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3 years ago

Largest number you can make using 1 3 5 4 7

Mathematics

2 answers:

Mariana [72]3 years ago

4 0

75431? I think it is becuz I did it in greatest to smallest

Aloiza [94]3 years ago

3 0

I believe that the largest number that can be made using the scheme would be to simply turn it backwards, if thats not the case you can start with the 7 and add anything thats second biggest for the effect if it's going to be a 10's place number, such as 75, if your goal is bigger you can reach 75413

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Scores of an IQ test have a bell-shaped distribution with a mean of and a standard deviation of . Use the empirical rule to det

Oduvanchick [21]

Complete question is;

Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 13. Use the empirical rule to determine the following.

(a) What percentage of people has an IQ score between 87 and 113?

(b) What percentage of people has an IQ score less than 74 or greater than 126?

Answer:

A) 68% of the people had an IQ score between 87 and 113

B) 5% of the people had IQ scores less than 74 and greater than 126.

C) 0.15% had an IQ score greater than 139

Step-by-step explanation:

We are given;

Mean; x¯ = 100

Standard deviation; σ = 13

According to the empirical rule in statistics;

>> 68% of the data lies within one standard deviation of the mean

>> 95% of the data lies within two standard deviations of the mean

>> 99.7% of the data lies within three standard deviations

A) We want to find the percentage of people with an IQ score between 87 and 113.

Within one standard deviation, we have;

x¯ ± σ

>> (100 - 13), (100 + 13)

>> (87, 113) which is the range we are looking for.

Thus, 68% of the people had an IQ score between 87 and 113

B) we want to find percentage of people has an IQ score less than 74 or greater than 126.

Let's first find those who had between 74 and 126.

Let's use two standard deviations within the mean.

x¯ ± 2σ

>> (100 - (2×13)), (100 + (2×13))

>> (74, 126) which is the range we are looking for.

So percentage that have IQ scores between 74 and 126 is 95%

Thus;

Percentage of those who had less than 74 and greater than 126 is;

P = 1 - 95%

P = 5%

C) we want to find the percentage of people that had an IQ score greater than 139.

Let's use the z-score formula;

z = (x¯ - μ)/σ

z = (139 - 100)/13

z = 39/13

z = 3

This means it is 3 standard deviations above the mean.

Thus;

Since it's one side outside the mean, then;

Percentage of people with an IQ score greater than 139 = (1 - 99.7%)/2 = 0.3%/2 = 0.15%

5 0

3 years ago

A square garden plot has an area of 24 ft2.

strojnjashka [21]

The area of a square is equal to the side squared.
$s^2=A$

We can plug in 24 for A and then take the square root of each side to find s.
$s^2=24 \\ s=\sqrt{24}$

We can simplify √24.
The prime factorization of 24 is 2×2×2×3.
Since we have 2×2 inside the radical we can simplify to have 2 outside the radical.
$\sqrt{24}=\sqrt{4\times6}=\boxed{2\sqrt{6}\ ft}$

We can then use a calculator to find an approximate decimal value for 2√6.
(You could technically calculate it by hand using the Babylonian method, I don't think you're expected to do that, though)
$2\sqrt{6}\approx\boxed{4.9\ ft}$

6 0

3 years ago

I need help and fast

marysya [2.9K]

I think it's B but if I where you I would wait until someone else comments on here to so you know for sure

8 0

3 years ago

Read 2 more answers

One quart is approximately equal to 0.95 liter. To convert quarts to liters, which operation should you use?

Butoxors [25]

Answer:

the operation we use to convert quarts to liters : multiply

Step-by-step explanation:

One quart is approximately equal to 0.95 liter

Here quart is the larger unit and liter is the smaller unit

To convert larger unit to smaller unit we multiply

given that 1 quart = 0.95 liter

2 quart = 2 times 0.95

3 quart = 3 times 0.05

so to convert quart of liter we multiply

the operation we use to convert quarts to liters we multiply by 0.95

8 0

3 years ago

C. Explain why 32 percent is equivalent to

11Alexandr11 [23.1K]

Answer: 32% is equal to 32/100.

Step-by-step explanation: This is because 32% is also equal to 0.32. Percents are evaluted with the fraction denominator 100. 32/100 is also 32 parts out of 100 parts. This expression represents 32%.

6 0

3 years ago