4680 - 520 = 4160
4160/2 = 2080$ this is the answer
The diagonal of a rectangle is:
d ^ 2 = w ^ 2 + l ^ 2
Where,
w: width
l: long
Substituting values we have:
(l + 2) ^ 2 = (l-7) ^ 2 + l ^ 2
Rewriting we have:
l ^ 2 + 4l + 4 = l ^ 2 -14l + 49 + l ^ 2
l ^ 2 -14l + 49 - 4l - 4 = 0
l ^ 2 -18l + 45 = 0
(l-15) (l-3) = 0
The solutions are:
l = 15
l = 3
The viable solution is:
l = 15
Thus, the width is:
w = l-7
w = 15-7
w = 8
Answer:
the dimensions of the rectangle are:
l = 15
w = 8
<u>Assuming that k is variable:</u>
6k - 6²
<u>Assuming that 3k represents 3000:</u>
426×7
Answer:
question number 2 is correct
question number 3 is incorrect the answer is 89
question number 4 is correct
question number 5 is incorrect the answer is 31
question number 6 is correct
Answer:
b=bh
Step-by-step explanation:
