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labwork [276]
3 years ago
8

A research scientist reports that mice will live an average of 40 months when their diets are sharply restricted and then enrich

ed with vitamins and proteins. assuming that the lifetimes of such mice are normally distributed with a standard deviation of 6.3 months, find the probability that a given mouse will live between 37 and 49 months.
Mathematics
1 answer:
natka813 [3]3 years ago
4 0
Can you make this question clearer to read?
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What is the solution to the system of equations below? y=-1/3 x+6 and y=1/3 x-6​
lilavasa [31]
The answer to the question

8 0
3 years ago
Write a recursive rule and an explicit rule for the<br> sequence<br> 3,7,11,15
m_a_m_a [10]

Answer:

The Recursive formula for the sequence is:

aₙ = aₙ₋₁ + d

The Explicit formula for the sequence is:

a_n=4n-1

Step-by-step explanation:

Given the sequence

3,7,11,15

Here:

a₁ = 3

computing the differences of all the adjacent terms

7 - 3 = 4, 11 - 7 = 4, 15 - 11 = 4

The difference between all the adjacent terms is the same and equal to

d = 4

We know that a recursive formula basically defines each term of a sequence using the previous term(s).

The recursive formula of the Arithmetic sequence always involves the first term.

a₁ = 3

We know that, in the Arithmetic sequence, every next term can be obtained by adding the common difference and the preceding term.

so

The recursive formula of the sequence is:

aₙ = aₙ₋₁ + d

substitute n = 2 to find the 2nd term

a₂ = a₂₋₁ + d

a₂ = a₁+ d

substitute a₁ = 3 and d = 4

a₂ = 3 + 4

a₂ = 7

Thus, the recursive formula for the sequence 3,7,11,15 is:

aₙ = aₙ₋₁ + d

<u>An explicit rule for the sequence</u>

Given the sequence

3,7,11,15

We already know that

a₁ = 3

d = 4

An arithmetic sequence has a constant difference 'd' and is defined by  

a_n=a_1+\left(n-1\right)d

substituting a₁ = 3 and d = 4

a_n=4\left(n-1\right)+3

a_n=4n-4+3

a_n=4n-1

Therefore, an explicit rule for the  sequence

a_n=4n-1

6 0
3 years ago
A rectangle has an area of 24m². its length is 5m longer than the width.
yanalaym [24]

Answer:

2x+2(x+5)) = 24

Step-by-step explanation:

2x+ 2(x+5) = 24

x is represented by the shorter side. Multiply by 2 because of the 2 sides. For the longer side, since it is 5m longer than the shorter side, you have to write (x+5). Multiply by 2 because of the 2 sides. Finally, add them both together since it is the area and set it equal to 24.

4 0
4 years ago
The price of a DVD is $24 plus an 8% sales tax. What is the sales tax on the DVD in dollars and cents?
musickatia [10]

Answer:

אויב איר דאַרפֿן הילף צו אָנהייבן, די מעטהאָדס זענען גרויס פֿאַר ביגינערז, אָבער איר קענען צולייגן צו קיין שטודיום. ווען איר פילן מער באַקוועם צו לערנען דעם וואָרט פון גאָט, איר וועט אָנהייבן צו אַנטוויקלען דיין טעקניקס און אַנטדעקן די בילכער רעסורסן וואָס וועט מאַכן דיין לערנען זייער פּערזענלעך און מינינגפאַל.

Step-by-step explanation:

קענסטו העלפן?

5 0
3 years ago
Read 2 more answers
A country's population in 1993 was 72 million. In 1996 it was 76 million. Estimate the population in 2003 using the exponential
swat32
Hi there
First find the rate of growth
The formula is
P=Ae^kt
P 76 million
A 72 million
E constant
K ?
T 1,996−1,993=3 years
We need to solve for k
K=[log (p/A)÷log (e)]÷t
K=(log(76÷72)÷log(e))÷3
K=0.018

Now find the population in 2003
P=Ae^kt
P ?
A 72 million
K 0.018
T 2,003−1,993=10 years
So
P=72×e^(0.018×10)
P=86 million

Hope it helps

7 0
3 years ago
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