Answer:
3rd game: 59 The other 2 games 65 each
Step-by-step explanation:
(x+6)+(x+6)+x:3=63
Multiply all by 3
3x+12=189
3x= 177
x=59 (3rd=59 The other 2 65 each
59+65+65=189
189/3=63
Answer:
x = 0, x = 4
Step-by-step explanation:
12x - 21 = 5x + 7(x - 3)
First, foil out the right side --> 5x² - 15x + 7x - 21, which simplifies down to 5x² - 8x - 21.
Move the 12x - 21 to the right side by subtracting --> 0 = 5x² - 20x.
Factor out a 5x --> 0 = 5x(x - 4)
If you want to solve for x, set 5x = 0 and x - 4 = 0.
For 5x = 0, divide both sides by 5 to isolate the x --> x = 0/5, which simplifies down to x = 0.
For x - 4 = 0, add 4 to both sides to isolate the x --> x = 0 + 4, which simplifies down to x = 4.
Plug the values back into the original equation to check if it works
12(0) -21 = 5(0) + 7((0) - 3) --> -21 = -21
12(4) - 21 = 5(4) + 7((4) -3) --> 27 = 27
Hope this helps!
The mean is the average. the median is the middle number. to find the mean, add all the numbers in the list and divide it by how many numbers there are. add 2+ 11 + 11 + 11 + 12 + 12 + 13 + 14 + 14 + 15 and divide them by 10. that’ll be your mean. to find the median, place them all in number order. the middle number is your answer
Answer:
8x + 4
Step-by-step explanation:
Subtract the numbers: 2x + 5 + 6x - 1 2x + 4 + 6x
Then, you combine them like terms: 2x + 4 + 6x = 8x + 4
Answer:
The travel time of the trip is 8.55 hours
Step-by-step explanation:
The average speed of an object is calculated using the following formula:
Where 
is the total distance traveled by the object and t is the time it took the object to travel that distance.
So we know that:
Therefore:
