Answer:
should be (4a-5)x(4a+5)
Step-by-step explanation:
Answer: the answer is 6ft
Step-by-step explanation:
3 times 1 times 2 = 6ft
For this case, the first thing to do is to observe that the figure is symmetrical with respect to the FH axis.
Therefore, the following lengths are the same:

So, by equalizing both sides we have:

From here, we clear the value of m.
We have then:


Answer:
The value of m is given by:

We add up all those numbers (excluding 30) and divide by the number of numbers (9). This results in 78.8 (round up to 79).
79-74 = 5. So the mean has increased by 5 points. (C)
148, 6-1.75=5.25, then.... 625/5.25& round up.... its 148.