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Korolek [52]
3 years ago
5

When writing twenty-one-and-a-half-trillion in scientific notation, what is the exponent needed on the base ten?

Mathematics
2 answers:
andre [41]3 years ago
7 0

Answer:

The exponent needed on the base ten is:

  • <u>10</u>.
  • 2.15X10^<u>10</u>

Step-by-step explanation:

You should know that the scientific nomenclature that is regularly used to express a trillion is:

  • 1X10^9

<u> But since the base that accompanies base 10 must always be a number less than 10, you cannot use 21.5 (which would be the ideal) but it must be the number with the decimal sign moved once to the left: 2.15</u> (the which is less than 10), since the decimal sign has been moved to the left in the base, you must increase the exponent by 1 for each digit that you ran the decimal sign, <u>as in this case the sign moved only one digit, you must increase by one the exponent, therefore the exponent will no longer be 9 but 10</u>.

  • 2.15X10^<u>10</u>
Nat2105 [25]3 years ago
5 0
1 trillion is 10^9.

Thus, 21 1/2 trillion is    21 1/2 times 10^9, or 2.15 times 10^10

Hope this helps.  If not, ask for clarification.
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Calculați aplicând distributivitatea înmulțirii fata de adunare și de scădere
solmaris [256]

Răspuns:

7/5;

2 întreg 5/12

Explicație pas cu pas:

6/7 × (2 numere întregi și 5 / 6-1 numere întregi și 1/5)

6/7 * (2 5/6 - 1 1/5)

6/7 * (17/6 - 6/5)

6/7 * (85 - 36) / 30

7/7 * 49/30

1/1 * 7/5

= 7/5

2.)

5/8 × 1 întreg și 2/3 + 11/5

5/8 * (1 2/3 + 11/5)

5/8 * (5/3 + 11/5)

5/8 * (25 + 33) / 15

5/8 * 58/15

1/8 * 58/3

= 58/24

= 2 întreg 10/24

= 2 întreg 5/12

4 0
3 years ago
HELP YOUR GIRL OUT PLEASE!!
Blababa [14]

The value of the collection originally was $1,000,000

What was the original value of the collection?

The original value of the collection is not known, hence, it is represented by X

The increase in value by $50,000 means that the value is X+$50,000

Now, when the error was discovered, it is now worth half of the  value previously

The new value is (X+$50,000)*0.5

New value=(X+$50,000)*0.5

The new value at this point is $525,000

$525,000=(X+$50,000)*0.5

$525,000/0.5=X+$50,000

$1,050,000=X+$50,000

X=$1,050,000-$50,000

Find out more about change in value on:brainly.com/question/13097163

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6 0
2 years ago
Triangle ABC is transformed to obtain triangle A′B′C′:
GaryK [48]

Answer:

327

Step-by-step explanation:

7 0
3 years ago
In a group of 42 students, 9 study both Art and Biology.
LUCKY_DIMON [66]
Answer:
The probability the student studies Art and
Biology is 0.2143.
Step-by-step explanation:
Denote the events as follows:
A = a students studies Art
B= a students studies Biology
The information provided is:
N = 42
n (An B) = 9
n (A' n B) = 10
n (A' n B') =7
Then the number of students who study Art
but not Biology is:
n(An B') = N -n (An B) -n (A' nB) - n (A'n B')
= 42 - 10 - 7 - 9
= 16
The number of students who study Art but
not Biology is 16.
Compute the probability the student studies
Art and Biology as follows:
P(ANB)
n(ANB)
= 0.2143
Thus, the probability the student studies Art
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3 0
2 years ago
A company ships packages through the postal service. One week, the cost of shipping one
DanielleElmas [232]

Answer:

Step-by-step explanation:

For this problem, it says that the company not only shipped packages, but also bought a number of stamps. From the equation 6.70+0.50x, it's fairly easy to say that 6.70 is the packages,

What's not so easy is figuring out whether or not 0.50 is the stamps, or x is. However, there's an easy way to figure it out!

From this one, we would have to use "common sense" (not my words, someone elses). Using "common sense", we have to think, can someone buy 0.50 of a stamp?

Technically yes... But would someone buy 0.5 of a stamp? Not really.

So we can safetly assume that x is the "stamp", and 0.50 is <em>the cost of the stamp</em>.

Hope this helps!

7 0
3 years ago
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