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gulaghasi [49]
2 years ago
11

Express 0.000000015 in scientific notation

Mathematics
2 answers:
Rama09 [41]2 years ago
4 0
The scientific notation of 0.000000015 is 123 e 45
babymother [125]2 years ago
3 0
1.5 times 10 to the -8th power 
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Find a rational number halfway in between the two numbers. 7/9 and 3/4<br><br>​
AlekseyPX

Answer: 55/126

Step-by-step explanation:

For this equation, the easiest way to solve is to change the denominators, or bottom halves, of both fractions to be the same thing. The easiest way to do this is to multiply themselves with a “funny form” of one. A funny form of one is just a way of representing “1” with numbers that aren’t 1. “2/2” is a funny form of one. log(x)/log(x) is a funny form of one, etc..

(3/7)x(9/9)=27/63

(4/9)x(7/7)=28/63

These fractions are very close. If you are willing to settle for an unsimplified fraction, the answer here would be 27.5/63. If you aren’t willing to settle for the unsimplified form, we can multiply both fractions by a funny form of one again, most easily 2/2, and find the median of the two fractions.

(27/63)x(2/2)=54/126

(28/63)x(2/2)=56/126

The median of these two fractions is 55/126.

55/126 is exactly halfway between 3/7 and 4/9.

7 0
3 years ago
Find the roots of the equation below 7x^2+3=8x
elixir [45]

Hello from MrBillDoesMath!

Answer:    (1/7) *  ( 4 +\- sqrt(5) i)

where i = sqrt(-1)

Discussion:

The solutions of the quadratic equation ax^2 + bx + c =  0 are given by

x = ( -b +\- sqrt(b^2 - 4ac) )/2a.

The equation 7 x^2 + 3 = 8x can be rewritten as

7x^2 - 8x + 3 = 0.

Using a = 7, b = -8 and c = 3 in the quadratic formula gives:

x =  (8 +\- sqrt ( (-8)^2 - 4*7*3) ) / (2*7)

=      ( 8  +\- sqrt( 64 -  84)) /(2*7)

=      ( 8 +\- sqrt( -20) ) / (2*7)

=      ( 8 +\- sqrt( -20) ) / 14

=       8/14 +\- sqrt(5 *4 * -1) /14

=      4/7   +\- 2 sqrt(5) *i /14

As 2/14 = 1/7 in the second term

=      4/7   +\- sqrt(5) *i /7

Factor 1/7 from each term.

=  (1/7) *  ( 4 +\- sqrt(5) i)


Thank you,

MrB


8 0
3 years ago
8. A company has 350 workers. The
Rzqust [24]

The percent increase in employment would be necessary for the number of workers to be greater than 375 is 25%

<h3>How to determine the rates?</h3>

The given parameters are:

Initial = 350

Final = 375

The rate is calculated as:

Rate = Final/Initial - 1

So, we have:

Rate = 375/300 - 1

Evaluate

Rate = 1.25 - 1

This gives

Rate = 0.25

Express as percentage

Rate = 25%

Hence, the percent increase in employment would be necessary for the number of workers to be greater than 375 is 25%

Read more about division at:

brainly.com/question/25289437

#SPJ1

3 0
1 year ago
Percent proportions: Chloe bought $34 worth of gifts for her friends. She needs to add 24% in tax.
Olegator [25]

Answer:

its $8.16 tax i belive.

7 0
2 years ago
Read 2 more answers
Ayden wrote 54.077 as the standard form for​ fifty-four and​ seventy-seven hundredths. Is he​ correct? Explain.
cestrela7 [59]

Answer:

No, Ayden is incorrect

Step-by-step explanation:

Because the last 7 is in the thousandth place so therefore he is wrong, but this would be <u>the correct answer </u><u>54.77</u> since the last 7 is in the hundredth place.

7 0
1 year ago
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