is not true.
R - 12 < -8
R < +4 is not true.
R/3 < 1
R < 3 is not true.
Hope this will help you.
Answer:
audrey_111506
Step-by-step explanation:
