Answer:
Step-by-step explanation:
We know i×i=i^2 which has value of -1.
We will multiply numerator and denominator by i so the denominator will no longer contain imaginary part(s).
Also multiplying by i/i does not change the value of the fraction because i/i=1.
Numerator × i gives (-5+i)i=-5i+i^2=-5i-1
=-1-5i.
Denominator × i gives (2i)i=2i^2=-2.
So the simplified version of this fraction given is:
The last simplification come from me multiplying fraction by -1/-1.
Let x = the cost of the student discount card.
x + the cost of the passes = 29.50
x + 15(1.50) = 29.50
x + 22.50 = 29.50
Subtract 22.50 on both sides to isolate the variable x.
x = 29.50 - 22.50
x = 7
The student discount card is $7.
Answer:
x= 121
y = 93
Step-by-step explanation:
90+x+x-28 = 180(linear pair)
or, 2x-62 = 180
or, 2x = 242
so, x = 121
now
y = x-28(veritically opposite)
or, y = 121 - 28
so, y = 93
Expression: 6 × -2
Solution: -12 degrees Fahrenheit
You double it by multiplying by two.
