3 years ago

At Ravi's house, 7/10

Mathematics

1 answer:

xxMikexx [17]3 years ago

6 0

7/10 + 1/10 = 8/10 which can be simplified down to 4/5

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In a survey adults and children were asked whether they prefer hamburgers or pizza the survey data are shown in the relative fre

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Answer:

A is the correct answer

Step-by-step explanation:

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3 years ago

scores on a college entrance examination are normally distributed with a mean of 500 and a standard deviation of 100% of people

Softa [21]

We have

$\mu = 500$

$\sigma = 100$

425 corresponds to a z of

$z_1 = \dfrac{425 - 500}{100} = -\dfrac 3 4$

575 corresponds to

$z_2 = \dfrac{575 - 500}{100} = \dfrac 3 4$

So we want the area of the standard Gaussian between -3/4 and 3/4.

We look up z in the standard normal table, the one that starts with 0 at z=0 and increases. That's the integral from 0 to z of the standard Gaussian.

For z=0.75 we get p=0.2734. So the probability, which is the integral from -3/4 to 3/4, is double that, 0.5468.

Answer: 55%

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3 years ago

N is an integer -1 < n < 4 list the possible values of n

Agata [3.3K]

Answer:

0 1 2 3

Step-by-step explanation:

Since n is an integer

We have n = { 0 1 2 3 }

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3 years ago

Find the surface area. Round the nearest hundredth.

Kruka [31]

Answer: 31.42 m

Step-by-step explanation:

$A=2\pi rh+2\pi r^2$

$A=2\pi (1)(4)+2\pi (1)^2$

$A=31.42$

Hope this helped! ;)

8 0

3 years ago

I need help please and thank you

stiks02 [169]

Answer:

640 cm²

Step-by-step explanation:

Given 2 similar figures with ratio of sides = a : b, then

ratio of areas = a² : b²

Here the ratio of sides = 5 : 20 = 1 : 4, thus

ratio of areas = 1² : 4² = 1 : 16

The area of ABCD is 16 times the area of EFGH, so

area = 40 × 16 = 640 cm²

6 0

3 years ago

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