I need help with this please

Mathematics

1 answer:

Vitek1552 [10]3 years ago

7 0

The answer to 8a. is 17, the answer to 8b. is 3.9, the answer to 8c. is 1 / 2, the answer to 8d. is 7 7 / 8, the answer to 9a. is commutative property, the answer to 9b. is multiplicative identity property, the answer to 9c. is associative property, and the answer to 9d. is additive inverse property.

Regarding the whole "explain using mental math" thing, I pretty much just used the fact that 8a. and 8b. both had the same number of decimal places. For 8c., I just made each number have a denominator of 10. And last, for 8d., all of the denominators were already the same, which made it pretty easy. I apologize for this section of my answer being so informal lol, I haven't had to do these kinds of problems in like 5 years <span />

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If Myron receives 10 votes from his class of 25 students what percentage does he receive

Vsevolod [243]

Answer:

Myron received 40% votes.

Step-by-step explanation:

Myron receives 10 votes from his class of 25 students and we have to calculate the percentage of the vote received.

Now we will use unitary method to calculate the percentage.

∵ Out of 25 students Myron received votes of = 10 students

∴ Out of 1 student Myron received votes = 10/25 students

∴ Out of 100 students Myron received votes = 10×100/25 = 40%

Myron received 40% votes.