There is no other data being given . So assuming it is a square the area should be 72×72=5184 sq cm.
Answer:
a) 10
b) 15
c) 190
d)
Step-by-step explanation:
Lets start with the generic item (d). In order to draw a chord we need to pick two endpoints from the total of n points of the circle and draw the line between them. The total amount of lines we can draw is equivalent to the total pair of points we can pick to draw them.
In other words, we can draw as many chords as the amount of subsets of 2 elements we can pick from a set of n. That number is the combinatorial number of n with 2 given by
a) If n = 5, the answer is
there are 10 possibilities
b) for n = 6
15 possibilities
c) for n = 20, we have
possibilities.
I hope that works for you!
Answer:
1.8 years
Step-by-step explanation:
Step one:
given data
P= $2000
Rate= 5%
Final amount A= $3800
Step two
A= P(1+rt)
substitute
3800=2000(1+0.05*t)
solve for t
3800=2000(1.05t)
3800=2100t
divide both sides by 2100
t= 3800/2100
t=1.8 years
it will take 1.8 years
Divide 10 & 8
Then multiply your answer by 40
"rate" is the keyword here. You'll need to come up with a "direct variation" relationship between c (number of calories burned) and w (person's weight):
c=kw
You are told that when w=130 lb, c = 89 calories. Find the constant of proportionality, k.
Then rewrite c=kw with this value of k substituted.
Finally, substitute 190 lb. for w in your formula and calculate the # of calories burned, c.