D, it increases then goes at a constant speed
Answer: 19.8 ft
Step-by-step explanation:
Use the Pythagorean Theorem formula to solve for how high the top of the ladder reach.
The formula says a^2 + b^2 = c^2
Where a and b are the two legs and C is the hypotenuse.
In this situation, the hypotenuse will be length of the ladder , and either a or b will be the length of the ladder from the building or the length of how long the ladder.
a will be 3 , and c will be 20. Input in the values into the formula and solve for b.
3^2 + b^2 = 20^2
9 + b^2 = 400
-9 -9
b^2 = 391
b =
b = 19.77371 round to the nearest tenth is , 19.8
The answer is A. 5/12
Hope it helped!
According to the question statement, the total sum of students is 221, which includes the students that ride on bus and the students that ride in a van.
The students that ride in a van are five, the students that ride on bus are 6 times s which is the product of the number of buses and the number of students that are on each bus.
Write all this information into an equation, this way:
![6s+5=221](https://tex.z-dn.net/?f=6s%2B5%3D221)
Now, solve the equation for s to find the number of students that are on each bus.
![\begin{gathered} 6s+5=221 \\ 6s=216 \\ s=\frac{216}{6} \\ s=36 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%206s%2B5%3D221%20%5C%5C%206s%3D216%20%5C%5C%20s%3D%5Cfrac%7B216%7D%7B6%7D%20%5C%5C%20s%3D36%20%5Cend%7Bgathered%7D)
There are 36 students on each bus.