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3 years ago

Does anyone know what the 5√2 (simplify radicals)?

Mathematics

1 answer:

maks197457 [2]3 years ago

8 0

Answer:

5√2 is as simple as it gets

5√2 ≈ 7.071068

Step-by-step explanation:

One simplifies radical expressions by removing from under the radical any squares that might be there. 2 is a prime number, so has no square factors. The simplest form of this radical expression is the one given:

5√2

Your calculator can tell you the value of this irrational number is about ...

5√2 ≈ 7.071068

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jamar bought a bicycle that cost 20 dollars when it was new. if he eventually sold it for 10%of the original cost,how much was i

dangina [55]

Answer:

Step-by-step explanation:

We're trying to find out 10% of the price of a bicycle

to do this, convert 20 to 0.20 and multiply it by 10%

0.20 × 10 = $2

it was sold for $2

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3 years ago

Use the frequency distribution, which shows the number of American voters (in millions) according to age, to

a_sh-v [17]

Answer:

The probability that a voter chosen at random is in the 18 to 20 years old age range is = 4.2/ 134.8= 0.0311572

Step-by-step explanation:

We can find the probability by simply dividing the frequency of the ages range of 18-20 by the total frequency.

Ages Frequency

18 to 20 4.2

21 to 24 7.8

25 to 34 20.8

35 to 44 23.7

45 to 64 50.1

65 and over 28.2

∑ 134.8

The probability of an event is given by the occurrence of an event by the total occurrences .

Here the occurrence of ages 18-20 is given by 4.2

and the total frequency is 134.8

The probability that a voter chosen at random is in the 18 to 20 years old age range is = 4.2/ 134.8= 0.0311572

7 0

3 years ago

Jorge 5 miles every 6 hours find slope and unit rate

Slav-nsk [51]

Answer : 30
Reason : bc 5 x 6 = 30

5 0

3 years ago

Can someone explain how to do this

Cloud [144]

I'm pretty sure its a^2+b^2=C^2

4 0

3 years ago

Read 2 more answers

100 POINTS! College Statistics

kirza4 [7]

(a) Collision claims tend to be skewed right because there are a few very large collision claims relative to the majority of claims.

These large collision claims skew the data to the right because they are outliers that draw the mean higher than it should be.

The answer cannot be "no large collision claims" or "many large collision claims" because then the data would not be skewed.

(b) Since there are two random samples comparing two means, we will be using a 2-Samp-T-Test. We will use Welch's approximate t-test, where we test the hypothesis that these two populations have the same mean.

We want to determine if 20-24 year old drivers have the same mean collision cost as 30-59 year old drivers.

(c) The null hypothesis is that the mean claim of collision costs for 20-24 year old drivers is the same as the mean claim of collision costs for 30-59 year old drivers.

We can also rewrite this as:

H₀: μ₁ = μ₂
where μ₁ is the mean collision claims for 20-24 year old drivers
and μ₂ is the mean collision claims for 30-59 year old drivers

The alternative hypothesis is that the mean claim of collision costs for 20-24 year old drivers is higher than the mean claim of collision costs for 30-59 year old drivers.

We can rewrite this as:

H₁: μ₁ > μ₂
Our variables have already been defined

(d) In order to calculate the p-value, we must find the test statistic first.

We can do so by using this formula:

$\displaystyle t=\frac{x_1-x_2}{\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2} }}$

We are given these variables in the problem:

$x_1=4590$
$s_1=2302$
$x_2=3670$
$s_2=2029$
$n_1=40$
$n_2=40$

Substitute these variables into the formula for the test statistic.

$\displaystyle t=\frac{4590-3670}{\sqrt{\frac{2302^2}{40} +\frac{2029^2}{40} } }$

You can use the calculator to solve this expression, or plug the numbers into your calculator using: STAT - TESTS - 4:2-SAMPTTEST.

Your test statistic should be: t = 1.8962.

The calculator should also tell you the p-value; p = .0308.

(e) Since p = .0308 < α = .1, reject the null. We have convincing statistical evidence that the mean claim of collision costs for 20-24 year old drivers is higher than the mean claim of collision costs for 30-59 year old drivers.

4 0

2 years ago