Answer:
b
d
e
Step-by-step explanation:
the standar form is
![ax^{2} +bx+c=0](https://tex.z-dn.net/?f=ax%5E%7B2%7D%20%2Bbx%2Bc%3D0)
so it's
![0.5x^{2} -3.2x+5.8=0\\\\-x^2-3x+20=0\\\\\frac{1}{2}x^2+4x-3=0\\\\](https://tex.z-dn.net/?f=0.5x%5E%7B2%7D%20-3.2x%2B5.8%3D0%5C%5C%5C%5C-x%5E2-3x%2B20%3D0%5C%5C%5C%5C%5Cfrac%7B1%7D%7B2%7Dx%5E2%2B4x-3%3D0%5C%5C%5C%5C)
only that
Answer:
A. 3/8 of an hour
Step-by-step explanation:
if she is not a slacker
<u>Answer:</u>
The range of the function y = 2cos x is -2 <y < 2 .
<u>Step-by-step explanation:</u>
We know that cos (0) = 1 and cos (π) = - 1 are the two extreme values which cos x assume when x ∈ R and it is also that cos (x) is a continuous periodic function with period 2π when x ∈ R ,
since ,
cos (x + 2π) = cos x
So, the range of the function y = 2cos x is -2 <y < 2 .
Answer:
yes
Step-by-step explanation:
So first I would say, what if all of them were dimes, how far away would it be from $14?
So 92 coins * 10 cents = $9.20
So it's 4.80 dollars away from 14 dollars.
So if we were to switch one to a quarter, it would increase by 0.15 cents.
So we want to see how many increases we need to reach 4.80 dollars more.
4.80/0.15 = 32
So there are 32 quarters and 60 dimes.