3 years ago

Ian saved $3.00 by buying a book at a 20% discount. what was the original price of the book?

Mathematics

1 answer:

Mnenie [13.5K]3 years ago

7 0

Answer:

$15 was the original price of the book.

Step-by-step explanation:

Ian saved Price at 20% discount = $3

Price of 01% = 3/20 = $0.15

Total Price = 0.15 x 100 = $15

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jeff got a 23/25 on his first math test, a 93% on hi second test, and a 0.89 on his third test. Witch of the following orders hi

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Answer:

0.89 23/25 93%

Step-by-step explanation:

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3 years ago

What is the Pythagorean theorem of 9in and 12in triangle

vagabundo [1.1K]

15. The formula is a^2+b^2=c^2. So you just plug in the 9 and 12 in the a and b. You get 225. You then take the square root of that and get 15.

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3 years ago

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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.

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3 years ago

Angles in a parallel line

Hatshy [7]

1.53
2.115
3.122
4.106
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4 years ago

SOMEONE PLS HELP :(!!!!!!

diamong [38]

It would be C as the answers

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3 years ago