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2 years ago

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Mary purchased a prepald phone card for $30. Long distance calls cost 8 cents a minute using this card. Mary used her card only

once to make a long distance
call. If the remaining credit on her card is $26.16, how many minutes did her call last?

1 answer:

julia-pushkina [17]2 years ago

4 0

Hey can I have brainlyist I only need one more :)

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B) Amount<br>Rs 5760, Interest<br>Rs 1526

Crazy boy [7]

Given :

Amount, A = 5760 Rs.

Interest in the amount, I = 1526 Rs.

To Find :

We need to find the % rate of interest.

Solution :

Let, us assume it is simple interest.

So,

$Interest = \dfrac{price \times rate \times time}{100}\\\\1526 = \dfrac{5760 \times r \times m}{100}\\\\r = \dfrac{152600}{5760m}\\\\r = \dfrac{26.5}{m}$

Hence, this is the required solution.

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3 years ago

true or false the standard error of the sum and the standard error of the average both get smaller as the sample size increases

Murrr4er [49]

Answer:

false

Step-by-step explanation:

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3 years ago

Find the area of the quadrilateral

vodomira [7]

Answer:

The formula for a quadrilateral depends on the shape.

Area of a Parallelogram: Base × Height

Area of a Rectangle: Length × Breadth

Area of a Square: (side)^2

Area of a Kite: (1 ⁄ 2) × Product of Diagonals

Area of a Trapezoid: (base1+base2/2) x Height

I hope this helps :)

8 0

3 years ago

What is 43 in exponential form?

Paul [167]

Answer:

40+3

how do u not know this ?

5 0

3 years ago

Read 2 more answers

For the above graph:

oksian1 [2.3K]

Domain = -4<=x<=5
Range = -4<=y<=4
Yes it is a function because each input maps to exactly one output.

8 0

2 years ago