Answer:
The pitch (slope) of the roof is
or
Step-by-step explanation:
we know that
The formula to calculate the slope is equal to
where
-----> is the vertical distance (rise)
-----> is the horizontal distance (run)
therefore
convert to percentage
Answer:
D
Step-by-step explanation:
IM RLY SORRY IF THIS IS WRONG IM DOING THIS FORM MEMORY
so I'm pretty sure u the arch equals twice the angle
so pi/2*2 = pi so D
hope it helppsss
trying not to dieT-T
Kaia found a common dividend (if thats the right word), a common factor that both could be divided by, and then did the distributive property backwards pretty much, taking out that common factor from each. You can't use it on that last one because eleven is a prime number (unable to be divided by anything other than one and itself), so the two numbers won't have a common dividor number thingy.
The bird on the roof of a 250 ft building landed on the ground after 25 seconds
<h3>The height of the bird is modelled as follows:</h3>
h(t) = -t² + 15t + 250
h(t) = height of the bird above the ground(ft)
t = time in seconds after leaving the roof.
Therefore, the time in seconds the bird land after leaving the roof can be calculated as follows:
h(t) = -t² + 15t + 250
0 = -t² + 15t + 250
0 = -t² + 15t + 250
t² - 15t - 250 = 0
Using quadratic formula,
a = 1
b = -15
c = -250
t = -b ±√b² - 4ac / 2a
t = -b ± √(-15)² - 4(1)(-250) / 2 × 1
t = 15 ± √225 + 1000 / 2
t = 15 ± √ 1225 / 2
t = 15 ± 35 / 2
t = 15 - 35 / 2 or t = 15 + 35 / 2
t = -20 / 2 or 50 / 2
t = -10 or 25
The time can't be negative.
Therefore, the bird landed on the ground after 25 seconds.
learn more on parabola here: brainly.com/question/24631429?referrer=searchResults
Answer:
$300
Step-by-step explanation:
hourly rate
80 / 8 = $10/hr
Working 30 hrs
30 * 10 = $300