Use a^2 + b^2 = c^2
the triangle must be isosceles because the two angles are the same
1.2^2 + 1.2^2 = x^2
1.44 + 1.44 = x^2
2.88 = x^2
x=6√2/5
or
x ≈1.69706
Answer:
9 mph
Step-by-step explanation:
-let x be the speed of current and t be time. The speed equation for both directions can then be represented as:
![Speed=\frac{Distance}{Time}\\\\\#Upstream\\(u-6)t=9\\\\\#Donwstream\\\\(u+6)t=45](https://tex.z-dn.net/?f=Speed%3D%5Cfrac%7BDistance%7D%7BTime%7D%5C%5C%5C%5C%5C%23Upstream%5C%5C%28u-6%29t%3D9%5C%5C%5C%5C%5C%23Donwstream%5C%5C%5C%5C%28u%2B6%29t%3D45)
#Since t is equal in both, we can do away with t.
#We the divide the downstream equation by the upstream equation as:
![\frac{u+6}{u-6}=\frac{45}{9}\\\\(u+6)=5(u-6)\\\\u+6=5u-30\\\\4u=36\\\\u=9](https://tex.z-dn.net/?f=%5Cfrac%7Bu%2B6%7D%7Bu-6%7D%3D%5Cfrac%7B45%7D%7B9%7D%5C%5C%5C%5C%28u%2B6%29%3D5%28u-6%29%5C%5C%5C%5Cu%2B6%3D5u-30%5C%5C%5C%5C4u%3D36%5C%5C%5C%5Cu%3D9)
Hence, the boat's speed in still water is 9 mph
Well, since the graph starts at (0,50), making our y-intercept 50, we can knock off D as an option.
The next step is to find the slope. To do this, find two points and subtract the y values over the x values. (Just make sure that whichever y value you start with - start with the same x value).
So we have >>> (50, 200) and (0,50) from earlier.
200 - 50 / 50 - 0 = 150/50 or 3/1, or 3.
This makes the correct answer A since the equation is represented as y = mx + b, where m is the slope and m has a value of 3.
A:
2t
t is the number of toys
b:
(p+12)/16
p is the price
Answer:
19/5
Step-by-step explanation:
i used a calculater