200+40=240
each train cost 10
take 240/10=24trains
Answer:
2x-4 would be the expression simplified.
Step-by-step explanation:
5(x-2) = 5x-10
-3x(x-2) = -3x +6
Combine them by addition 5x-10+-3x+6
2x-4
Answer:
7,11
Step-by-step explanation:
The width is x. x+4= the length. The area is side times side, so it’s
x × (x+4) = 77
We can simplify this to:
x × x + x × 4 = 77
x^2 + 4x = 77
x^2 + 4x - 77 = 0 This is a quadratic equation. So we can solve using the quadratic formula:
x = 
->
That’s the positive solution and that’s x, the width. So the width is 7 and the length is 7+4=11
The amount that will be in the account after three years is $1,254.00.
Using this formula
B = P+ ( P x R x T)
Where:
B=Amount ?
P=Principal=$1,200
r=Rate=1.5% or 0.015
T=Time=3 years
Let plug in the formula
B=$1,200+($1,200×0.015×3)
B=$1,200+$54
B= $1,254.00
Inconclusion the amount that will be in the account after three years is $1,254.00.
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brainly.com/question/20348538
