Researchers surveyed recent graduates of two diffefent universities about their income. The following
two-way table displays data for the sample of graduates who responded to the survey.
Approximately what percent of graduates from University A have an income under $30,000?
Round your answer to the nearest percent.
%
Income
University A
University B TOTAL
35
40
75
Under $30,000
$30,000 to $59,999
90
63
153
$60,000 and over
35
37
72
TOTAL
160
140
300

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2