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PIT_PIT [208]
1 year ago
14

On average, an American hummingbird flaps its wings about 3,180 times per minute.

Mathematics
1 answer:
Elden [556K]1 year ago
5 0

Answer:

53 times per second

Step-by-step explanation:

There are 60 seconds in 1 minute, so divide the 3180 flaps per minute into 60 equal parts.

3180 / 60 = 53

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A principal of $2600is invested at 6.75% interest, compounded annually. How much will the investment be worth after 14 years
dedylja [7]

Answer:

$6488.19

Step-by-step explanation:

To solve this problem we use the compounded interest formula:

amount  =  principal(1 + (r \n))^({n}{t})

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a = $6488.19

8 0
3 years ago
Line g passes through points (5, 9) and (3, 2). Line h passes through points (9, 10) and (2, 12). Are line g and line h parallel
icang [17]

For this case we find the slopes of each of the lines:

The g line passes through the following points:

(x_ {1}, y_ {1}) :( 3,2)\\(x_ {2}, y_ {2}) :( 5,9)

So, the slope is:

m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {9-2} {5-3} = \frac {7} {2}

Line h passes through the following points:

(x_ {1}, y_ {1}) :( 9,10)\\(x_ {2}, y_ {2}) :( 2,12)

So, the slope is:

m = \frac {y_ {2} -y_ {1}}{x_ {2} -x_ {1}} = \frac {12-10} {2-9} = \frac {2} {- 7} = - \frac {2} {7}

By definition, if two lines are parallel then their slopes are equal. If the lines are perpendicular then the product of their slopes is -1.

It is observed that lines g and h are not parallel. We verify if they are perpendicular:

\frac {7} {2} * - \frac {2} {7} = \frac {-14} {14} = - 1

Thus, the lines are perpendicular.

Answer:

The lines are perpendicular.

8 0
2 years ago
There are four more women than men at a golf club.
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3 years ago
The book Kathy is reading is 540 pages long. So far, she has read 405 pages. What percent of the book does she have left to read
Elan Coil [88]
405/540 = 0.75 —> 75%

The answer is C.
8 0
2 years ago
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Find the value of x in the figure<br><br> A: 205°.<br> B: 65°.<br> C: 115°.<br> D: 155°.
Lemur [1.5K]

The answer is [B]: 65°

Connexus??

6 0
2 years ago
Read 2 more answers
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