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gayaneshka [121]
4 years ago
13

a sum of money at compound interest amounts to thrice itself in 3 years. in how many years will it be 9 times itself?

Mathematics
1 answer:
Scilla [17]4 years ago
8 0
A sum of money at compound interest amounts to thrice itself in 3 years. in how many years will it be 9 times itself?

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What is the first step when adding 1.45 x 108 and 3.9 x 107?
garik1379 [7]

We need to add 1.45 x 10^8 and 3.9 x 10^7.

Please see..

We have given numbers in scientific form.

<em>We can't add the decimal numbers in front, because those numbers are being multiplied with 10 exponents and the exponents of 10's are not same.</em>

<em>So, we always convert the exponents of 10 as same.</em>

<em>1.45 x 10^8 could be converted to 14.5 x 10^7 to get exponent of 10 as 7 as other number 3.9 x 10^7 also has exponent of 10 as 7.</em>

<em>After this step we can just add the 14.5  and 3.9 and put × 10^7 with it.</em>

So, first correct step is:

<h3> 2. Convert 1.45 x 108 to 14.5 x 107.</h3>
8 0
3 years ago
Suppose that each semester at a particular community college Manuel has to pay $1478 in tuition and $121 in fees.
Kamila [148]

Answer:

Step-by-step explanation:

<em>Let x be time, in semesters, remaining before Manuel graduates</em>.  We find that Manuel's expenses are:

$1478/semester in tuition, and

$121/semester in fees

1.  <u>x semesters remaining:  fees</u>

  Remaining cost for fees, y, is the product of the fee times the number of semesters, x:

y =($121/semester)*x

y = ($121)*x

2.  <u>x semesters remaining:  tuition</u>

  Remaining cost, y, is the product of the tuition (times the number of semesters, x.  

y = ($1478/semester)*x + ($121/semester)*x

y = ($1599)*x

3.  <u>x semesters remaining:  tuition and fees</u>

  Remaining cost, y, is the sum of the products of the tuition (times the number of semesters, and the fees (tix.  

y = ($1478/semester)*x + ($121/semester)*x

y = ($1599)*x

5 0
1 year ago
Can someone help me please?
Julli [10]
C twenty letters fourteen more letters need more letters
5 0
3 years ago
2×-1=7 <br> solve<br><br> what is it ??????
QveST [7]

Answer:

x = 4

Step-by-step explanation:

2x - 1 = 7

2x = 7 + 1

2x = 8

x = 8/2

x = 4

7 0
4 years ago
Can you help me please
ICE Princess25 [194]

good luck

I hope this will help you

7 0
3 years ago
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