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White raven [17]
3 years ago
9

which of the following statements about perpendicular lines is true? a. perpendicular lines have a constant distance between the

m. b. perpendicular lines intersect at a 90 degrees angle. c. there is no standard symbol for perpendicular lines. d. perpendicular lines do not exist in the same plane.
Mathematics
1 answer:
Flauer [41]3 years ago
7 0
B is the right answer
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To determine the cost of each item, we need to set up equations. From the problem statement, we have three unknowns so we need three equations. We set up equations as follows:

let x cost of small pizzas
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two small pizzas, a liter of soda, and a salad cost $14
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x + y + 3z = 15

three small pizzas, a liter of soda, and two salads cost $22
3x + y + 2z = 22

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3 years ago
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vaieri [72.5K]
C because if the line Q is 1,5 and 1,8, it would have to be a vertical line, as the X axis doesn’t change. As i know, a vertical line always has a slope of 0, and a horizontal line (which the x-axis is) always has an undefined slope.
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