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bija089 [108]
3 years ago
11

I need the answers to these question (with steps)

Mathematics
2 answers:
DiKsa [7]3 years ago
5 0

Answer:

1. -1/5

2. -y⁴

3. 5¹¹

Step-by-step explanation:

1. simplify -5^ -1

1/(-5)

-1/5

2. simplify -1/y^ -4

-1 × y⁴

-y⁴

3. simplify 5^ 4 x 5^ 7

5^(4+7)

5¹¹

coldgirl [10]3 years ago
4 0

Answer:

-5^ -1 = 1/(-5) = -1/5

-1/y^(-4) = -(1/(1/y^4)) = -y^4

5^4 x 5^7 = 5^(4 + 7) = 5^11

Hope this helps!

:)

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What would -2 - (-7) be? And how would you do that
zavuch27 [327]

Answer:

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Step-by-step explanation:

Okay, so adding negative numbers can get very tricky, but I think I can help

Since there are two negative signs next to each other, they both cancel out and become positive so instead you get

-2+7

And if you do this with a number line, if you start and negative 2 and keep going right 7 times, you get 5

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8 0
3 years ago
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LenaWriter [7]
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2. Angle A
3. Line RT
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5.Asking someone else?
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4 0
3 years ago
A multiple choice exam has 20 questions. Each question has 3 possible answers; there is no partial credit. Only 1 answer out of
amid [387]

Answer:To find out the theoretical probability of the case given, we need to make certain assumptions.

First, we'll assume that he'll attempt all of the questions, i.e he'll attempt all 10 questions.

Next assumption is that each option in each question is equally likely to be marked by the student.

This pretty much leads us to a binomial probability distribution.

Conditions are:

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   Student is equally likely to pick any outcome in any given question.

   Hence, probability of choosing correct answer is 1/4 = 0.25. Probability of choosing incorrect answer is 1–1/4 = 3/4 = 0.75.

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Now, calculation is fairly simple.

Binomial probability distribution is such that…

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Step-by-step explanation:

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3 years ago
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Mademuasel [1]

Answer:

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