2x + 5y = -8 . . . (1)
-133x - 4y = -8 . . . (2)
(1) * 4 => 8x + 20y = -32 . . . (3)
(2) * -5 => -665x + 20y = 32 . . . (4)
(3) - (4) => 673x = 0
x = 0
From (1), 2(0) + 5y = -8
5y = -8
y = -8/5
In 2x+10=16, x will equal 3. In 2x-10=16, x will equal 13.
Answer:
It is 83.35 Unless your rounding up then it is 84 dollars
Step-by-step explanation:
To factor this notable trinomial, you have to find two numbers that summes give -5 and multiplied give 6*(-25) = -150
Then let's call n1 and n2 the two numbers and a the number before x^2 (6)
ax^2+sx+fn = (ax + n1)(x + n2/a)
Numbers are -15 and +10
-15+10 = -5
-15*10 = -150
So
(6x-15)(x + 10/6)
Or write it as a sum
6x^2 + 10x - 15x - 25
And factor
6x^2 + 10x = 2x(3x+5)
-15x-25 = -5(3x+5)
(2x-5)(3x+5)
Answer:
x=8 is a true solution of the radical equation
Step-by-step explanation:
we have
Solve for x
squared both sides
Convert to factored form
The solutions are x=2 and x=8
<u><em>Verify the solutions</em></u>
For x=2
Substitute in the original equation
----> is not true
therefore
x=2 is not a true solution of the radical equation
For x=8
Substitute in the original equation
----> is true
therefore
x=8 is a true solution of the radical equation
