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Mathematics

1 answer:

joja [24]3 years ago

8 0

Answer:

The answer would be B.

Because if you multiply all the numbers of ABC then go through the list of the A'B'C' options only B matches up

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384,000 in scientific notaion

bixtya [17]

Answer: 3.84 · 10^5

Step-by-step explanation:

8 0

3 years ago

Joel needs 785 tickets to get the prize he wants at the arcade. He already has 284 tickets and can earn 35 tickets each time he

Cloud [144]

He needs to play 23 more times. 785 / 35 = 23

He will have extra points but it will be enough to get the prize.

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3 years ago

bella types at a constant rate of 42 per minute. is the number of words she can type proportional to the number of minutes she t

Ksivusya [100]

Yes I think so because she write 42 per minute the question doesn't tell you anything else.
I am not sure :(

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3 years ago

Hi, the answer is K but can anyone show why

dlinn [17]

Let's do 51 and 52.

51. The contrapositive has the same truth value as the original statement. That's opposed to the converse, which may or may not be true independent of the original statement.

The contrapositive of IF P THEN Q is IF not Q THEN not P. They're equivalent. Here that's If the cat is not female then it is not tricolor.

Answer: C

52.

$(x^3)^{(4-b^2)}=1$

$x^{3(4-b^2)} = 1$

For the statement to be true, the exponent must be zero:

$3(4-b^2) = 0$

$b^2 = 4$

$b = \pm 2$

Both positive 2 and negative 2 have a square of 4.

Answer: K

By the way, usually we assume $0^0=1$ so the restriction that $x \ne 0$ isn't really necessary. Think of the definition of a polynomial or the binomial expansion: