7. The pair of figures is similar. Find x. Round to the nearest tenth if necessary.

A. 34 cm
B. 9.8 cm
C. 21.9 cm
D. 29.6 cm

Choice B

Step-by-step explanation:

When two shapes are similar their sides are always going to be proportional. So here we will set up a proportion to solve this.

Now we cross multiply

After we got an equation we solve it

Since we got a decimal we will have to round it to the place they instruct for us, on this one it is 9.8 cm so it is choice b.

hi! i think the answer is 1/2 : )

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!