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geniusboy [140]
3 years ago
14

Anyone who knows how to do this right please

Mathematics
1 answer:
Elan Coil [88]3 years ago
5 0

Answer:

13. 9.77 inches (rounded to 3 s.f.)

14. 249m² (rounded to 3 s.f.)

Step-by-step explanation:

13. To find the arc length, the formula is the angle of the arc out of 360° multiplied by the circumference of the full circle. Circumference of circle: pi × r × 2

\frac{80}{360} × pi × 7 × 2 = 3\frac{1}{9}pi

                       = 9.77 inches (rounded to 3 s.f.)

14. To find the sector area, the formula is the angle of the sector out of 360° multiplied by the area of the full circle. Area of circle: pi × r × r

\frac{285}{360} × pi × 10 × 10 = 79\frac{1}{6}pi

                          = 249m² (rounded to 3 s.f.)

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Angelina_Jolie [31]

Answer:

E. The parameter is μmale - μfemale and the statistic is xmale - xfemale.

Step-by-step explanation:

The sample statistic is a piece of information about the individuals or objects that were selected from a given population. The sample is just a fraction of the total population. Since it is a herculean task studying an entire population, the sample forms a manageable size that allows us to have an insight into the entire population. The sample statistics are now the piece of information about the sample being studied such as the average, mean, median, or mode.  The sample statistics have to be as specific as possible of the factors being measured. In the question, we would have to obtain the mean of both the male and female genders. This gives us an insight into the population under study.

The parameter, on the other hand, is a description of the entire population being studied. For example, we might want to determine the population mean. That is the factor we seek to measure. It is represented by the sign mu (μ).  

8 0
3 years ago
Please help I will mark BRAINLIEST ​
konstantin123 [22]

Answer:

Your answer is t>28

Have a nice day!

mark as brainliest

5 0
2 years ago
Read 2 more answers
The ground temperature at an airport is 16 °C. The temperature decreases by 6 °C for every increase of 1 kilometer above the gro
Kitty [74]

Answer:

i think its -14

Step-by-step explanation:

it says the temperature decreases by 6 for every 1 kilometer

if you subtract 30 from 16 (because 6 time 5 is 30)

you get -14

im not 100% sure tho

4 0
3 years ago
5.6=0.02z+7.38, solve for z and explain
Anna71 [15]
Yes I got -89
Hope it helps
7 0
3 years ago
Hello ppl! Hope your having an awesome day! I just need to ask, is 8 tons greater than, equal to, or less than 16,000 pounds
maxonik [38]
There are 2,000 pounds in each ton, so to convert it to pounds, 8 ton * 2 = 16,000 pounds. Meaning that they are EQUAL. 
5 0
3 years ago
Read 2 more answers
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