2 years ago

Evaluate 7^2 + (4x5) - 2^3

Mathematics

1 answer:

Phoenix [80]2 years ago

7 0

So it would be 49+(20)+8

= 77

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Answer:

Step-by-step explanation:

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2 years ago

A juice company produces 8,064 cartons of juice in 21 days. Each day, they produced the same number of cartons and delivered tho

KatRina [158]

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2 years ago

Read 2 more answers

If you flip a fair coin 7 times, what is the probability that you will get exactly 4 tails?

andre [41]

Probability that you will get exactly 4 tails, if you flip a fair coin 7 times is: $\frac{35}{128}$

Step-by-step explanation:

We need to find the probability that you will get exactly 4 tails, if you flip a fair coin 7 times.

This is the combination question.

The total combinations will be: 2^7=128

Now, finding number of ways we can get exactly 4 tiles:

We will use the formula:

$^nC_k=\frac{n!}{k!(n-k)!}$

in our given question, n= 7, k= 4

Putting values:

$^nC_k=\frac{n!}{k!(n-k)!}\\^7C_4=\frac{7!}{4!*3!}\\ ^7C_4=\frac{7*6*5*4!}{4!*3!}\\ ^7C_4=\frac{7*6*5}{6}\\ ^7C_4=35$

So, Probability that you will get exactly 4 tails, if you flip a fair coin 7 times is: $\frac{35}{128}$

Keywords: Probability

Learn more about Probability at:

#learnwithBrainly

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2 years ago

Dana and her 4 friends are going on a camping trip. Dana wants to see how much fruit she can share so everyone will get the same

kupik [55]

I agree that the answer is 6. 30÷5=6

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2 years ago

You have determined that a statistical study is biased. What does this mean? A. Errors were made in data collection. B. Particip

Natasha2012 [34]

Answer:

Participants were lead to respond in a specific way.

Explanation:

Bias (the verb) is to show influence or prejudice about a certain thing and can cause people to change how they act or what they do.

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2 years ago