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Olegator [25]
3 years ago
11

Ashley purchased a prepaid phone card for $25. Long distance calls cost 14 cents a minute using this card. Ashley used her card

only once to make a long distance call. If the remaining on her card is $21.64, how many minutes did her call last
Mathematics
1 answer:
OverLord2011 [107]3 years ago
5 0
If we add $0.14 until we get $21.64, we would add it 154.572 times. To check this answer and make sure I’m right, do this equation: 0.14 x 154.572, then you would get 21.64.

The correct answer is 154.572 minutes.
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Determine whether line AB and line CD are parallel, perpendicular, or neither. A( 4, 2), B(-3, 1), C(6, 0), D(-10, 8)
Lapatulllka [165]

Answer:

<h2>neither</h2>

Step-by-step explanation:

If AB an CD are parallel, then their slopes are the same.

If AB and CD are perpendicular, then the product of their slopes is equal -1.

The formula of a slope:

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

Calculate the both slope:

A(4,\ 2),\ B(-3,\ 1)\\\\m_{AB}=\dfrac{1-2}{-3-4}=\dfrac{-1}{-7}=\dfrac{1}{7}\\\\C(6,\ 0),\ D(-10,\ 8)\\\\m_{CD}=\dfrac{8-0}{-10-6}=\dfrac{8}{-16}=-\dfrac{1}{2}\\\\=============================

m_{AB}\neq m_{CD}

The line AB and line CD are not parallel

m_{AB}\cdot m_{CD}=\left(\dfrac{1}{7}\right)\left(-\dfrac{1}{2}\right)=-\dfrac{1}{14}\neq-1

The line AB and line CD are not perpendicular.

6 0
3 years ago
How do you round to the greatest place value
gregori [183]

<span><span>Example:<span> round 24,356 the greatest place value.
</span></span><span>Home
</span><span>><span> Rounding Numbersto the Greatest Place Value</span><span> < </span><span>you are here
</span></span><span>Example-2:<span> round 8,636 to the greatest place value.

Look to the right of the number in the thousands 
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8,636 is rounded to 9,000 because the highest place 
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6 0
3 years ago
Read 2 more answers
A clothing company buys t-shirts for $10 and sells them for $100. What is the percentage mark up on
Mice21 [21]

Answer:

900%

Step-by-step explanation:

Starting price : 10

End price: 100

100-10 = 90

90/10 = 9 = 900%

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

8 0
3 years ago
If f(x) = -3x - 5 and g(x) = 4x - 2, find (f+ g)(x).
STALIN [3.7K]

Answer:

-40x

Step-by-step explanation:

f(x) =-3x-5

g(x) =4x-2

(f+g)(x) =?

now,

f(g(x))

=f(4x-2)

=-3×4x-2-5

=-10×4x

=-40x

7 0
2 years ago
Use the net to find the lateral area of the cylinder<br>​
Elena L [17]

Answer:

The answer to your question is:  A = 282.6 in²

Step-by-step explanation:

Data

height = 9 in

radius = 5 in

Formula

                A = 2πrh

Process

               A = 2(3.14)(5)(9)

               A = 282.6 in²

4 0
3 years ago
Read 2 more answers
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