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m_a_m_a [10]
3 years ago
13

In a race, the mean time for three runners was 12.4 seconds and the mean

Mathematics
1 answer:
Ne4ueva [31]3 years ago
4 0

Answer:

11.8

Step-by-step explanation:

3(12.4) + 6(11.5) =  37.2 + 69 = 106.2

106.2/9 = 11.8

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8thgrade 9^2 plus 3^2
eduard

Answer:

90

Step-by-step explanation:

9^2 = 81 and 3^2 = 9

81 + 9 = 90

5 0
2 years ago
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Please solve thisss​
lidiya [134]

Answer:

1,570

Step-by-step explanation:

10×2=20

20×3=60

30×5=150

40×7=280

50×4=250

60×3=180

70×8=630

Now,

20+60+150+ 280 +250+ 280+ 630=1,570

this is the answer

4 0
2 years ago
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You purchased an antique guitar for 8600. It is expected to appreciate at 2.4% annually. How long will it take the guitar to dou
eimsori [14]
For it to double its price the price has to be +100% more, and every year you get +2.4%, so you do:
100/2.4≈ 42 years or 41.66666667.. years.
5 0
2 years ago
Check my work? I came up with 60 degrees. Let me know!
dalvyx [7]
90 minus 32 is 58! You were off by two degrees:)
3 0
3 years ago
Read 2 more answers
A rectangular parking lot has an area of 2/3 of a square kilometer. The width is 1/2 of a kilometer. What is the length, in kilo
jeka57 [31]
Area = length x width
 replace the known information into the equation:

area = 2/3
width = 1/2

so now the formula looks like:

2/3  = 1/2 x L

to solve for L we divide both sides by 1/2

L = 2/3 / 1/2 which  = 2/3 * 2/1 = 4/3 = 1 and 1/3 km
6 0
3 years ago
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