132 in
Step-by-step explanation:
- Take the total radius = 18+3 = 21= R (say)
- Simply use the formula for the circumference i.e. 2*pi*R
- 2*22/7*21= 132
Answer:
- She still has $15000 in the account after she graduates
Step-by-step explanation:
Let the number of semesters is s and the balance id b(s)
<u>The balance after s semesters can be expressed as:</u>
<u>After 10 semesters Isla has:</u>
- b(10) = 100000 - 8500*10 = 15000
Given is the expression, x² + 12x + n
It says to find value of 'n' that converts it into a Perfect Square Trinomial.
A perfect square trinomial is a quadratic expression which has a single root with multiplicity 2. i.e. it is of the form :- x² + 2bx + b² = (x + b)²
On comparing it with the given expression, we get :-
So 2b = 12 and n = b²
b = 6
and so b² = 6² = 36.
⇒ n = 36
Hence, x² + 12x + 36 = (x + 6)² i.e. n = 36 is the final answer.
Vanessa is trying to make 100 dollars to buy a bike. She already has 15 dollars, and she makes 2 dollars and 50 cents every time she walks her dogs for an hour. How many hours does she have to work in order to get 100 dollars?
That should do it.
