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Nat2105 [25]
4 years ago
15

A doctor takes a sample of Laura's blood. There are 4.5 x 10 To the sixth power red blood cells and 5000 white blood cells. How

many times more red blood cells are there than white in the sample? (Answer in standard notation)
Mathematics
1 answer:
VikaD [51]4 years ago
8 0

Answer:

900 times

Step-by-step explanation:

A doctor takes a sample of Laura's blood. There are 4.5 \times 10^{6} red blood cells and 5000 white blood cells.

Now, we are asked to get how many times more red blood cells are there than white blood cells in the sample.

There were 4.5 \times 10^{6} = 4500000 red blood cells in the sample.

Hence, \frac{4500000}{5000} = 900

And there are 900 times more red blood cells than white blood cells in the sample. (Answer)

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In a batch of 500 calculators, 25 were found to be defective. What is the probability that a calculator chosen at random will be
baherus [9]

Answer: 5%

Step-by-step explanation:

Probability for any event = \dfrac{\text{Number of favorable outcomes}}{\text{total outcomes}}

Given: Number of defective calculators = 25

Total calculators = 500

The probability that a calculator chosen at random will be defective= \dfrac{25}{500}

=0.05

=0.05\times100\%\\\\= 5\%

Hence, the required probability = 5%

4 0
3 years ago
A bottle of perfume is spherical with a diameter of 36 mm.
Dafna11 [192]

24.4 mL

By converting mm to cm, we get

1 mm = 1/10 cm

18 mm = 18/10 cm

radius (r) = 1.8 cm

To find the volume,

Volume of sphere = 4/3πr3

= 4/3π(1.8)3

Volume = 24.4 cm3

To find the capacity,

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Capacity = 24.4 mL

7 0
2 years ago
HELP! Need quick - Determine whether the data distribution appears to be positively skewed, negatively skewed, or symmetric.
zalisa [80]

Answer:

A. negatively skewed

Step-by-step explanation:

Plot the values of salary against years

You will notice that;

  • The graph has a long left tail
  • The tail is longer towards the negative direction of the number line

This mean that this graph is a negative skewed graph/left-skewed distribution

In the <u>attached sketch of the plot</u>, join the points with a smooth curve and observe the above mentioned properties.

The x-axis scale ranges from 2000 to 2015 where 0=2000, 1=2001,2=2002......,15=2015

Hope this will give you a visual picture of the negatively- skewed distribution

8 0
3 years ago
Need help answer this please !! ✅
olya-2409 [2.1K]

Answer:

120 degrees so answer b

Step-by-step explanation:

the opposite angles in the shape are equal so <klm = <kjm. this means the answer is the same as the sum of the other sides so 78 + 42 which is 120 degrees

4 0
4 years ago
Please help I'm confused
TiliK225 [7]

Answer:

(24-4.00)-4.50/20

Step-by-step explanation: 24 minus 4 would be 20 and you could buy 4 phone cases because 20 divided by 4.50 is 4.4 so 4 times 4 is 16 plus the 2.00 dollars extra from the .50 in the 4.50 so it would be you can buy 4 phone cases.

3 0
3 years ago
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