28 x .15 = 4.2
28 + 4.2 = 32.2 <---- ANSWER
Hope this helps :)
F = 2t - 3
f = 2(7) - 3
f = 14 - 3
f = 11
Answer:
is outside the circle of radius of centered at .
Step-by-step explanation:
Let and denote the center and the radius of this circle, respectively. Let be a point in the plane.
Let denote the Euclidean distance between point and point .
In other words, if is at while is at , then .
Point would be inside this circle if . (In other words, the distance between and the center of this circle is smaller than the radius of this circle.)
Point would be on this circle if . (In other words, the distance between and the center of this circle is exactly equal to the radius of this circle.)
Point would be outside this circle if . (In other words, the distance between and the center of this circle exceeds the radius of this circle.)
Calculate the actual distance between and :
.
On the other hand, notice that the radius of this circle, , is smaller than . Therefore, point would be outside this circle.
I am going to explain this using the substitution method, considering it appears to be the best in this situation.
We know (from the bottom equation) that y can equal 3x+20. Using this knowledge, we substitute the y in the top equation for 3x+20. Now, we have an equation that looks like this:
3x+20=x^2+2x
Now we need to move x to one side and then do some radicals (square roots).
Subtract the 2x on the right (since it is smaller, negatives = NONONO), which will give you
x+20=x^2
Now, we take the square root of both sides to get
rad(x+20)=x
Now we have to simplify. 20 doesn't have a square root, but 4 goes into 20, and 4 has a square root of 2. This now becomes
2rad(x+5)
This doesn't simplify any further... we have a problem... no way to isolate x as far as my knowledge goes... Sorry, can't help you any further than that, but another person or your teacher might be able to. R.I.P...
Answer:
Step-by-step explanation:
3.1x10 = 31, and 9x10=90, so the fraction is 31/90, whcih equals 3.44444444 . . .