Answer: it should be C
Step-by-step explanation:
proof is (countable) an effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial while theorem is (mathematics) a mathematical statement of some importance that has been proven to be true
A^2 + b^2 = c^2
a and b are the same length
2a^2 = (5sqrt2)^2
2a^2= 25•2
a^2= 25•2/2
a^2 = 25
a =5
x = average of next 5 quizzes
4 * 73 = first 4 quizzes
There will be a total of 4 +5 = 9 quizzes
Average of all quizzes = 88 = (4*73+5x)/9
9*88 = 9*(292 +5x)/9
792 = 292 + 5x
500 = 5x
X = 500/5 = 100
<span> Next 5 quizzes need
to average 100</span>
Two-fifths time a plus a over 2 equals a minus 2 will be a=20
<u>Step-by-step explanation:</u>
We have to find a, by first writing the verbal expression into an arithmetic form as,
Two fifths times a = (2/5)a
a over 2 = a/2
a minus 2 = a-2
(2/5)a + (a/2) = a-2
We have to take LCM on LHS as 10.
(2×2 /5×2)a + (a×5 /2×5) = a-2
(4a/10) + (5a/10) = a-2
Moving 10 to the other side, we will get,
4a+ 5a = 10(a-2)
9a = 10a -20
Grouping terms we will get,
10a - 9a = 20
a = 20