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ivann1987 [24]
3 years ago
14

During migration, a hummingbird can fly 210 miles in 7 hours, and a goose can fly 165 miles in 3 hours. Which bird flies at a fa

ster rate
Mathematics
2 answers:
qwelly [4]3 years ago
4 0

Answer:

The goose can fly at a faster rate.

Step-by-step explanation:

To find how many miles per hour each bird is flying you would take the total miles and divide them by the hours it took them to fly.  For the hummingbird you would take 210 miles and divide it by 7, so 210/7 = 30mph.  For the goose you would take 165 miles and divide it by 3, so 165/3 = 55mph.  The humming bird can fly 30 miles in an hour and the goose can fly 55 miles in an hour, therefore the goose flies at a faster rate.

Katen [24]3 years ago
3 0

Answer:

The goose

Step-by-step explanation:

<u>Hummingbird</u>

210 miles in 7 hours

30 mph

<u>Goose</u>

165 miles in 3 hours

55 mph

The goose is faster.

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Two positive integers have a product of 200.
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3 years ago
Please could you answer both... I’ve no clue
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4 0
3 years ago
What is the function g(x) created from f(x) = x^2 by moving the graph left 9 units, vertically stretching it by a factor of 4, a
MariettaO [177]

<u>Given</u>:

The parent function is f(x)=x^2

We need to determine the function g(x) created from the function f(x) by moving the graph left 9 units, vertically stretching it by a factor of 4, and shifting the graph up 5 units.

<u>Shift left 9 units:</u>

The rule to shift the graph c units to the left is given by

y=f(x+c)

where c is the positive real number.

Hence, to shift the graph 9 units to the left is given by

f(x)=(x+9)^2

<u>Vertical stretch by a factor of 4:</u>

The rule to stretch the graph vertically by a factor of c is given by

y=cf(x)

where c>1

Hence, to stretch the graph vertically by a factor of 4, we have;

f(x)=4(x+9)^2

<u>Shifting 5 units up:</u>

The rule to shift the graph c units upward is given by

y=f(x)+c

where c is the positive real number.

Hence, to shift the graph 5 units upward is given by

f(x)=4(x+9)^2+5

Therefore, the function g(x)=4(x+9)^2+5 is created from the graph f(x)=x^2 by moving the graph left 9 units, vertically stretching it by a factor of 4 and shifting up 5 units.

Hence, the graph g(x) is g(x)=4(x+9)^2+5

5 0
3 years ago
Find two values of c in (− π/ 4 , π /4) such that f(c) is equal to the average value of f(x) = 2 cos(2x) on ( − π/ 4 , π/ 4 ). R
pentagon [3]

Answer:

c₁ = 1/2 cos⁻¹ (2/π) = 0.44

c₂ = -1/2 cos⁻¹ (2/π) = -0.44

Step-by-step explanation:

the average value of f(x)=2 cos(2x) on ( − π/ 4 , π/ 4 ) is

av f(x) =∫[2*cos(2x)] dx /(∫dx) between limits of integration − π/ 4 and π/ 4

thus

av f(x) =∫[cos(2x)] dx /(∫dx) = [sin(2 * π/ 4 ) - sin(2 *(- π/ 4 )] /[ π/ 4 -  (-π/ 4)]

= 2*sin (π/2) /(π/2) = 4/π

then the average value of f(x) is 4/π . Thus the values of c such that f(c)= av f(x) are

 4/π = 2 cos(2c)  

2/π = cos(2c)

c = 1/2 cos⁻¹ (2/π) = 0.44

c= 0.44

since the cosine function is symmetrical  with respect to the y axis then also c= -0.44 satisfy the equation

thus

c₁ = 1/2 cos⁻¹ (2/π) = 0.44

c₂ = -1/2 cos⁻¹ (2/π) = -0.44

4 0
3 years ago
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