Answer:
44%
Step-by-step explanation:
You would have to divided 11 by the total of students in th concert 11 divided by 25 is 0.44 would be 44%
Answer:
<h2>17.2cm^2</h2>
Step-by-step explanation:
step one:
The question did not give the area of the pan and the number of biscuit
so let assume an are of 80cm^2 of the pan and the number of biscuit is 20
the diameter of each biscuit is 2cm
the radius is 2cm
The expression for the area is
A=πr^2
A=3.14*1^2
A= 3.14cm^2
the total area covered by the biscuit is
=3.14*20
=62.8cm^2
the area not covered is
=80-62.8
=17.2cm^2
Answer:
34%
Step-by-step explanation:
the graph is a hundred so all you have to do is count the number of squares which is 34
Answer:
<em><u>The number of students that like only Nokia </u></em>
<h2>= 30</h2>
Step-by-step explanation:
consider N the number of students who like Nokia → N=?
T the number of students who like Techno → T=35
Statement 1: In a class of 40 students, 5 like neither Nokia nor Techno
we can translate it like this: 35 student like Nokia or Techno
we can note it like this : T∪N= 35
Statement 2: 30 like Techno and Nokia
we can note it : T∩N = 30
using a rule concerning the number of element of a set :
T∪N = N + T - T∩N
then
35 = N + 35 - 30
⇒ N - 30 = 0
⇒ N = 30
Answer: x=4
Step-by-step explanation:
similar triangle so corresponding parts are similar
cross multiply
70 = 20x-10
80 = 20x
x = 4