Hey user!
your answer is here...
laws ( rules ) of reflection are :-
• angle of incidence is equal to angle of reflection.
• the incident ray, Normal ray and reflected ray all lie in same plane.
cheers!!
Answer:
Step-by-step explanation:
This is a Pythagorean Theorem Question
c^2 = a^2 + b^2
c= sqrt(5)
a = x
b = x This is an isosceles right triangle. The vertical side and the horizontal side are equal.
x^2 + x^2 = sqrt(5)^2
2x^2 = 5 Divide both sides by 2
x^2 = 5/2 Take the sqrt of both sides.
√x^2 = √5 / √2 Multiply right side by √2 on both top and bottom
x = √5*√2 / √2*√2
x = √10 /2
Answer:
y=-3-3x
Step-by-step explanation:
Transpose the equation for y
y=-12/4-12x/4
y=-3-3x
Let the number be x.
then the number is (x + 6)
the difference between their squares is 192
(x + 6)² - x² = 192
expanding we get;
x² + 12x + 36 - x² = 192
12x + 36 = 192
12x = 192 - 36
12x = 156
x = 13
the numbers are 13 and 19.
hope this helps, God bless!
0.329 is a rational number because the decimal stops. If it had continued on and on with no particular pattern, it would have been irrational. It can be a fraction too (329/1000)...
127.5 is a rational number because again the decimal ends. It can also be converted into a fraction which is another sign that it is rational (127 1/2)...
-89 is a rational number because negatives are rational numbers. It is also in the category of an integer, which means that is a rational number also...
The last one is a non-perfect square, which means no number squared could ever give you 101. When you solve for it, it is also a non-terminating decimal.
