Answer:
v = ± 5
Step-by-step explanation:
given 5v² - 125 = 0 ( add 125 to both sides )
5v² = 125 ( divide both sides by 5 )
v² = 25 ( take the square root of both sides )
v = ±
= ± 5
First we have to answers stand that speed is equivalent to the distance traveled in a certain time span. That is speed = distance/time. Conversely, time = distance/speed. We are asked to find the speed going home given, distance, total time and speed going to school. We can answer this equation by adding the time Aidan is spending going and coming back from school
t = (distance to school)/(speed to school) + (distance to home)/(speed to home)
1hour = (16)/(40) + (16)/(speed to home)
Speed to home = 26.67miles/hour
Answer:
u ≈ 5.7
Step-by-step explanation:
Using the Sine rule in Δ TUV, that is
=
, substitute values
=
( cross- multiply )
u × sin26° = 2.5 × sin85° ( divide both sides by sin26° )
u =
≈ 5.7 ( to 1 dec. place )
You can only make 4 liters of lemonade. So that means no.
Answer:
111 pieces of soda
Step-by-step explanation:
step 1
Find the area of the rectangular backyard
The area of the rectangular backyard is equal to

where


substitute


step 2
Find the area of one piece of sod
The area of the rectangular piece of sod is

where


substitute

step 3
Find the pieces of sod needed
To find out how many whole pieces of sod will Jim need to buy to cover his backyard, divide the area of the backyard by the area of one piece of soda
so

Round up
111 pieces of soda