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3 years ago

-3x+2>-7 or 2(x-2)≥6

Mathematics

1 answer:

miskamm [114]3 years ago

3 0

Step-by-step explanation:

please mark me as brainlest

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In the figure to the right, AB=7 1/2m, BC=2 1/4 m, and DE=1 1/4m. Find the perimeter of the figure if all angles are right.

Reptile [31]

Answer:

22 m

Step-by-step explanation:

This is correct

6 0

3 years ago

Consider a normal population with the mean of 40 and standard deviation of 10. A random sample of was selected: 39.2, 45.7, 27.4

Tems11 [23]

Answer:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X= 38.91$

And we can find the bias with this formula:

$Bias= \bar X -\mu$

And replacing we got:

$Bias = 38.91 -40 = -1.09$

Step-by-step explanation:

For this problem we know that the random variable of interest follows this distribution:

$X \sim N(\mu =40, \sigma= 10)$

And we have the following random sample given:

39.2, 45.7, 27.4, 25.9, 25.1, 46.3, 42.9, 49.0, 40.6, 47.0

And we can calculate the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X= 38.91$

And we can find the bias with this formula:

$Bias= \bar X -\mu$

And replacing we got:

$Bias = 38.91 -40 = -1.09$

5 0

3 years ago

Write a numerical pattern that represents the rule y=x+3 starting with x=0

disa [49]

Just replace x with 0
y=0+3
y=3
and then 1
y=1+3
y=4
and then 2
y=2+3
y=5
and so on
the numerical pattern looks like this:
3 , 4 , 5 , 6 , 7 , 8 , 9.....

5 0

3 years ago

The radius, R , of a sphere is 6.8 m. Calculate the sphere's volume, V . Use the value 3.14 for pi , and round your answer to th

svetlana [45]

Answer:

V = 1316.4 m^3

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3

V = 4/3 (3.14 ) ( 6.8) ^3

= 1316.421973 m^3

Round to the nearest tenth

V = 1316.4 m^3

3 0

3 years ago

The volume of the following solid figure could be found by multiplying the area of its circular base by the height of the cone.

Tems11 [23]

Answer:

its false

Step-by-step explanation:

Brainly is so bad. They are deleting all of these questions like ITS MY HOMEWORK AND I NEED HELP THAT WHAT THE APP IS FOR??????? STOP DELETING QUESTIONS BECAUSE THERE ARE SOME KIDS CRYING BECAUSE THEY JUST CANT UNDERSTAND IT AND THEY NEED AN EXPLANATION BRAINLY IS GETTING WORSE AND WORSE.

3 0

3 years ago

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