Answer:
6 times
Step-by-step explanation:
If Andrea jumps 5 times every 45 minutes, she will jump 1 time every 9 minutes. 54 divided by 9=6 times. Hope it helps!
Answer:
See below
Step-by-step explanation:

Because the image is two reflected triangles, the sides will be the same meaning ∆ AMC ≈ ∆ BMC must be true. M is also the same for both, due to it being the reflected side.
Answer:
5040 possible arrangements
Step-by-step explanation:
Given

Required
Possible arrangements
The 1st can be placed in any 7 positions
The 2nd, in 6 positions
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--
-
Up till the last in 1 position
So, the number of arrangements is:


<span><span><span>x = ± 2</span></span><span><span>Then the solution is </span><span>x = ± 2</span></span><span><span>hope this helps</span></span></span>