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kenny6666 [7]
3 years ago
9

Please help me with this

Mathematics
1 answer:
hodyreva [135]3 years ago
5 0

Answer:

1.) The quotient of a number and 2 = x ÷ 2

2.) A number decreased by 2 = x - 2

3.) 2 times a number = 2x

4.) 2 increased by a number = 2 + x

Step-by-step explanation:

Let's look for key words hidden in these sentences:

1.) The <u>quotient</u> of a number and 2 = The word quotient refers to division

2.) A number <u>decreased</u> by 2 = The word decreased refers to subtraction

3.) 2 <u>times</u> a number = the word times refers to multiplication

4.) 2 <u>increased</u> by a number = the word increased refers to addition

Hope this helps!

You might be interested in
Ok sorry let me put it this way.... Millie has 15 counters Tom has 8 counters how would you do a Comparison? On how much each co
hodyreva [135]
Yes because 15+8=23 divide that into a number that could each child have and just make it into equal amounts
7 0
3 years ago
Read 2 more answers
Because not all airline passengers show up for their reserved seat, an airline sells 125 tickets for a flight that holds only 12
melamori03 [73]

Answer:

98.75% probability that every passenger who shows up can take the flight

Step-by-step explanation:

For each passenger who show up, there are only two possible outcomes. Either they can take the flight, or they do not. The probability of a passenger taking the flight is independent from other passenger. So the binomial probability distribution is used to solve this question.

However, we are working with a large sample. So i am going to aproximate this binomial distribution to the normal.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

The probability that a passenger does not show up is 0.10:

This means that the probability of showing up is 1-0.1 = 0.9. So p = 0.9

Because not all airline passengers show up for their reserved seat, an airline sells 125 tickets

This means that n = 125

Using the approximation:

\mu = E(X) = np = 125*0.9 = 112.5

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{125*0.9*0.1} = 3.354

(a) What is the probability that every passenger who shows up can take the flight

This is P(X \leq 120), so this is the pvalue of Z when X = 120.

Z = \frac{X - \mu}{\sigma}

Z = \frac{120 - 112.5}{3.354}

Z = 2.24

Z = 2.24 has a pvalue of 0.9875

98.75% probability that every passenger who shows up can take the flight

7 0
3 years ago
How do you solve 216 - 202?? -explained-
Serhud [2]

Answer: 216 - 202 = 14

Step-by-step explanation:

It’s 14 because in my way, I separated the numbers, like this:

200 - 200 = 0

16 - 2 = 14

Since 0 is equal to nothing, the answer is 14.

6 0
3 years ago
How to do 4.75 divided by 5
vekshin1

Answer:

0.95

Please Mark Brainliest If This Helped!

4 0
2 years ago
A cube is packed with decorative pebbles. If the cube has a side length of 6 inches, and each pebble weighs on average 0.5 lb pe
Rudik [331]
The volume of the cube is 6*6*6 (in cubed)=216 (in cubed).

    in 1 cubic inch, there is 0.5 lb of weight

so in 216 cubic inch, there are 216*0.5 lb = 108 lbs of weight  

Answer: 108 lbs
8 0
3 years ago
Read 2 more answers
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