Answer:
3x-x+2=4
Step-by-step explanation:
Answer:
The area under the density curve is equal to 100 percent of all probabilities. As we usually use decimals in probabilities you can also say that the area is equal to 1 (because 100% as a decimal is
I'm not sure if this is the easiest way of doing this, but it surely work.
Let the base of the triangle be AB, and let CH be the height. Just for reference, we have

Moreover, let CH=y and BC=z
Now, AHC, CHB and ABC are all right triangles. If we write the pythagorean theorem for each of them, we have the following system

If we solve the first two equations for y squared, we have

And we can deduce

So that the third equation becomes

(we can't accept the negative root because negative lengths make no sense)
Melanie’s sister read a greater fraction:
melanie
45/100 = 45%
melanie’s sister
5/10 = 50%
50% > 45%
Total of 25 cakes
Tina : placed 0.24.....24%
Dora : placed 9 out of 25.....9/25 = 36%
Wilson : placed 20%
Kane: placed the remainder ...100% - (24% + 36% + 20%) = 20%
Dora placed the most