Answer:
:o
Step-by-step explanation:
Answer:
a.
cm or 7.21cm
b.
cm or 13.04cm
c. x=
cm or 11.66cm, y=
cm or 13.82cm
Step-by-step explanation:
a. You have to find the length of the other two sides of the triangle using the information already given. The first side is 6cm and the other is 12-9=4cm. Because it's a right-angled triangle you can use pythagoras

b. You can use pythagoras again because it's a right-angle triangle

c. In this question you have to find x and y. We need to find x first using pythagoras

Now that we've found x we can find y using pythagoras but instead of find c, we will find another side

Hope this helps :)
16.65 (explanation) i used a calculator. hope this helps you!
Answer:
Yes
Step-by-step explanation:
using distributive properties,
(3x+1)(4x-5) = 3x(4x-5) + 1(4x-5)
=> 12x^2 - 15x +4x - 5
=> 12x^2 - 11x - 5