To do this problem, you need to make a system of equations and let statements. Let x = the cost of a rose bush. Let y = the cost of a pot of ivy. 6x+3y =39. 2x+3y=27. Now, subtract the two equations to get 4x=12 (6x-2x,3y-3y,39-27) Now, divide both sides by 4 to get x = 3. Plug 3 in for x to solve y. 39-18=21. 21=3y. Y=7. 27-6=21. 21=3y. Y=7. I hope this helped! Sorry if it’s confusing.

4 0

3 years ago

How much time will it take for a truck to travel 20 meters if it is traveling at 4m/s

Zinaida [17]

Answer:

t = 5 seconds

Step-by-step explanation:

We have,

Speed of the truck, v = 4 m/s

It is required to find the time taken by a truck to travel 20 meters. It can be assumed that the time is t. Using the formula of speed.

$v=\dfrac{d}{t}$

After rearranging, we get :

$t=\dfrac{d}{v}\\\\t=\dfrac{20\ m}{4\ m/s}\\\\t=5\ s$

So, the time taken by a truck to travel 20 meters is 5 seconds.

5 0

3 years ago