Answer:
15(b+2) + 15 + 2b-9 +b = 90
Step-by-step explanation:
Essentially you add up all of the values and make it equal to 90, then solve for b
15(b+2) + 15 + 2b-9 +b = 90
15b + 30 + 15 + 2b - 9 + b = 90
18b + 30 + 15 - 9 = 90
18b + 36 = 90
18b = 54
b=3
The correct answer would be
"31.25"
Hope this helps!
It took him 90,760 milliseconds to finish the race track.
The race was 100,000 centimeters long.
Step-by-step explanation:
Given,
Length of racetrack = 1000 m
Time taken to cover the length = 90.76 seconds
How many milliseconds did it take him to finish the race?
1 second = 1000 milliseconds
90.76 seconds = 90.76 * 1000 = 90760 milliseconds
It took him 90,760 milliseconds to finish the race track.
How many centimeters long was the race?
1 meter = 100 centimeters
1000 meter = 100*1000 = 100000 centimeters
The race was 100,000 centimeters long.
Keywords: multiplication
Learn more about multiplication at:
#LearnwithBrainly
Answer:
t = 8/9
Step-by-step explanation:
There are many possible solutions that could be expressed as equivalent to the equation 10t - 4t + 3t = 8. With that being said, here is a simplified form, solved for t.
10t - 4t + 3t = 8
6t + 3t = 8
9t = 8
t = 8/9
Each of these form's is an equivalent equation to the one written by Mrs. McAlister.
If you can provide the table of student answers, we could answer which students were correct or wrong. Without the table, we can only guess.
Cheers.
Assuming "i" is an imaginary unit:
