I think the answer is (7x-3)(7x+3)
Answer:
answer: obtuse
Step-by-step explanation:
Hope that helps!
Answer:
30cm
Step-by-step explanation:
Area is πr²
So,
πr²=225π
r=√225
r=15cm
Diameter=2r=30
Maths is easy peasy
The complement is what adds to an angle to get 90 degrees
so
x is 25 mroe than 4 times y
x+y=90
x=25+4y
sub 25+4y for x
25+4y+y=90
25+5y=90
minus 25 both sides
5y=65
divide both sides by 5
y=13
sub back
x+y=80
x+13=90
x=77 degrees
