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Fed [463]
3 years ago
10

Please help and explain

Mathematics
2 answers:
RUDIKE [14]3 years ago
7 0
48 fish.
The first 15 fish plus the new 45 fish minus the 12 that already have tags on them.
15 + 45 = 60
60 - 12 = 48
There should be 48 fish in the pond.
Mama L [17]3 years ago
4 0

Answer:

50 .

Step-by-step explanation:

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Complete parts (a) and (b) using the probability distribution below.
katen-ka-za [31]
Μ = (0×0.026) + (1×0.072) +(2×0.152) + (3×0.303) + (4×0.215) + (5×0.164) + (6×0.066) 
μ = 0 + 0.072 + 0.304 + 0.909 + 0.86 + 0.82 + 0.396
μ = 3.361 ≈ 3.4

We need the value of ∑X² to work out the variance
∑X² = (0²×0.026) + (1²×0.072) + (2²×0.152) + (3²×0.303) + (4²×0.215) + (5²×0.164) + (6²×0.066)
∑X² = 0+0.072+0.608+2.727+3.44+4.1+2.376
∑X² = 13.323

Variance = ∑X² - μ²
Variance  = 13.323 - (3.4)² = 1.763 ≈ 2

Standard Deviation = √Variance = √1.8 = 1.3416... ≈ 1.4

The correct answer related to the value of mean and standard deviation is the option D
<span>
An employee works an average of 3.4 overtime hours per week with a standard deviation of approximately 1.4 hours.</span>
7 0
3 years ago
Two trains leave a town at the same time heading in opposite directions. One train is traveling 12 mph faster than the other. Af
Flauer [41]

Answer:

Two trains leave a town at the same time heading in opposite directions. One train is traveling 12 mph faster than the other. After two hours, they are 232 miles apart. What is the average speed of each train?

52 mph; 64 mph

55 mph; 70 mph

92 mph; 104 mph

98 mph; 110 mph

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Max builds rail fences.for one style of fence,each section uses 3 vertical fence post and 6 horizontal rails.how many rails does
Goryan [66]
He will need 66 :) the answer is 66
6 0
3 years ago
At Silver Gym, membership is $30 per month, and personal training sessions are $35 each. At Fit Factor, membership is $70 per mo
VladimirAG [237]
I’m not sure but i really really really like points!!!!
4 0
3 years ago
Nut C fits on Bolt C. Nut B fits on Bolt B. Nut A fits on Bolt A. Bolt C is larger than Bolt B. Bolt A and Bolt B are exactly th
Alborosie

Answer:

Bolt A will fit Nut A and Nut B

Step-by-step explanation:

We have the following statements:

Nut C fits on Bolt C.

Nut B fits on Bolt B.

Nut A fits on Bolt A.

Bolt C is larger than Bolt B.

Bolt A and Bolt B are exactly the same.

Then we can say that Bolt A will fit Nut A and Nut B...

4 0
3 years ago
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