regular octagon rotates 360° about its center. How many times does the image of the octagon coincide with the preimage during th
1 answer:
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Answer:
Step-by-step explanation:
the Pythagorean theorem is
c is the hypotenuse which is the side opposite of the right angle
plug the numbers into the Pythagorean theorem
when squaring a square root, just take the number in the radical and get rid of the radical
subtract 26 from both sides
find the square root of 143
143 is prime so it can just be written as
Answer:
8.4 dollars
Step-by-step explanation:
The error is in the resolution of the proportion. In fact, the initial proportion is correct:
where x is the total cost. However, the following step of the resolution is wrong. In fact, the correct resolution is the following:
- Multiplying by x on both sides:
- Multiplying by 3.5 no both sides:
And now we can find x:
So, the total cost is 8.4 dollars.