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3 years ago

Please help me with this!! 18 points!!

Mathematics

1 answer:

olasank [31]3 years ago

6 0

Answer:

Step-by-step explanation:

20 is 8x8^5=262144 (8x8)^5= 1073741824 so they are not the same

21 is (3^2)^-3 = 0.001372 (3^3)^-2=0.001372 THEY ARE NOT THE SAME

okay thats

all i got its a bit hard to read for me sorry

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Tony took a math quiz last week. There were 80 problems on the quiz and Tony answered 70% of them correctly. How many problems d

Nutka1998 [239]

Answer:

56 problems

Step-by-step explanation:

So we already know that the answer is: 56. However, a good help is knowing how to obtain this answer from the data provided.

Tony's quiz had 80 questions

Tony correctly answered 70% of them.

We can always write a percentage amount as a ratio by dividing the amount by 100.

$70\% = \frac{70}{100} = 0.7$ .

This means that for every 100 questions, tony will respond correctly 70.

So, if Toni did a questionnaire of n questions, the amount that will answer correctly is calculated by the following expression:

$C = n*\frac{70}{100}$

If $n = 80$ then:

$C = 80 * \frac{70}{100}\\\\C = 56$

7 0

3 years ago

Read 2 more answers

2(b+3)=2 solve and check solution

Alexxandr [17]

2(b+3) = 2
2b + 6 = 2 ( -6 )
2b = -4 ( / 2)
b = -2

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4 years ago

In one jar, I have two balls labelled 1 and 2 respectively. In a second jar, I have three balls labelled 0, 1 and 2 respectively

PolarNik [594]

Step-by-step explanation:

this is a kind of trick question, actually.

with whatever we draw, we produce X values as power of 3.

to be precise, we can have only

3⁰ = 1

3¹ = 3

3² = 9

3⁴ = 81

due to the possible combinations of drawn numbers (e.g. 3 cannot be created by a multiplication of 0s, 1s and 2s).

so, mostly, these results cannot be exact factors of 1024.

1024 cannot be divided by 3, nor by 9 nor by 81.

but 1024 is a multiple of 1 (as is every number).

so, we are looking at the probability to get 0 as multiplication result of the numbers on the 2 drawn balls.

the only possibilities are

1 and 0

2 and 0

out of in total 6 (2×3) different outcomes

1 and 0

1 and 1

1 and 2

2 and 0

2 and 1

2 and 2

the probability of this "0" event is again

number of desired outcomes / number of possible outcomes = 2/6 = 1/3

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3 years ago

Which of the following could be the equation of a parallel to the line y=4?

malfutka [58]

Answer:

y = 0 is parallel to y= 4 ..plz mark my answer as brainlist plzzzz if correct

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3 years ago

The measure of one angle in a regular octagon is

antiseptic1488 [7]

Answer:45 degrees

Step-by-step explanation:

360/8 sides =45

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3 years ago