I think it is c because it is going up
Answer:The way to answer this would be to show you a calculator's answer
Step-by-step explanation:
https://www.calculator.net/triangle-calculator.html?vc=45&vx=&vy=20&va=90&vz=&vb=45&angleunits=d&x=62&y=20
Answer:
a. 1/26 , 3.8462%
b. 2/3, 66.7%
c. 1/6, 16.67%
Step-by-step explanation:
a. There are 54 cards in a standard deck, and 4 of each card
b. There are 6 possible numbers, and 4 are less than five
Use this systems of equations to solve:
x = first antifreeze
y = second antifreeze
![\left \{ {{.2x + .12y = .18(15)} \atop {x + y = 15}} \right.](https://tex.z-dn.net/?f=%20%5Cleft%20%5C%7B%20%7B%7B.2x%20%2B%20.12y%20%3D%20.18%2815%29%7D%20%5Catop%20%7Bx%20%2B%20y%20%3D%2015%7D%7D%20%5Cright.%20)
Isolate y.
x + y = 15
Subtract x from both sides.
y = -x + 15
Substitute y into the other equation.
.2x + .12(-x + 15) = .18(15)
Simplify.
.2x - .12x + 1.8 = 2.7
Subtract 1.8 from both sides.
.08x = .9
Divide both sides by .08
x = 11.25
Substitute x in the equation that we isolated y in.
y = -11.25 + 15
y = 3.75
11.25 L of the first antifreeze and 3.75 L of the second.
R=-3
r=-12
one of them is the answer