Answer:
18 miles
Step-by-step explanation:
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Answer:
11) 195312
13) 5461
Step-by-step explanation:
11)
15÷(-3) = -5
(-75)÷15 = -5
375÷(-75) = -5
It’s clear that the common ratio of this geometric sequence is -5
Then using the sum formula for geometric sequences :
……………………………………………………
13)
Answer:
The perimeter is doubled.
Step-by-step explanation:
Let's pretend we have a triangle with side measurements p,q, and r.
The perimeter will be the sum of the side measurements of this triangle which is p+q+r.
If we decide to dilate the figure by a factor of 2, then we are multiply each side by 2. So the perimeter of the new triangle becomes 2p+2q+2r.
Factoring this gives us 2(p+q+r). The perimeter has doubled.
The same thing would happen if we look at a quadrilateral. There would be 4 measurements multiplied by 2 and you would factor out the 2 giving you 2(old perimeter) for the new perimeter of the dilated shape.
The angle is 162 degrees. Work shown in picture:)
His answer is not reasonable because the decimal is misplaced. The actually answer is 21.5564, all he did was move the decimal place over.