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topjm [15]
3 years ago
10

What is the sum of 81

Mathematics
2 answers:
Oxana [17]3 years ago
5 0

Answer:

The sum of 81 is 9*9=81

Step-by-step explanation:


Anuta_ua [19.1K]3 years ago
4 0
Hello!

9•8=81

Hope this helps and good luck!
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A county's population in 1991 was 147 million. In 1998 it was 153 million. Estimate the population in 2017 using the exponential
aliina [53]
Let t=number of years since 1991.
Then 
P(t)=147 e^(kt)   ... in millions
P(0)=147 e^(0)=147
P(7)=147 e^(7k)=153
e^(7k)=(153/147)
take ln both sides
ln(e^(7k))=ln(153/147)
7k=0.0400 => k=0.005715

Year 2017=>t=2017-1991=26
P(26)=147e^(26*.005715)=170.55
Answer: in 2017, the projected population is 170.55 millions.
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3 years ago
What is 78.6 in word form
vekshin1
78.6 = Seventy eight and six tenths.
7 0
3 years ago
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Whats the normal arm span for these heights? : 4'10,4'11,5'0,5'4,5'5,5,'7,5'8,5'9,5'10,5'11,6'0
Svetllana [295]

 

In adults, the arm span is approximately 5 cm greater than the height in adult males and 1.2 cm in adult females. To calculate the arm span for the heights given, we add 5cm to their height. The following are the results:

 

Height                   Arm Span Length (in cm)

4’10                        152.32

4’11                        154.86

5’0                          157.4

5’4                          167.56

5’5                          170.10

5’7                          175.18

5’8                          177.72

5’9                          180.26

5’10                        182.80

5’11                        185.34

6’0                          187.88

 

To add, the total measurement of the length from the furthermost part of an individual's arms to the other end when raised equidistant to the ground at shoulder height at a 90º angle is called the arm span or wingspan.

7 0
3 years ago
Please i need help!!!!!!
fomenos

Answer:

  circle

Step-by-step explanation:

A plot of the given points can help you figure this out.

5 0
3 years ago
Solve z^2-2z-35=0 using the zero product property
Sveta_85 [38]
Well z=5 and z=-7 hope this is the correct answer

3 0
3 years ago
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