Answer:
4
Step-by-step explanation:
He should add 4 black blocks because there are a total of 4 other blocks, and in order to have a probability of 50%, the number of black blocks needs to be equal to the total number of the other colored blocks.
The answer would defintley be 69 if you want the right answer.
Electromagnets are devices that create a magnetic field through the application of electricity. Strong electromagnets are used to lift, move and drop heavy objects, such as vehicles. Electromagnets have advantages over permanent magnets. When the current is switched off, the electromagnet will lose its magnetism. The car will fall back to earth and we need that when we move cars in a junkyard. With a regular ( permanent ) magnet it would be much harder to do.
Answer: A. True
100•100 = 10,000
200•200 = 40,000
300•300 = 90,000
Explanation: maths
Answer:
5.19 for the roast beef & 2.39 for the cheese. 7.58$
10.00$-7.58$=3.42$
