Question

If QRST is a rectangle with QT=50 and RS=4x+8, find x

Answer 1

If QRST is a rectangle with QT = 50 and RS = 4x + 8, find x. 
.
QT = RS (opposite sides of a rectangle are equal)

50 = 4x + 8
42 = 4x
10.5 = x

Answer 2

Answer:

10.5 cm

Step-by-step explanation:

The rectangle is organized like this:

Q----------------------R

50                      4x+8

T-----------------------S

So you now know that QT and RS are sides similar to each other, so to finde the value of x you just put them in opposite sides of the equation:

4x+8=50

4x=50-8

4x=42

x=$\frac{42}{4}$

x=10.5

By doing this you can observe that after evaluating the equation the value of X is 10.5