Answer:
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.
Answer:
48
Step-by-step explanation:
18 less than half a number is 6.
So this is the formula:
X/2 - 18 = 6.
You can add 18 to 6.
X/2 = 24.
You can now multiply by 2.
X=48
Answer:
n = 6.4
Step-by-step explanation:
1. undo the positive 8.7 and subtract from 15.1
2. n = 6.4
Everything you need is attached below.