Answer:
Try (2,3)...
Step-by-step explanation:
(a - 2b) • (2a - b) is how you factor this using FOIL
Height of the lamp post is 2.5 ft.
<u>Step-by-step explanation:</u>
AB = lamp post
CD = Julia
CE = Shadow
AC = 2 ft , CE = 5 ft , ∠AEB = 20°
AE = AC+ CE = 2+ 5 = 7 ft
Considering ABE as a right triangle, we can write the tan ratio as,
tan ∠AEB = opp/adj = AB/AE
AB = AE × tan ∠AEB
= 7 × tan 20°
= 2.5 ft
So, height of the lamp post is 2.5 ft.
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Answer:
42°
Step-by-step explanation:
This is right triangle and sum of 2 angles is 90°:
y+48°=90°
so y= 90°- 48°= 42°
Let's say x is her consultant hours and y is her web designer hours.
100x+40y=1280
x+y=20
Using the systems or graphing the problems will lead you to x=8 and y=12.
In other words, she worked 8 hours as a consultant, and 12 hours as a web designer.