Answer:
B,C
Step-by-step explanation:
So all you have to do is use the pythagorean theorem to solve this (a²+b²=c²).
Plug in the two shorter sides for a and b and the long side for c. If both sides equal the same thing then it will make a right triangle.
A) 5²+6²=9²
25+36=81
61≠81
B) 0.25+1.44=1.69
C)49+576=625
D) 100+256≠361
E)1+4≠9
Someone help her and show how you got your answer in steps
Answer:
Step-by-step explanation:
angle CDA = angle ABC (opposite angles of a parallelogram are equal)
56 degree = angle ABC
therefore angle ABC is 56 degree.
Answer:
First, a rational number is defined as the quotient between two integer numbers, such that:
N = a/b
where a and b are integers.
Now, the axiom that we need to use is:
"The integers are closed under the multiplication".
this says that if we have two integers, x and y, their product is also an integer:
if x, y ∈ Z ⇒ x*y ∈ Z
So, if now we have two rational numbers:
a/b and c/d
where a, b, c, and d ∈ Z
then the product of those two can be written as:
(a/b)*(c/d) = (a*c)/(b*d)
And by the previous axiom, we know that a*c is an integer and b*d is also an integer, then:
(a*c)/(b*d)
is the quotient between two integers, then this is a rational number.
