There were 24 students.The teacher wanted the kids to break up so there were 8 groups. How many students are in each group.
anwser:8
can I see the full question but if the question asks how many liters in total add
1.25 + 2.5 + 1 = 4.75 L
Answer:
Step-by-step explanation:
Alright, lets get started.
We have given two points that are end point of diameter.
So, the center point will be :
x co-ordinate :![\frac{-8-2}{2}=-5](https://tex.z-dn.net/?f=%5Cfrac%7B-8-2%7D%7B2%7D%3D-5)
y co-ordinate : ![\frac{2+6}{2}=4](https://tex.z-dn.net/?f=%5Cfrac%7B2%2B6%7D%7B2%7D%3D4)
Hence the center is : (-5,4)
Now the distance between these two end points :
![d=\sqrt{(6-2)^2+(-2+8)^2}](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%286-2%29%5E2%2B%28-2%2B8%29%5E2%7D)
![d=\sqrt{16+36}](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B16%2B36%7D)
![d=\sqrt{52}](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B52%7D)
So radius will be half of this diameter.
![r=\frac{\sqrt{52} }{2}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B%5Csqrt%7B52%7D%20%7D%7B2%7D)
Plugging these values in standard equation of circle
![(x-x_{1} )^2+(y-y_{1} )^2=r^2](https://tex.z-dn.net/?f=%28x-x_%7B1%7D%20%29%5E2%2B%28y-y_%7B1%7D%20%29%5E2%3Dr%5E2)
![(x+5)^2+(y-4)^2=\frac{52}{4}](https://tex.z-dn.net/?f=%28x%2B5%29%5E2%2B%28y-4%29%5E2%3D%5Cfrac%7B52%7D%7B4%7D)
.................................. This is the answer
Hope it will help :)
Answer:
(d)
Step-by-step explanation:
Elimination is a good choice of solution method when the coefficient of a variable in one equation is a simple multiple of the coefficient of that same variable in the other equation. This is the case for the system in the last choice. (see attached)
__
We can consider the alternatives:
(a) substitution for y would work well
(b) the solution is given, no solution effort is required
(c) substitution for y would work well
(d) elimination would work well.
3(2x +3y) +(-6x +y) = 3(18) +(12) . . . . . eliminates x (y=6.6)
(2x +3y) -3(-6x +y) = (18) -3(12) . . . . . . eliminates y (x=-0.9)
2/8000 = 16/x....2 oz to 8000 flowers = 16 oz to x flowers
cross multiply
(2)(x) = (8000)(16)
2x = 128,000
x = 128,000/2
x = 64,000 flowers are needed