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3 years ago

Why are the solutions to the proportions 40/80 = to x/10 and x/40= 10/8 the same

Mathematics

1 answer:

Daniel [21]3 years ago

5 0

Answer:

In 2 expression the value of x is different

Step-by-step explanation:

It is given that,

40/80 = to x/10 and x/40= 10/8

To find the value of 40/80 = to x/10

40/80 = x/10

x = (40*10)/80

x = 5

To find the value of x/40= 10/8

x/40 = 10/8

x = (40*10)/8

x = 50

From the given results we get the value of x is different.

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Which of the following characteristics of experiments are also characteristics of surveys? Check all that apply.

Licemer1 [7]

Answer: The best answers are :

A Data are gathered during the course of the study

E. Statistical analysis is applied to the results of the study
D. Replication with different groups of subjects can improve the reliability of the study.

Step-by-step explanation:

I hope it helps :)

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3 years ago

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A restaurant has 36 tables. If each can sit five people, how many can be seated at the restaurant?

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3 years ago

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I’m another normally distributed test score is 80 and the standard deviations is 10. How common are values in the less than 60?

lord [1]

Answer:

The probability of obtaining a score less than 60 is 2.28%

It happens 2 out of 100 times.

Step-by-step explanation:

If the mean μ = 80 and the standard deviation σ = 10, then we need to find the probability that an X value is less than 60.

Then we find

$P(X$

To find this probability we use the Z statistic.

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

$P(\frac{X- \mu}{\sigma}$

$P(Z$

This is the same as

$P(Z> 2)$

We look for this value in the table for the normal distribution of right queue and we have:

$P(X 2) = 0.02275$

The probability of obtaining a score less than 60 is 2.28%

It happens 2 out of 100 times.

6 0

3 years ago

PLEASE HELP ASAP!!! :)

jeka57 [31]

The rule of the transformation is
(x,y)->(-y,x)
which corresponds to a 90 counterclockwise rotation about the origin,
which in turn corresponds to a 270 clockwise rotation about the origin.

Note that all rotations preserve lengths and angles, hence the image and preimage are congruent.

6 0

3 years ago

For what value of the variable will b the value of 3−5c be 1 less than the value of 1−c?

Crank

Answer:

c = 3/4

Step-by-step explanation:

Lets set up an equation.

You can get

3-5c + 1 = 1-c to show that it is one less.

now we can solve it.

So by combining like terms, we get:

4-5c = 1-c

that then becomes:

3-5c = -c

--> 3 = 4c

--> c = 3/4

7 0

3 years ago