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andrew-mc [135]
2 years ago
7

Which number is not in scientific notation? (5 points)

Mathematics
1 answer:
Nastasia [14]2 years ago
3 0

9514 1404 393

Answer:

  (a) 11·10^21

Step-by-step explanation:

"Scientific notation" has a mantissa that has one digit to the left of the decimal point. The number 11·10^21 has two digits to the left of the decimal point, so is not in the form required by scientific notation.

  11·10^21 is not in scientific notation

_____

It would be correctly written in scientific notation as as 1.1·10^22.

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WILL<br><br><br> GIVE <br><br> BRAINLIST <br><br> ANSWERS
enot [183]

Answer:

-10

-I-8I = -8

-(-2) = 4

I-11I  = 11

5² = 25

Answer: -10, -8, 4, 11, 25

6 0
3 years ago
A motorboat takes 5 hours to travel 200 miles going upstream. The return trip takes 4 hours going downstream. What is the rate o
dsp73

Answer:

rate of motorboat: b

rate of current: c

So the rate the boat travels upstream is $b - c$, and the rate it travels downstream is $b + c$

Step-by-step explanation:

d = rt

200 = (b - c)\cdot 5

200 = (b + c)\cdot 4

b - c = 40

b + c = 50

Adding these equations, we get:

2b = 90

b = 45

So

c = 50 - 45 = 5

<u>Therefore the rate of the boat is 45kph, and the rate of the current is 5kph</u>

Hope this helps :)

4 0
3 years ago
Someone plz help! thx
timurjin [86]
Convert each mixed number to an improper fraction

--------------------------------------------
Convert 6&1/2 to an improper fraction

6&1/2 = (6*2+1)/2
6&1/2 = (12+1)/2
6&1/2 = 13/2
--------------------------------------------
Do the same for 9&1/4

9&1/4 = (9*4+1)/4
9&1/4 = (36+1)/4
9&1/4 = 37/4
--------------------------------------------
Now multiply the improper fractions 13/2 and 37/4. Multiply straight across

(13/2)*(37/4) = (13*37)/(2*4)
(13/2)*(37/4) = 481/8
--------------------------------------------
The last step is to use long division to find the mixed number equivalent of 481/8

Or we an say 
60*8 = 480
So 60*8+1 = 480+1
which means 
481/8 = (480+1)/8 = 480/8+1/8 = 60&1/8

Making the final answer to be choice C

Another way to get the answer is to convert 481/8 into a decimal to get 60.125 and then convert that back to a mixed number. You should get 60&1/8
6 0
3 years ago
Point T is on line segment SU. Given ST=13 and TU=5, determine the length SU.
KonstantinChe [14]

Answer:

We are given the lengths of the two segments of the line. Using the addition postulate we can obtain the segment of the entire line.

Did you draw out the diagram. We know that the three points are collinear.

Hope this helps

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The ratio of 25minutes to one hour is<br><br>?<br><br>12:5<br><br>5:12<br><br>1:12​
miss Akunina [59]

given that - 1 hour = 60 min

then, 25 60

then, we cut it from the table of 5 !!

therefore, 5:12

5 0
3 years ago
Read 2 more answers
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