Answer:
Step-by-step explanation:
pythagoras theorem
a^2+b^2=c^2
12^2+x^2=13^2
144+x^=169
x^2=169-144
x=![\sqrt{25](https://tex.z-dn.net/?f=%5Csqrt%7B25)
x=5 km
4+4 is 8 so 4+5 is 9.So the strategy is a double +1. That is the strategy.
Answer:
Part 1) The speed is ![211.2\frac{ft}{sec}](https://tex.z-dn.net/?f=211.2%5Cfrac%7Bft%7D%7Bsec%7D)
Part 2) ![2,112\ ft](https://tex.z-dn.net/?f=2%2C112%5C%20ft)
Step-by-step explanation:
Part 1
<em>What is this speed on feet per second?</em>
we know that
1 hour=60 min
1 min=60 sec
so
1 hour=60*60=3.600 sec
1 mi=5,280 ft
we have
![144\frac{mi}{h}](https://tex.z-dn.net/?f=144%5Cfrac%7Bmi%7D%7Bh%7D)
Convert mi/h to ft/sec
![144\frac{mi}{h}=144\frac{(5,280)}{(3,600)}=211.2\frac{ft}{sec}](https://tex.z-dn.net/?f=144%5Cfrac%7Bmi%7D%7Bh%7D%3D144%5Cfrac%7B%285%2C280%29%7D%7B%283%2C600%29%7D%3D211.2%5Cfrac%7Bft%7D%7Bsec%7D)
Part 2
At this speed how many feet will the parachutists fall during 10 seconds on free fall?
Multiply the speed by the time to obtain the distance
so
![211.2\frac{ft}{sec}(10\ sec)=2,112\ ft](https://tex.z-dn.net/?f=211.2%5Cfrac%7Bft%7D%7Bsec%7D%2810%5C%20sec%29%3D2%2C112%5C%20ft)
Answer:
the leaf is 8 meters away from the tree
Step-by-step explanation:
we can think of this problem as a right triangle where height represents a leg, and what flew the bird represents the hypotenuse
then we would have to find the other leg
for this we can use Pythagoras
h = hypotenuse = 17 meters
l1 = leg1 = 15 meters
l2 = leg2 = ?
h² = l1² + l2²
17² = 15² + l2²
17² - 15² = l2²
289 - 225 = l2²
64 = l2²
√64 = l2
8 = l2
the leaf is 8 meters away from the tree
Hi there!
Answer:
<u><em>x=-56 and -56=x</em></u>
Step-by-step explanation:
addition property of equality is adding the same number both sides of an equation does not change the equation.
subtraction property of equality is subtraction the same number from both sides of an equation does not change the equation.
subtract by 6 both sides of an equation.
x+6-6=-50-6
simplify.
-50-6=-56
50+6=56
56-6=50
x=-56 and -56=x
Hope this helps!
-Charlie
Have a great day!