Trying to make honor roll

a garden table and a bench cost $1000 combined. the cost of the garden table is three times the cost of the bench. what is the cost of the bench?

Garden Table: $750

Bench: $250

Step-by-step explanation:

Use the system of equation. Let "garden table" = x, and "bench" = y.

x + y = 1000

x = 3y

Solve for each variable. Note that x = 3y. Plug in 3y for x in the first equation:

x + y = 1000

(3y) + y = 1000

Simplify. Combine like terms:

4y = 1000

Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other. Divide 4 from both sides:

(4y)/4 = (1000)/4

y = 1000/4

y = 250

A bench = $250.

Plug in $250 for y in one of the equations:

x = 3(y)

x = 3(250)

x = 750

A garden table = $750

The cost of the bench is $250.

~

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m