10(length) by 6.5(width). 6.5×2=13, 13-3=10
Answer: d. 102
Why
If 6 is 78 then 5 is 102 and since 1,3,5,and 7 are equal 3 is 102. [180-78=120(180 is the straight line)]


<h3>ANGLE OF ELEVATION</h3>
☞ An angle of elevation is the angle between the horizontal line of sight of the observer to the object above.
<h3>ANGLE OF DEPRESSION</h3>
☞ An angle of depression is the angle between the horizontal line of sight of the observer to the object below.

Additional Information:-
☞ brainly.com/question/9817377
☞ brainly.com/question/21137209

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You missed one final step, no worries! When finding the percent off, subtract the value you got after dividing the price after discount by the initial price from 100.
So: 100 - 65 = 35
35% off
Hope this helps!
Answer:
the probability that at least one envelope is a yellow envelope is 16/21
Step-by-step explanation:
The probability that at least one envelope is a yellow envelope is P(Y);
P(Y) = 1 - P(Y)'
P(Y)' is the probability that no envelope is a yellow envelope.
Given;
red envelope = 1
blue envelopes = 3
green envelopes = 2
yellow envelopes = 3
Total = 9
Number of non-yellow envelope = 9 -3 = 6
(6 envelope are not yellow)
P(Y)' = P1 × P2 × P3
Since there is no replacement;
P(Y)' = 6/9 × 5/8 × 4/7
P(Y)' = 5/21
From equation 1;
P(Y) = 1 - 5/21
P(Y) = 16/21
the probability that at least one envelope is a yellow envelope is 16/21.