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anygoal [31]
3 years ago
12

PLEASE HELP IM BEGGING !! ITS DUE AT MIDNIGHT

Mathematics
2 answers:
Scrat [10]3 years ago
7 0
I got 3,050 after 60 days and
mylen [45]3 years ago
3 0

Answer:

  • We are given a and b
  • So: 782.362(1.02165)^x
  • We want to solve for x which is time
  • We want to find how many termites would be there in 60 days
  • I'm assuming x is in days
  • So set the equation equal to 5000
  • Hence x = 86.5 days
  • Now in 60 days there will be = 2828.36 termites
  • Please ask any questions you may have
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The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes
Komok [63]

Answer:

a. The probability of completing the exam in one hour or less is 0.0783

b. The probability that student will complete the exam in more than 60 minutes but less than 75 minutes is 0.3555

c. The number of students will be unable to complete the exam in the allotted time is 8

Step-by-step explanation:

a. According to the given we have the following:

The time for completing the final exam in a particular college is distributed normally with mean (μ) is 77 minutes and standard deviation (σ) is 12 minutes

Hence, For X = 60, the Z- scores is obtained as follows:

Z=  X−μ /σ

Z=60−77 /12

Z=−1.4167

Using the standard normal table, the probability P(Z≤−1.4167) is approximately 0.0783.

P(Z≤−1.4167)=0.0783

Therefore, The probability of completing the exam in one hour or less is 0.0783.

b. In this case For X = 75, the Z- scores is obtained as follows:

Z=  X−μ /σ

Z=75−77 /12

Z=−0.1667

Using the standard normal table, the probability P(Z≤−0.1667) is approximately 0.4338.

Therefore, The probability that student will complete the exam in more than 60 minutes but less than 75 minutes is obtained as follows:

P(60<X<75)=P(Z≤−0.1667)−P(Z≤−1.4167)

=0.4338−0.0783

=0.3555

​

Therefore, The probability that student will complete the exam in more than 60 minutes but less than 75 minutes is 0.3555

c. In order to compute  how many students you expect will be unable to complete the exam in the allotted time we have to first compute the Z−score of the critical value (X=90) as follows:

Z=  X−μ /σ

Z=90−77 /12

Z​=1.0833

UsING the standard normal table, the probability P(Z≤1.0833) is approximately 0.8599.

Therefore P(Z>1.0833)=1−P(Z≤1.0833)

=1−0.8599

=0.1401

​

Therefore, The number of students will be unable to complete the exam in the allotted time is= 60×0.1401=8.406

The number of students will be unable to complete the exam in the allotted time is 8

6 0
3 years ago
(-7)(-5)(2)? Its just like that so...
MAVERICK [17]

Answer:

70

Step-by-step explanation:

-7 × -5 = 35

35 × 2 = 70

8 0
3 years ago
Read 2 more answers
Kate buys 10 tickets to a show she also pays a $5 parking fee she spent $35 to see the show
jeka57 [31]

Answer:

The answer is 40

Step-by-step explanation:

Its 40 because 35 plus 5 is 40

3 0
3 years ago
Read 2 more answers
What is the answer too 6+ 6
Dimas [21]

The answer is 12. Hope this helps!

4 0
3 years ago
Read 2 more answers
1. identify the corresponding sides on the figure below
lianna [129]
6 and 4,
8 and 12,
12 and 18
yes the ratios are equal (the ratio is 2:3 or 2/3)
4 0
3 years ago
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