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Delicious77 [7]
4 years ago
5

A ruby throated humming bird flaps its wings 159 times in three seconds. How many times does the ruby throated humming bird beat

its wings per second
Mathematics
1 answer:
Naddik [55]4 years ago
7 0

If it flaps its wings 159 times in <em>3 </em>seconds, it'll be able to flap them <em>1/3 </em>of that amount in 1 second, which would be 1/3 · 159 = 53 flaps per second.

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Matthew is cutting construction paper into rectangles for a project. He needs to cut one rectangle that is 12 inches x 14 1/4 in
lukranit [14]

Answer:

I got 278 5/8

Step-by-step explanation:

the question stated square inches which I referred

to as area. You multiply both rectangles than add them together. I may be wrong but I hope this gives you a lead! :)

4 0
3 years ago
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Jonas purchased a new car for $18,000. Each year the value of the car depreciates by 40% of its value the previous year. How muc
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Answer:

$5,040

Step-by-step explanation:

First you multiply 40 times 7. Then turn it to a percent, .280. Finally multiply it by 18,000 and get 5,040.

6 0
3 years ago
B is the midpoint of AC. What is the length of AB? AB is 9x+7 and BC is -3x+20
ahrayia [7]
<h3>Answer:</h3>

AB = \frac{67}{4}\\

<h3>Step-by-step explanation:</h3>

If B is the midpoint of \overline{AC} then AB is just half of AC and also, BC is just half of AC. This means that AB must be equal to BC. Essentially, 9x +7 = -3x +20 and we can solve for the of x from that equation.

9x +7 = -3x +20 \\ 9x +7 +3x = -3x +20 +3x \\ 12x +7 = 20 \\ 12x +7 -7 = 20 -7 \\ 12x = 13 \\ \frac{12x}{12} = \frac{13}{12} \\ x = \frac{13}{12}

Now we can solve for AB

AB = 9(\frac{13}{12}) +7 \\ AB = 3(\frac{13}{4}) +7 \\ AB = \frac{39}{4} +7 \\ AB = \frac{39}{4} +\frac{28}{4} \\ AB = \frac{67}{4}

8 0
3 years ago
Please help! Geometry:
Cerrena [4.2K]

Answer:

x=29

Step-by-step explanation:

the line in the middle of the triangle is at a right angle, so each side of it must equal 90 degrees, so then 90=3x+3, 90-3=3x then you simply, 87=3x which equals x=29.

3 0
3 years ago
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A fruit stand has 200 apples. They order 19 bags with 12 apple each. They sell 42 bags that have 8 apples each. The owner says t
Sunny_sXe [5.5K]
Your best answer is C.

Round up 19 bags they ordered to 20, then multiply by 12 to get 240 apples they ordered.

Round down the 42 to 40. 40 x 8 = 320 apples sold.

200 to start + 240 ordered = 440 apples
440-320 = 120
5 0
3 years ago
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