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bixtya [17]
3 years ago
9

A submarine descends 540 feet in 18 seconds. How many feet does the submarine travel per second?

Mathematics
2 answers:
Fed [463]3 years ago
5 0

Answer:

540 divided by 18 = 30

30 feet per second

Step-by-step explanation:

topjm [15]3 years ago
5 0

you should divide 540 by 18 and you'll get 30 hope this helps you !!

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spayn [35]

Answer:

47

Step-by-step explanation:

if there are 100 total and 45 are girls, then there are 55 boys enrolled. since 8 are absent- 55-8=47

5 0
3 years ago
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iragen [17]

Answer:

15

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3 0
3 years ago
2*cosx*(2x+30°) + √3=0
MAXImum [283]

Answer: x  ≈  1.59688927,  −1.60312387,  −4.67045686,  4.69039614,  7.872914,  −7.91513776,  −10.89002194

Step-by-step explanation:

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

Simplify 2*cosx*(2x+30°) + √3=0

    Simplify each term.  

       Apply the distributive property.

  • 2  cos ( x )   ( 2 x )  + 2  cos ( x )  * 30 °  + √ 3 = 0
  • Multiply  2  by  2
  • 4  cos ( x )  x  +  2  cos ( x )  *30 ° + √ 3 = 0
  • Multiply  30 °by  2  
  • 4 cos ( x )  x  +  60 cos ( x ) + √ 3 = 0
  • Reorder factors in 4 cos ( x ) x + 60 cos ( x ) + √3
  • 4xcos(x)+60cos(x)+√3=0
  • Graph each side of the equation. The solution is the x-value of the point of intersection. x ≈ 1.59688927 , − 1.60312387 , − 4.67045686 , 4.69039614 , 7.872914 , − 7.91513776 , − 10.89002194

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3 years ago
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3 years ago
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Here are the fuel efficiencies (in mpg) of 10 new cars.
Alenkasestr [34]

Answer:

20%

Step-by-step explanation:

Cars that are less than 19  mpg : 16, 18

2 cars have less than 19 mpg.

2/10  cars have less than 19 mpg.

To change fraction to percentage :

divide the numerator by the denominator, then multiply the decimal by 100

2/10 = 0.2

0.2*100 = 20

20%

6 0
2 years ago
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