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Karo-lina-s [1.5K]
2 years ago
10

When a spaceship full of scientists landed on Planet Q, they found that 17/40 of the 160 aliens had 3 eyes. How many aliens had

3 eyes?
Mathematics
2 answers:
Lera25 [3.4K]2 years ago
6 0

Answer:

68 aliens

Step-by-step explanation:

Take the fraction of aliens that had 3 eyes and multiply by the number of aliens

17 / 40 * 160 =

17 * 160/40

17 *4

68

Anit [1.1K]2 years ago
5 0

Answer:

68 out of 160 aliens have 3 eyes

Step-by-step explanation:

If 17 out of 40 aliens have 3 eyes, then \frac{17}{40} = \frac{x}{160}

17 * 160 = 2720

40 * x = 40x

40x = 2720

- - - - - - - - - - - - -

\frac{40}{40} x = \frac{2720}{40}\\\\x = \frac{2720}{40}\\\\x = 68\\

Therefore 68 out of 160 aliens have 3 eyes

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The growth of a city is described by the population functionwhereis the initial population of the city, t is the time in years,
mamaluj [8]

Complete question:

The growth of a city is described by the population function p(t) = P0e^kt where P0 is the initial population of the city, t is the time in years, and k is a constant. If the population of the city atis 19,000 and the population of the city atis 23,000, which is the nearest approximation to the population of the city at

Answer:

27,800

Step-by-step explanation:

We need to obtain the initial population(P0) and constant value (k)

Population function : p(t) = P0e^kt

At t = 0, population = 19,000

19,000 = P0e^(k*0)

19,000 = P0 * e^0

19000 = P0 * 1

19000 = P0

Hence, initial population = 19,000

At t = 3; population = 23,000

23,000 = 19000e^(k*3)

23000 = 19000 * e^3k

e^3k = 23000/ 19000

e^3k = 1.2105263

Take the ln

3k = ln(1.2105263)

k = 0.1910552 / 3

k = 0.0636850

At t = 6

p(t) = P0e^kt

p(6) = 19000 * e^(0.0636850 * 6)

P(6) = 19000 * e^0.3821104

P(6) = 19000 * 1.4653739

P(6) = 27842.104

27,800 ( nearest whole number)

3 0
3 years ago
PLZ HELP ITS DUR RIGHT NOW AND PLZ ANSWER TRUTHFULLY
yuradex [85]

Answer:

x=141

Step-by-step explanation:

(n-2)•180 = Sum of all the interior angles

n = # of sides

(7-2)•180

5•180

900= Sum of all the interior angles

Add all the angles and equal them to 900

125+122+131+x+7+x+107+x-15=900

Add all the numbers up first on the left side

477+3x=900

3x=423

x=141

5 0
2 years ago
PLEASE HELP TEST.
butalik [34]

whether the answer choices

4 0
2 years ago
As an estimation we are told 5 miles is 8 km.<br>Convert 52 km to miles.​
11111nata11111 [884]

Answer:

83.2

Step-by-step explanation:

Given, 5 miles is 8km.  

So, 1 mile will be (8/5) km.  

Now, 52 miles will be (8/5) x 52= 83.2

sorry if I'm wrong plz don't report me :(

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4 0
3 years ago
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HELP WILL GIVE BRANLIEST! WILL RATE! AND SAY THANKS!!!
Drupady [299]

Answer:

9.57 inch

Step-by-step explanation:

(4/3)×pi×8³ = 14×16×h

h = (4/3)×pi×8³ ÷ (14×16)

h = 64pi/21 inch

Or, 9.57 inch (3 sf)

5 0
3 years ago
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