Answer: -20
Step-by-step explanation: multiply -5 and 4
question 1: you must set the equation to 0 in order to solve the quadratic equation
Suppose
is even, i.e. there is some integer
such that
. Then
where
is just some other integer. Therefore
is odd, proving the contrapositive, and so the original statement is also true.
Answer:
x = 9/4 or 2.25
Step-by-step explanation:
First you will combine like terms. Combine 2x + 3x - x which gives you 4x. Then combine 9 - 2 and you get 7. Now the equation is 4x + 7 = 16. Subtract 7 from both sides to get x by itself. Now you have 4x = 9. To find what x equals, divide by 4 on each side. x = 9/4 or 2.25
Answer:
5 adult and 3 student tickets were purchased
Step-by-step explanation:
Let x be the number of adult tickets
. Then 8
−
x is the number of student tickets
.
7.25
x +
5.5
(8
−
x
)
=
52.75
7.25
x +
44
−
5.5
x
=
52.75
1.75
x
=
8.75
x
=
5
