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Andrei [34K]
2 years ago
9

20m length of rope costs $12.40. Calucualte the cost of 12m of rope.

Mathematics
1 answer:
atroni [7]2 years ago
6 0

Answer:

$ 7.44

Step-by-step explanation:

20m rope costs $12.40

So, 12m costs = 12.40 x 3/5

= $ 7.44

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Given the line 2x - 3y - 5 = 0, find the slope of a line that is perpendicular to this line.
Tasya [4]

Answer:  

The slope of a line that is perpendicular to the given line is -\frac{3}{2}

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

y=mx+b

Where "m" is the slope of the line and "b" is the y-intercept.

Solve for "y" from the equation of the line 2x - 3y - 5 = 0:

2x - 3y - 5 = 0\\\\-3y=-2x+5\\\\y=\frac{-2}{-3}x+\frac{5}{-3}\\\\y=\frac{2}{3}x-\frac{5}{3}

You can observe that the slope of this line is:

m=\frac{2}{3}

By definition, the slopes of perpendicular lines are negative reciprocal, then, the slope of a line that is perpendicular to the give line, is

m=-\frac{3}{2}

5 0
2 years ago
4. The rental for a television set changed from $80 per year to $8 per month
Olegator [25]

Answer:

16%

Step-by-step explanation:

rental charge per year = $80

rental charge at the rate $8 per year = 8 * 12 = 96

the increased amount = 96 - 80 = 16

% = 16 / 100 = 16%

6 0
3 years ago
true or false? If you wanna took a true “if-then” statement,insertedba not in each clause,and reversed the clauses,the new state
ValentinkaMS [17]
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2 years ago
Terminal point corresponding to theta=-120 degrees
Valentin [98]
That will be   the points corresponding to cos 60 in 3rd quadrant
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3 0
2 years ago
Bacteria can multiply at an alarming rate when each bacteria splits into two new cells, thus doubling. If we start with only one
Elan Coil [88]

Answer:

2^24 = 16,777,216 bacterias.

Step-by-step explanation:

So we start with 1 bacteria

after 1 hours: 2*1 = 2

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after n hours: 2^n  

Since one day has 24 hours we have n = 24 and total number of bacteria will

be:  2^24 = 16,777,216 bacterias.

5 0
3 years ago
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