9514 1404 393
Answer:
Step-by-step explanation:
Let 'a' and 'e' represent Alvin's and Elga's ages, respectively.
a = e-12 . . . . . Alvin is 12 years younger
a + e = 86 . . . the sum of their ages is 86
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Substituting for 'a' gives ...
(e -12) +e = 86
2e = 98
e = 49
a = 49 -12 = 37
Alvin is 37; Elga is 49.
Answer:
32.72 degrees
Step-by-step explanation:
This is an 11-gon
the sum of INTERIOR angles is (11-2) 180 = 1620
so each interior angle = 1620 / 11 = 147.2727
angle 1 is 180 - 147.2727 = 32.72 degrees
X=-3 because 5x-3=-15, -15-7 =-22
If the total for the bill was the 284 written in then this is the answer as follows
284*0.25=71
Tip = $71.00
Answer:
(x-4) (x+4) (x-4)= r3 - 4r - 16r + 64
Step-by-step explanation: