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HACTEHA [7]
3 years ago
10

Explain how to use a protractor to measure an angle

Mathematics
2 answers:
larisa [96]3 years ago
8 0

Answer:

pute the proutractor on the shaip you wanta put it on. then aline the nunbers and lies to the liees of the figgyur thingy to use the protractr.  hoep thiss hehlps! yw      

Step-by-step explanation:

Verdich [7]3 years ago
4 0

Answer:

How to measure an angle with a protractor:

1 Place the midpoint of the protractor on the VERTEX of the angle.

2 Line up one side of the angle with the zero line of the protractor (where you see the number 0).

3 Read the degrees where the other side crosses the number scale.

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A population has a standard deviation of 5.5. What is the standard error of the sampling distribution if the sample size is 81?
VladimirAG [237]

Answer:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})

And the standard error would be:

\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}

And replacing we got:

\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611

Step-by-step explanation:

For this case we know the population deviation given by:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})

And the standard error would be:

\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}

And replacing we got:

\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611

4 0
3 years ago
Please solve each equation & check your solution. Thank You!
Deffense [45]

Answer:

G). 1.2x + 7.92 -3.3x = 41

-2.1x=33.08

x = 33.08/-2.1

x = - 15.752

H). 3x/2 + 9/5 = 12

Multiply through by 10

15x + 18 =120

15x =120-18

15x = 102

x =102/15

x=34/5

I). 5 = 9/4 - r/3

Multiply through by 12

60= 27 - 4r

60 - 27 = -4r

33 = - 4r

r = -33/4

J). 2(x - 2) = 12

2x - 4 = 12

2x = 16

x = 16/2

x = 8

8 0
3 years ago
The circumference of a redwood tree trunk is 16π ft, and it is 100 ft tall. What is the approximate volume of the redwood tree t
GarryVolchara [31]

Answer:

volume of  redwood tree is 6400 π ft^3(option 4)

Step-by-step explanation:

concept =

volume of cylinder = πr^2l

where r is the radius and l is the length of cylinder

circumference of cylinder = 2πr

_____________________________________

shape of  redwood tree can be taken as cylindrical

given

circumference of a redwood tree trunk is 16π ft

2πr = 16π

=> r = 16π/2π = 8

Thus, radius is 8 feet

Therefore volume of  redwood tree = πr^2l = π8^2*100 = π*64*100

volume of  redwood tree =6400 π ft^3

7 0
3 years ago
Will mark as Brainliest.
Alchen [17]
The answer is D you cannot factor the given polynomial
4 0
3 years ago
Read 2 more answers
2×2 write the correct answer below
olga2289 [7]

Answer:

4 :-)))))))) have a wonderful day!

4 0
3 years ago
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