Answer:
a = 
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
a² + 9² = 12²
a² + 81 = 144 ( subtract 81 from both sides )
a² = 63 ( take square root of both sides )
a =
Answer:
(x+8)(x+1)
Step-by-step explanation:
i am sorry but i didn't understand after the equation.
but i think i got what you trying to ask so this is
i got (x+8)(x+1)
Answer:
(-7)
Step-by-step explanation:
just plug in the number in the x place to solve
Answer:
markup 3 dollars a shirt. Total markup 900$
Step-by-step explanation:
x - y = 16
x^2 + x^2 = 130
----------------
x^2 - y^2 = 256
+(x^2 + y^2 = 130)
2x^2 = 386
x^2 = 193
x = <span>13.892 (3DP)
----
</span>x - y = 16
13.892 - y = 16
-y = 2.108
y = -2.108
The numbers are: 13.892 and -2.108
