Whoch expression is equivalent to -20 - (-4)
2 answers:
You might be interested in
Answer:
B. 10
Step-by-step explanation:
First, we need to recognize that the two triangles are similar (the triangle with a leg value of 21 and the triangle with a leg value of 4 and hypotenuse x)
Let's first label the leg of the second triangle as y.
Then, we can set up this equation
Cross multiplying gives us
84=y^2
So, y=sqrt(84) or 2 sqrt(21).
Now, using the pythagorean theorem, we get
4^2+2sqrt(21)^2=x^2
100=x^2
x=10
so hmm whatever "p" and "c" are, we know that p + c = 10.
and we also know that 3p + 2.2c = 25
thus
how much will it be needed for caramel popcorn? well, c = 10 - p.