Answer:
A. 17
Step-by-step explanation:
using the cosine rule (also see attached for reference):
AB² = BC² + AC² - 2·AC·BC cos C
2·AC·BC cos C = BC² + AC² - AB²
Given that AC = 18, AB = 12 and BC = 18, substituting these into the formula
2(18)(28) cos C = 28² + 18² - 12²
1008 cos C = 964
cos C = 964/1008
cos C = 0.9563
C = cos⁻¹ 0.9563
C = 16.99 ( = 17° rounded to nearest degree)
Answer:
AE = 60 units
Step-by-step explanation:
GE is one third the length of AE so...
GE = 1/3(AE)
20 = 1/3x
3(20) = (1/3x)3/1
60 = x
x = 60
AE = 60 units
Answer:
all work is shown and pictured
c. 5/6 cups
Step-by-step explanation:
1 2/3 = 5/3
5/3= 1.666
1.66÷2= 0.833
When we divide. the number should equal 0.833
8/3= 2.66 nope
10/3= 3.33 nope
5/6= 0.833 yes
6/5= 1.2 nope