Answer:
B
Step-by-step explanation:
90+45+45=180
All triangles equal 180.
Its B because if one angle is 90° then the other angles will equal each other. It cant be 60° and 30° because they dont equal, so your final answer is B.
Hope this Helps!!! :)
A. is the answer it can't be rational
Step-by-step explanation:
√21 is irrational.
Let's assume that √21 is rational. So √21 can be expressed in the form p/q form.
p/q is the reduced form of rational number so p and q have no common factors other than 1, i.e. they are co-prime numbers.
√21 = p/q
21 = p^2/q^2... (squaring both the sides)
21q^2 = p^2
p^2 is even. p^2 is a factor of 2...(1)
p=2t p^2=4t^2 t belongs to I
2q^2 = 4t^2 (2q^2=p^2)
q^2 = 2t^2
q^2 is even
q is even
2 is a factor of q.
From the statements (1) and (2), 2 is a common factor of p and q both.
This is contradictory because in p/q, we have assumed that p and q have no common factors other than 1.
That is, our assumption that √21 is rational is wrong.
Therefore, √21 is irrational.
<u>STEP 1 </u>
Since AB = CD , M is the midpoint of AB , and L is the midpoint of CD
then OM = OL
2x - 3 = x + 5 → x = 8
OM = 2x - 3 → OM = 2(8) - 3 → OM = 16 - 3 → OM = 13
<u>STEP 2</u>
Since AB = 60 and M is the midpoint of AB
then MB = 30
<u>STEP 3</u>
Draw a line from O to B to create triangle OMB. Notice that OM is perpendicular so M is a 90° angle, so the Pythagorean Theorem can be used.
OM² + MB² = OB²
13² + 30² = OB² <em>substituted from steps 1 and 2</em>
169 + 900 = OB²
1069 = OB²
32.7 = OB
Realize that OB is the radius.
Answer: 32.7
I cannot answer this question because there is no table shown for the solution 9x + y = -31
Answer:
ok and..
Step-by-step explanation:
