Answer:
5
Step-by-step explanation:
The sum to n terms of a geometric sequence is
=
where a is the first term and r the common ratio
The expression inside the summation is
4 ← the nth term of a geometric sequence
with a = 4 and r = , then
=
=
= ( )
=
= 5
Answer:
88 are boys
Step-by-step explanation:
220 times 3/5 = 132
220-132 =88
Z=74
Y=86
______________________
sine is an odd function, and cosine is an even function.
Answer:
C(X) = 4.50 X + 500 is the cost for producing X t -shirts.
Step-by-step explanation:
The fixed production cost = $500
Let the number of t shirts produced each month = X
Cost of production of each T shirt = $4.50
Selling price of each shirt = $11.50
Now, The cost of production of X shirts
= X times ( Cost of each t shirt production) + Fixed Production Cost
= X ( $4.50) + $500
= 4.50 X + 500
or C(X) = 4.50 X + 500 is the cost for producing X t shirts.