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nikitadnepr [17]
3 years ago
5

When a grizzly bear hibernates, its heart rate drops to 10 beats per minute, which is 20%, percent of its normal value. What is

a grizzly bear's normal heart rate when not hibernating?
Mathematics
2 answers:
daser333 [38]3 years ago
7 0

                 10 per minute  is 20% of normal

                       (10 / min)  =  0.2 x (normal)

Divide each side by  0.2 :        Normal  =  (10 / 0.2 min) = 50 / min

notka56 [123]3 years ago
6 0
The grizzly bear's normal heart rate when not hibernating is 50 beats per minute.

I got this by using 10 beats per minute as my dividend and 20% as my divisor.

10 / 20% = 50.

To check: you can multiply 50 by 20% to get its percentage.

50 * 20% = 10

When a word problem uses a number and a percentage and is looking for the whole number, you must divide the number by its corresponding percentage. On the other hand,  when a word problem is looking for the value of the percentage where the total number and percentage is given, just multiply the two
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A floor is made up of 20 triangular tiles, each with sides 40 cm, 24 cm and 32 cm. Find the cost of polishing the floor at the r
pochemuha

Answer:

15360\,\,rupees

Step-by-step explanation:

Let sides of the triangle be a,b,c

a=40\,,\,b=24\,,\,c=32

Semi-perimeter (s) = \frac{a+b+c}{2}

=\frac{40+24+32}{2}\\ =\frac{96}{2}\\=48

Area of one tile =\sqrt{s(s-a)(s-b)(s-c)}

=\sqrt{48(48-40)(48-24)(48-32)}\\ =\sqrt{48(8)(24)(16)}\\ =\sqrt{147456} \\=384\,\,cm^2

So,

Area of 20 tiles =20(384)=7680\,\,cm^2

Cost of polishing the floor at the rate of 2 rupees per sq.cm = 7680(2)=15360\,\,rupees

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3 years ago
Input in standard form the equation of the given line.<br><br> The line with m = -1/2 and b = 1
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Exact Form:

−1/2, b = 1

-12,b=1

Decimal Form:

−0.5,b=1

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3 years ago
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Jason eats 1/4. Of the whole pizza for dinner. Write a fraction that represents the amount of pizza that is remaining.
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Please help me solve this challanging question 9 (step by step sulotion) 50 points!
defon

9514 1404 393

Answer:

  10

Step-by-step explanation:

Let L and T represent the initial amounts that Leo and Theo had. Let n represent the number of bills exchanged in the first exchange. Then we have ...

  L -20n +50n = T -50n +20n . . . . after the first exchange, each has the same

After the second exchange, amounts trade places:

  (L +30n) +6(50) = T

Substituting this into the first equation, we get ...

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Leo gave Theo ten $20 bills.

_____

<em>Comment on the amounts</em>

Theo started with $600 more than Leo, including exactly 16 $50 bills. Leo had at least 10 $20 bills, so he could make the initial exchange. Whatever initial amount Leo had in excess of that $200 was matched in Theo's initial amount, but Theo must have had that excess in $20 bills only. For example, Leo may have started with $300 as 10×$20 +2×$50, but Theo's initial $900 would need to be 5×$20 +16×$50.

8 0
3 years ago
What is the vertex of the quadratic function fix=(x-8)(x-2)
VikaD [51]

Answer:

Vertex: (5, -9)

Step-by-step explanation:

fix = (x-8)(x-2)

fix = x^2 - 2x - 8x + 16

fix = x^2 - 10x + 16

a = 1, b = -10, and c = 16

To find vertex:

x = -b/2a

x = -(-10)/2(1)

x = 10/2

x = 5

y = 5^2 - 10(5) + 16

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y = -9

Vertex: (5, -9)

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