How many nanoseconds are in a year?

Answers

Answer 1
Answer:
       (1 year) x (86,400 sec/day) x (365-1/4 day/yr) x (10⁹ nanos./sec)

  =  (1 x 86,400 x 365-1/4 x 10⁹) nanosec

  =    31,557,600 x 10⁹ nanosec

  =      3.15576 x 10¹⁶ nanosec

(This is a rough answer, because the 'year'
is not exactly  365-1/4 days.)


Answer 2
Answer:

1 year = 3.1556926 × 10^16 nanoseconds       

hope this helps!!  


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Who do you do the problem 7/9+1/7+3/5? please explain thoroughly.

Answers

to add fractions you want to make sure that the bottom numbers are the same so we have to make them the same, but we have to make sure that the fractions are unchanged so we get the correct answer

so if we find out what number that 9,7, and 5 can all multiply into. we find that 9 times 7 times 5 or 315 is the number that will work

so to get them to all be over 315, we must multiply each fraction by a form of 1/1 or x/x or (number)/(same numbe as on top)

so 7/9 times (35/35)=245/315
1/7 times (45/45)=45/315
3/5 times (56/56)=168/315

we add them togther
245/315+45/315+168/315=(245+45+168)/315=458/315
this simplifies to 1 and 143/315

To add those fractions, you must find a common denominator for all of them. To find this, find a number that is a multiple of all three denominators.  Then, multiply the top of the fraction by the same number you multiplied to get the common denominator.  Finally you add all of the numerators together and keep the denomiator the same.

Example: 1/2+1/4+1/8

The demominators all are factors of the multiple 8.  Therefore, we will use 8.  Then, since we multiplied 2 by 4 to get eight for the first fraction, we will multiply the top number by 4 also. The new fraction will look like this: 4/8.  After you have done that to all of the fractions, the equation will look like this: 4/8+2/8+1/8.  Finally add all of the top numbers together and keep the denominator the same.  The answer would be 7/8

Hope this helped :)  Good luck


-734.8--1.67 with work? What is the work for this

Answers

Answer:

-733.13

Step-by-step explanation:

Take absolute value of each number

(add absolute value bars to show what you're doing)

-734.8 = 734.8

-1.67 = 1.67

Then do regular subtraction

734.8 - 1.67 = 733.13

Then put back the negative symbol in front and you have your answer

-733.13

Carla made a scale drawing of a classroom. The length of the classroom in the drawing is 5in. The actual length is 40ft. What scale did Carla use for her drawing?

Answers

Answer:

1/96

Step-by-step explanation:

scale is

a model cannot be as same size as that of actual object ,

hence objects are scales down to some value so that its model can be comfortably made.

scale is generally ratio of length  of drawing and actual length of object

scale = length  of drawing / actual length of object.

Given

length of classroom drawing = 5in

actual length of classroom = 40 ft

as unit of drawing and actual classroom is different lets make unit of class smilar to that of drawing that is in inches

we know

1 feet = 12 inches

thus 40 feet = 12*40 inches = 480 inches

thus,

actual length of classroom in inches = 480 inches

scale used by Carla = length  of drawing / actual length of classroom

                                = 5 inches/480 inches = 1/96 (answer)

Craig has a job waiting tables where he earns $3.15 per hour plus tips. Craig earned $79.48 in tips during his shift yesterday.If x represents the number of hours Craig worked yesterday, which of the following equations can be used to find the amount of money Craig earned yesterday?

A.
y = 3.15x + 79.48
B.
y = 79.48x + 3.15
C.
y = 79.48x - 3.15
D.
y = 3.15x - 79.48

Answers

Final answer:

The correct equation to determine the amount of money Craig earned yesterday is 'y = 3.15x + 79.48', where 'y' is the total money earned, '3.15' is the hourly wage, 'x' is the number of hours worked, and '79.48' is the total tips.

Explanation:

The subject of the question is a mathematical problem related to real-world applications of linear equations. In this problem, Craig earns a fixed number of dollars per hour, $3.15, plus a fixed amount of tips, $79.48. These two groups of money create his total earnings for the day. Therefore, the equation to represent this relationship should reflect this fact by multiplying the number of hours he works, represented by 'x', by his hourly wage, and then adding his total tips.

Therefore, the correct equation is: y = 3.15x + 79.48, where 'y' represents the total amount of money Craig earned yesterday. In this equation, '3.15x' represents Craig's earnings from his hourly wage, and '79.48' represents his tips.

Learn more about Linear Equations here:

brainly.com/question/32634451

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Number 18 idk what to do help plz and fast

Answers

it is right it is C 454.5

11y - 5 < 30; 3 check whether the given number is a solution of the equation or inequality.

Answers

We input 3 into y. 11(3)-5<30. 33-5<30? No. 28 is not greater than 30. So it is a solution.