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2 years ago

Which is equal to cos47°?

Mathematics

1 answer:

Murrr4er [49]2 years ago

7 0

Which of these is equal to cos 47°?

a. cos 43°

b. sin 43°

c. tan 43°

d. cos 133°

B.....

cos (47°)= sin (90°-47°)=sin (43°) [complementary angles]

Answer B

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Answer:

The expression that can be used to determine how fast an elephant runs in miles per hour is 100 miles per hour

Solution:

Given that,

Distance covered by an elephant in 36 seconds is equal to 1 mile

Therefore, distance covered by the elephant in 1 second is $\frac{1}{36}$ mile

Therefore, distance covered by the elephant in 60 seconds (60 seconds = 1 minute) is

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Therefore, distance covered by the elephant in 60 minute (60 minute = 1 hour) is

$\frac{5}{3} \times 60=100 \text { miles per hour }$

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1 year ago

How many positive integer factors of 100! are multiples of 2 or 3?

elena-s [515]

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3 years ago

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laiz [17]

Let the sandwich be represented by = x

Let the drink be represented by = y

As given, Joe charges $10.00 for two sandwiches and one drink, so equation becomes 2x+y=10 ....(i)

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Subtracting (ii) from (i) we get

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cost = 8000+300x

revenue = 700x

To break even, the cost must be equal to the revenue.

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so x=20

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Putting the value of x in (1)

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