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SpyIntel [72]
3 years ago
14

i think of a number.it is less than 20.i can make this number by adding two,three or five consecutive numbers. what is my number

?
Mathematics
2 answers:
andriy [413]3 years ago
4 0

Answer:

15

Step-by-step explanation:

7+8 = 15

4+5+6 = 15

1+2+3+4+5 = 15

gavmur [86]3 years ago
3 0

Answer:

Step-by-step explanation:

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In 2016 the United States had a population of about 323 million people and was growing at 0.7 %. Use an explicit exponential mod
ElenaW [278]

Answer:

2047

Step-by-step explanation:

We are given that

Growing rate=0.7%

\frac{dp}{dt}=\frac{0.7}{100}P

\int \frac{dP}{P}=0.007\int dt

lnP=0.007t+C

Using the formula

\int \frac{dx}{x}=ln x+C

P=e^{0.007t+C}=e^{0.007t}\cdot e^C=Ae^{0.007t}

e^C=A

Initially when t=0,P=323 million

Substitute the values

323 million=A

P=323e^{0.007t}

Now, substitute P=400 million

400=323e^{0.007t}

ln\frac{400}{323}=0.007t

ln(1.2384)=0.007t

t=\frac{ln(1.2384}{0.007}

t=30.5\approx 31 Years

Year=2016+31=2047

Hence,In 2047 the U.S population will reach 400 million people.

5 0
3 years ago
The average annual snowfall in king salmon, Alaska is 45.9 inches. The snow season last about 7 months of a year. About how much
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40 POINTS Worth
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Is this a right triangle or not?  If it's a right triangle, you could use the Pythagorean Theorem to find the length of the 3rd side, which would be the hypotenuse.  Thus, 14^2 + 4^2 = c^2, where c is the length of the hypot.

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This does not agree with any of the four possible answers.  Thus, you must look at each of these possible answers and eliminate any that could not be correct.

for example:  if you take 10 inches and add 4 inches, you get 14 inches.  The result would not be a triangle, but rather a straight line.  

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3 years ago
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Sally mows the lawns for $10 per hour. She earns a bonus of $15
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10+15=25
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