Using Pythagorean theorem we can easily get to know about the triangle.
If c^2=a^2 + b^2 Then triangle is Right Angled.
If c^2 > a^2 + b^2 Then triangle is obtuse triangle
and when c^2 < a^2 + b^2 , it means triangle is acute triangle.
( Here a= adjacent, b= opposite and c=hypotenuse of triangle)
Well, so the x+5y= 0 you can make this into x=-5y and then plug this in into ( y=9-2x) the -2x , which these would become y=9-2(-5y) simplify and equals to y=9+10y. Then you simplify much smaller y=-9. Now that you have the y number you just plug this in into x=-5y, which these becomes x=-5(-9) and the answer is x=45. At the end you just need to find the x and y, so the answer is x=45 and y=-9 . Hopefully this would make this much easier to you.
Answer:
1.51
Step-by-step explanation:
Divide 7.55 by 5 and it equals 1.51
It's basically asking 75% of what number is 63 so x * 75% = 63
75% in decimal form is .75
divide 63 by .75 which is 84.
so 75% of 84 would be 63.