Answer:
20 ft
Step-by-step explanation:
Keep in mind that, both ratios are the same, let the length of the shadow be x, then you can make an equation that 30/ 40 = 15 / x, then 30x = 15 * 40 = 600, so x = 20.
III. If E={1, 2, 3, 4, 5, 6, 7, 8, 9, 10) A=(2, 3, 5, 7), B=(1, 3, 5, 7, 9) List the following sets: a) (AUB) b) (AnB) c) AnB' d
tresset_1 [31]
Step-by-step explanation:
A u B = { 1,2,3,5,7,9}
AnB = { 3,5,7}
B' = {2,4,6,8,10}
so AnB' = {2}
(AnB) = {1,3,4,5,6,7,8,9,10}
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23. 21.25
25. 31.3 or 31.4 can't tell from that picture angle.
65 mph ⇒ 1 hour = 65 miles
1 hour = 65 miles
2.5 hours = 65 x 2.5 = 162.5 miles
Answer: 162.5 miles
