Write the expression in the form a+bi(3-5i)(2+2i)
1 answer:
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Answer:
4) A
5) E
Step-by-step explanation:
#4
Cross multiply the equation and you get:
Since is the same thing as
, you can change the equation into
Cancel out the y on the top and bottom and you get 1/10
#5
, simplify and you get
so x=15
is equal to
after you plug in x, and that is equal to 9
Answer:
Area = 3.77 cm^2
Step-by-step explanation:
The diagram using the given statement is attached below
Diameter of larger circle is 10 so radius R1 = 10/2= 5
diameter of smaller circle is 7.6, radius (r1)= 3.8
We need to find the area of the shaded region
Area of the circle =
Area of annulus =
=
Area = 3.77 cm^2
Answer:
Step-by-step explanation:
Let
x ----> the number of first class seats
y ----> the number of economy class seats
we know that
An aircraft has a maximum of 30 first class seats
so
An aircraft has a maximum of 220 economy seats
A flight will be cancelled if the money taken for the seats is less than $28,800.
so
therefore
Three inequalities that represent the situation are