Answer:Okay I'm really confused
Step-by-step explanation:
3c(5+c) -2(3c-7)
15c+3c^2-6c+14
9c+3c^2+14
Answer:
52.8 feets
Step-by-step explanation:
From the diagram :
The height of tree woulb be :
Height above the ground (at breakpoint) + hypotenus
Hypotenus, h cab be obtained using Pythagoras rule :
h² = opp² + adj²
h² = 39² + 12²
h² = 1665
h = sqrt(1665)
h = 40.804 feets
Height of tree to the nearest tenth ;
40.804 feets + 12 feets
= 52.804 feets
= 52.8 feets
Answer:


Step-by-step explanation:
Let x represent number of small candles and y represent number of large candles.
We have been given that Jonah needs to buy at least 20 candles. This means number of small and large candles should be greater than or equal to 20. We can represent this information in an inequality as:

We are also told that small candles cost $3.50, so cost of x small candles would be
.
Since large candles cost $5.00, so cost of y large candles would be
.
We are told that Jonah cannot spend more than $80, this means cost of x small candles and y large candles should be less than or equal to $80. We can represent this information in an inequality as:

Therefore, our required system of inequalities would be:


10 = 2y + 4
6 = 2y
y = 3
18 = 10 + 2x
8 = 2x
x = 4