Answer:
I think the answer is -1 1/2
x² + 18 = (x - 3√2i)(x + 3√2i)
165 divided by 11 equals 15
Make an equation system based on the problem
eg. a is the first number and b is the seond number
An equation for "<span>The sum of two numbers is 53" is
</span>⇒ a + b = 53
An equation for "<span>twice the first number minus three times the second number is 26"
</span>⇒ 2a - 3b = 26
<span>
Solve the equations by elimination and subtitution method
Eliminate a to find the value of b
a + b = 53 (multiplied by 2)
2a - 3b = 26
--------------------------------------
2a + 2b = 106
2a - 3b = 26
------------------- - (substract)
5b = 80
b = 80/5
b = 16
Subtitute the value of b to one of the equations
a + b = 53
a + 16 = 53
a = 53 - 16
a = 37
The numbers are 16 and 37</span>
Answer:
Original price of the television = $850
Step-by-step explanation:
Television price on sale = $680.00
% of sale = 20%
It means price on sale = 80% = $680.00
Original price of the television = 100% = ?
Price on 1% = 680/80 = $8.5
Original price of the television = 100% = $8.5 x 100
= $850
