Answer:
19%
Step-by-step explanation:
Last year:
Number of boys on honor roll = 96
Number of girls on honor roll = 60
Total students on honor roll = Number of boys on honor roll + Number of girls on honor roll
= 96 + 60
= 156
This year:
The number of boys on the honor roll increased by 25%
Number of boys on honor roll = 25% of 96 + 96
= 0.25×96 + 96
= 24 + 96
= 120
The number of girls on the honor roll increased by 10%.
Number of girls on honor roll = 10% of 60 + 60
= 0.10 × 60 + 60
= 6 + 60
= 66
Total students on honor roll = Number of boys on honor roll + Number of girls on honor roll
= 120 + 66
= 186
Percentage the total number of students on the honor roll increase = (186 - 156) / 156 × 100
= 30 / 156 × 100
= 0.19 × 100
= 19% to the nearest tenth
Answer:
-19n^4 - 8m^2 - 12m^4n
Step-by-step explanation:
8m^2 + 12m^4n + 9mn
-
19n^4 9mn
------------------------------------------------------------------------
-19n^4 - 8m^2 - 12m^4n
Answer:
376 miles each day
Step-by-step explanation:
If Angie's grandma wants to drive the same distance each day, she can divide her journey in to two equal halves.
The total distance that Angie's grandma has to drive is 752 miles so each day she may need to drive,
miles
Also, it takes 12 hours to drive 752 miles, so the speed at which Angie's grandma should drive is,
At this speed if she drives 6 hours a day, she may need to drive,
miles in a day.
Assuming Earth's gravity, the formula for the flight of the particle is:
s(t) = -16t^2 + vt + s = -16t^2 + 144t + 160.
This has a maximum when t = -b/(2a) = -144/[2(-16)] = -144/(-32) = 9/2.
Therefore, the maximum height is s(9/2) = -16(9/2)^2 + 144(9/2) + 160 = 484 feet.
Answer:
320 crayons per class
Step-by-step explanation:
the school bought 25 boxes...each containing 64 crayons.....so that a total of (25 * 64) = 1600 crayons.
so 1600 crayons and it has to be split equally 5 ways...
1600 / 5 = 320 crayons per class
