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kherson [118]
3 years ago
6

Find the area please

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
6 0

Answer:

C.30

Step-by-step explanation:

area of a triangle is 1/2 the base times the height

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Terry rides her bike for 40 minutes and plays basketball for an hour. How many calories does she burn..? (Per Minute).
Ivan

Answer:

12

Step-by-step explanation:

6 0
3 years ago
out of 248 containers of juice bought 100 are orange juice what fraction of juice was purchased is orange juice
MrRa [10]
100/248 = 50/62 = =25/31
7 0
3 years ago
What is the estimated margin of error, using standard deviation?
OLEGan [10]
Find the mean ( average):
105 + 104 + 110 + 112 + 114 + 106 + 108 +109 = 868
Mean = 868 / 8 = 108.5

Standard deviation:
108.5 - 105 = 3.5, 3.5^2 = 12.25
108.5 - 104 = 4, 4^2 = 16
110 - 108.5 = 1.5, 1.5^2 = 2.25
112 - 108.5 = 3.5, 3.5^2 = 12.25
114 - 108.5 = 5.5, 5.5^2 = 30.25
108.5 - 106 = 2.5, 2.5^2 = 6.25
108.5 - 108 = 0.5, 0.5^2 = 0.25
109 - 108.5 = 0.5, 0.5^2 = 0.25

12.25 + 16 +2.25 + 12.25 + 30.25 +6.25+0.25+0.25 = 79.75
79.75/8 = 9.96875, SQRT(9.96875) = 3.1573

Standard Deviation = 3.1573

108.8 +/- 1.96 *(3.1573/sqrt(8) = 110.687 and 106.312

110.687 - 108.5 = 2.19
108.5 - 106.312 = 2.19
 

Margin of error = +/- 2.19



3 0
3 years ago
Find the length of JM
rosijanka [135]

Answer:

16

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
M is directly proportional to r2 <br> When r=2, m=14<br> Work out the value of m when r=12
Genrish500 [490]

we have M is durectly porpotional to r^2

so M=(k)r^2

and when r=2, m=14

so 14=(k)(2)^2

k=14/4 =7/2

so when r=12

m= (7/2)(12)^2 =(7/2)(144) = 504

8 0
3 years ago
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