-15 = 6x + 15 -10x
1st. You combine like terms
(6-10)x
-15 = -4x + 15
2nd. You move variables to the left side and change the sign
-15 = -4x + 15
+4x +4x
4x - 15 = 15
+15 +15
4x = 30
3rd. You divide both sides of the equation by 4
(4x) /4 = (30) /4
x= 30/4
4th. Reduce the fraction by 2
30/ 4 = 15/2
Answer is 15/2
I think x equals 13 because 13+3=16 and 16 divided by 2 equals 8
<em>Your answer is the following.</em>
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<em>Answer = 19/50
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Answer:
D) x = 1 ± √(47)
Step-by-step explanation:
2x² + 3x - 7 = x² + 5x + 39
move all terms to one side:
x² - 2x - 46 = 0
complete the square:
x² - 2x + 1 - 1 - 46 = 0
(x - 1)² - 47 = 0
add 47 to both sides:
(x - 1)² = 47
square root both sides:
x - 1 = ±√(47)
add 1 to both sides:
x = 1 ± √(47)
Answer: 1.091 which is approximately 1 word per second
Step-by-step explanation:
Jack can text 180 words in 2 minutes and 45 seconds. We would convert 2 minutes to seconds
60 seconds = 1 minute
x seconds = 2 minutes
x = 2×60 = 120 seconds
2 minutes 45seconds = 120+45 = 165 seconds
This means Jack can text 180 words in 165 seconds
Let's find his unit rate in texts per second
if jack texts 180 words in 165 seconds
Then jack texts y words in 1 second
165y = 180
y = 180/165= 1.091 words per second
This is approximately 1 word per second
