X=83. This is because all of the answers combined (excluding 2x) is 664. there are a total of 6 exterior angles. now you take the 6 total angles + 2x. which is 8x. here is your equation. 8x=664. divide each side by 8. x=83.
Well, the answer is Rhombus. Hope I help you ;)
c/7 = 6 1/7 ⇒ c = 43 ⇒ 43/7 = 6 1/7
Convert mixed fraction into a simple fraction
6 1/7 ⇒ (6 * 7 + 1)/7 = 43/7
c/7 = 43/7
proportionality:
a/b = c/d where ad = bc
a = c
b = 7
c = 43
d = 7
ad = bc ⇒ c7 = 7*43 ⇒ c7 = 301 ⇒ 7c/7 = 301/7 ⇒ c = 43
Since the
total of weight of an exam is 100 and the final exam is 4 times the weekly exam
X + 4x =
100 %
5x = 100
%
X = 20%
4x = 80%
Weighted ave
= 0.2( ave weekly exam) + 0.8(final exam
88 =
0.2(92) + 0.8(final exam)
Solve for
the final exam
<span>Final exam
= 87</span>