Answer:
π (or 270°)
Step-by-step explanation:
I use the trick with the coordinates.
(0, -1)
cos270° = 0 (the x-coordinate)
sin270° = -1 (the y-coordinate)
This trick works depending on the radius.
HELPPPPP?!?!??!?!?!?
2 answers:
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Circumference of circular track, C = 0.5 miles = 0.5×5280 feet = 2640 feet.
We know, circumference in circle is given by :
( Here, r is radius i.e distance of centre from track )
Putting values in above equation :
2 × 3.14 × r = 2640
6.28 × r = 2640
r = 420.38 feet
Therefore, distance between centre and track is 420.38 feet .
Hence, this is the required solution.
Answer:
$0.79.
Step-by-step explanation:
Let T= The price of beach towel,
P = The cost of each postcard.
S = The cost of sunglasses.
H = The cost of hat.
We have been given that while on vacation Craig bought a pair of sunglasses for $15.98. The beach towel cost 0.50 cents more than half the price of sunglasses.
We can set this information in an equation as:
We are told that Craig gave the cashier $40 and got 3.59 change and each postcard cost the same. So we can set this information in an equation as:
Let us substitute our given values.
Let us combine like terms.
Let us subtract 32.46 from both sides of our equation.
Let us divide both sides of our equation by 5.
Therefore, each postcard costs $0.79.