Answer:
There are 30 students in the class
Step-by-step explanation:
we can write a ratio as:
8:10 as 24:x
Writing this as an equation gives:
8
10
=
24
x
We can now solve for
x
while keeping the equation balanced:
10
x
×
8
10
=
10
x
×
24
x
10
x
×
8
10
=
10
x
×
24
x
x
×
8
=
10
×
24
8
x
=
240
8
x
8
=
240
8
8
x
8
=
30
x = 30
Answer:
The initial weight of the candle is 8 oz.
D.the candle's initial weight
Step-by-step explanation:
- the weight is 8 oz when time is 0, initial = 0 s
- the initial value represents the candles initial weight before burning it.
To find rate of change:
![\sf \frac{change \ in \ weight}{ time \ taken}](https://tex.z-dn.net/?f=%5Csf%20%5Cfrac%7Bchange%20%5C%20in%20%5C%20weight%7D%7B%20time%20%5C%20taken%7D)
take two points: (0,8),(5,7)
rate:
![\rightarrow \sf \frac{y1-y}{x1-x}](https://tex.z-dn.net/?f=%5Crightarrow%20%5Csf%20%5Cfrac%7By1-y%7D%7Bx1-x%7D)
![\hookrightarrow\sf \sf \frac{7-8}{5-0}](https://tex.z-dn.net/?f=%5Chookrightarrow%5Csf%20%5Csf%20%5Cfrac%7B7-8%7D%7B5-0%7D)
![\hookrightarrow\sf-\frac{1}{5}](https://tex.z-dn.net/?f=%5Chookrightarrow%5Csf-%5Cfrac%7B1%7D%7B5%7D)
is the rate of change.
So the problem ask to calculate the point where the CD intersect where as in the triangle ABC and AE, BR, CD are the median and AE and BF intersect at a certain point. The best answer among the question is letter D. (2,3)