If f(x) = 7 + 4x and g (x) = startfraction 1 over 2 x endfraction, what is the value of (startfraction f over g endfraction) (5)? eleven-halves startfraction 27 over 10 endfraction 160 270

= 270 ⇒ Last answer

Step-by-step explanation:

* If f(x) = 7 + 4x

* If g(x) =

* We want to find

- Lets find at first

∵ f(x) = 7 + 4x

∵ g(x) =

∴

- Lets divide the numerator by the denominator

∵ The numerator is 7 + 4x

∵ The denominator is

∴ (7 + 4x) ÷

- Lets reverse the division sign to multiplication sign and reciprocal

  the fraction after the division sign

∴ (7 + 4x) ×

∴ = 2x(7 + 4x)

∴ = 14x + 8x²

- Now substitute x by 5

∴   = 14(5) + 8(5)² = 70 + 200 = 270

∴   = 270

to apply for that college regardless of the sat aveage

step-by-step explanation:

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".