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larisa [96]
3 years ago
9

One meter of electrical cord costs 3 dollars. How much should one pay for 4 meters?? Please help me out here.

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
3 0

Answer:

$12

Step-by-step explanation:

The best way to do this is with a simple ratio. If you pay $3 for one meter, then for 4 meters, you’d pay $12. You BOUGHT 4 times more cord, which means you’d PAY 4 times more. Thus, 3 x 4 = 12!

Or with ratios:

1 meter : $3

multiplying both sides by 4

4 meters : $12

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Find a rectangular equation. X = 3tan t, Y = 2sec t, for in (−π /2 , π /2 )
anzhelika [568]

Answer:

Step-by-step explanation:

x= 3tan(t) \rightarrow tan(t) = \frac{x}{3} \rightarrow tan^2(t) = \frac{x^2}{9}

y= 2sec(t) \rightarrow sec(t) = \frac{y}{2} \rightarrow sec^2(t) = \frac{y^2}{4}

sec^2(t) -tan^2(t) =1

\frac{y^2}{4} -\frac{x^2}{9} =1

is the rectangular equation of the parameter functions.

also, it is a hyperbola. The condition -\pi/2 < t limit x from 0 to infinitive

7 0
4 years ago
What is 5 pounds for $2.49 as a unit rate, rounded to the nearest hundredth?
klasskru [66]

divide 2.49 by 5

2.49/5 = 0.498 rounded to nearest hundredth is 0.50 per pound

6 0
4 years ago
Read 2 more answers
a five question multiple choice quiz has five choices for each answer. use the random number table provided, with 0's representi
Montano1993 [528]

The experimental probability of correctly guessing at random exactly zero correct answers is (4/5)⁵

<h3>What is Probability?</h3>

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

Here, total multiple choice quiz = 5 questions

          Each question contains 5 choices in which 1 choice is correct and remaining 4 are incorrect.

Possibility of first wrong choice = 4/5

Possibility of second wrong choice = 4/5

Possibility of third wrong choice = 4/5

Possibility of fourth wrong choice = 4/5

Possibility of fifth wrong choice = 4/5

Overall probability for Zero correct answer=(4X4X4X4X4)/(5X5X5X5X5)

                                                                        = (4/5)⁵

Thus, the experimental probability of correctly guessing at random exactly zero correct answers is (4/5)⁵

Learn more about Probability from:

brainly.com/question/11234923

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2 years ago
Consider the equation. Which graph shows a line that is perpendicular to the line defined by the given equation? A. In a linear
Nikolay [14]

The graph second represents the line that is perpendicular to the line y = 4x - 2 option  (B) is correct.

<h3>What is the slope?</h3>

The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. Anywhere on the line, the slope stays unchanged (the same).

\rm m =\dfrac{y_2-y_1}{x_2-x_1}

The question is incomplete:

The complete question is:

Consider the equation y = 4x - 2 Which graph shows a line that is perpendicular to the line defined by the given equation?

Please refer to the attached picture.

The given line:

y = 4x - 2

The slope of the line m = 4

The slope of the line which is perpendicular to the above line:

M = -1/4 = -0.25

The graph second has a slope of -0.25

\rm y\ -2\ =\ \dfrac{\left(2-0.5\right)}{-4-2}\left(x+4\right)

y - 2 = -0.25x - 1

y = -0.25x + 1

Thus, the graph second represents the line that is perpendicular to the line y = 4x - 2 option  (B) is correct.

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brainly.com/question/3605446

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6 0
2 years ago
What’s this in standard form
AlladinOne [14]

Answer:

0.614

Step-by-step explanation:

4 0
3 years ago
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