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mylen [45]
3 years ago
5

an average person has 6x10 2power times as many red blood cells as white blood cells. A small sample of blood has 7x10 3power wh

ite blood cells. about how many red blood cells are in the sample
Mathematics
1 answer:
dexar [7]3 years ago
7 0

Answer:

4.2×10to the 6th or 4,200,000

Step-by-step explanation:

First you have to know that you are multiplying these two numbers. When you multiply exponents like there you add the matissa's (6&7) and add the exponents.

6×10to the 2 * 7×10to the 3rd

42 × 10to the 2+3

42×10to the 5th

Something else you need to know is your matissa cant be higher than 10

So:

4.2 × 10to the 6th is your answer

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What is 80% of 400 please help me
Aleonysh [2.5K]

80% means 0.80 .
"of" in math almost always means "times".

"80% of 400" means (0.80 x 400).  That's  320 .

3 0
3 years ago
F a piece of ribbon is 4 and 3 over 4. feet long, how long is it in inches?
Lilit [14]
It is 57 inches long
8 0
3 years ago
Edward deposited $7,000 into a savings account 4 years ago. The simple interest rate is 5%. How much
Oliga [24]

answer: $1,440

explanation: here’s the equation with the values in this case

>> interest = 7,000 x 0.05 x 4

after multiplying, you get 1,440, which is the simple interest

**tip: turn the rate/percent into a decimal, then multiply

8 0
3 years ago
If a=-2 and b=-3 and c=2 and x=2.1 and y =3 and z=-4.2 what is the this answer? 4a-| 3b - 8c | -3
MakcuM [25]

Answer:

-36

Step-by-step explanation:

plug in the letters for the numbers, then you get, -8 - 25 - 3.  -8 - 25 is -33, then you subtract that to 3. so it should look like, -33 - 3.  then simplified even more is -36.

5 0
3 years ago
Three vehicles recorded the following information about their trips.
kondor19780726 [428]

Answer:96km in 1 hour requires a speed of 96km/h; 96km in 2 hours requires a speed of 96/2=48km/h.

You can travel at any speed between 48km/h and 96km/h to arrive in between 1 and 2 hours.

There is no sufficient info to solve the problem and answer the question.

Also,  this fragment   "Two bikers started at the same,"   is a nonsense,  not allowable in  Math.

Find the antiderivative of the velocity function.

1 rotation = 2pi radians = 2*3.14 radians = 6.28 radians

1 rotation per 8 seconds is the angular velocity  2pi%2F8 radians per second = 6.28%2F8 = 0.785 radians per second

hope this is helpful

8 0
3 years ago
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