2x + 4(x - 1) = 2 + 4x
2x + 4x - 4 = 2 + 4x
6x - 4 = 2 + 4x
6x - 4x = 2 + 4
2x = 6
x = 3........there is 1 solution
25 - x = 15 - (3x + 10)
25 - x = 15 - 3x - 10
25 - x = -3x + 5
3x - x = 5 - 25
2x = - 20
x = -20/2
x = -10.....there is 1 solution
4x = 2x + 2x + 5(x - x)
4x = 4x + 5x - 5x
4x = 4x......this has infinite solutions
learn this...
if ur equation ends in a variable equaling a number, then there is one solution.
if ur equation ends in something not equal, like 2 = 4, or 4 = 6, then there is 0 solutions.
if ur equation ends in something equal to something,(the same) like 2 = 2, or 4x = 4x, then there is infinite solutions
The first tile goes to 4p3q2
The second tile goes to 8pq5
The third tile goes to 4p2q5
The fourth tile goes to 8p2q
Answer:
$9.68
Step-by-step explanation:
64.54 * 0.15 = 9.68
<span>The cost of producing a new watch is $50. At a price of $100, watches will most likely be sold and good.</span>
Answer:
x = 6.2 or -2.2
Step-by-step explanation:
Given:
2x² - 12x - 14 = x² - 8x
Collect like terms
2x² - x² - 12x + 8x - 14 = 0
x² - 4x - 14 = 0
a = 1
b = -4
c = -14
x = -b ± √b² - 4ac / 2a
= -(-4) ± √(-4)² - 4(1)(-14) / 2(1)
= 4 ± √16 -(-56) / 2
= 4 ± √16 + 56 / 2
= 4 ± √72 / 2
= 4 ± 6√2 /2
= 4/2 + 6√2/2 or 4/2 - 6√2/2
= 2 + 3√2 or 2 - 3√2
= 2 + 4.2426406871192 or 2 - 4.2426406871192
= 6.2426406871192 or -2.2426406871192
Approximately,
x = 6.2 or -2.2
