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Naya [18.7K]
4 years ago
6

A store advertises a sale as "Get 30% off your highest priced item when you buy 2 or more items." Lee buys items with prices of

$30 and $20. Find the percent of discount on the total purchase
Mathematics
1 answer:
agasfer [191]4 years ago
5 0

Answer:

60

Step-by-step explanation:

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PLZ ANSWER QUICKLY :)
svetlana [45]

The answer is p v q and some other one, I haven't done logic in 2 years already, so I don't know the other one. BUT, if p is true, then p v q HAS to be true because if one of the statements, p or q, is true, then p v q is true. For or statements to be true, at least one of the statements included has to be true.

6 0
3 years ago
Mr. Johnson is working on constructing a square table for his classroom. He positioned his design on a coordinate grid, as shown
sasho [114]

Answer:

This is proved with the help of slope.

Step-by-step explanation:

Given Mr. Johnson is working on constructing a square table for his classroom. He positioned his design on a coordinate grid, as shown. Mr. Johnson will need to put a brace through each diagonal of the table in order to secure the table's stability.

Now, if Johnson use more than one brace then we have to prove that the braces will intersect at a right angle.

From the figure we have to prove the diagonals AC and BD are at right angle. To prove above we have to find the slopes of both diagonals.

\text{Slope of AC=}\frac{y_2-y_1}{x_2-x_1}=\frac{-5-2}{4-(-3)}=\frac{-7}{7}=-1

\text{Slope of BD=}\frac{y_2-y_1}{x_2-x_1}=\frac{2-(-5)}{4-(-3)}=\frac{7}{7}=1

\text{Product of their slopes=}-1\times 1=-1

As we know, In a coordinate plane, the slopes of perpendicular lines are opposite reciprocals of each other i.e their product is equals to -1.

⇒ AC and BD are perpendicular

⇒ Braces which put through each diagonal intersect at right angle and the table will stable.

8 0
3 years ago
Solve for c:<br><br><br><br> c + (-20) = -12
alexira [117]

Answer:

8

Step-by-step explanation:

Isolate and solve for C

c + (-20) = -12\\c - 20 = -12\\c = -12+20\\c = 8

6 0
3 years ago
Read 2 more answers
Help please, read question fully. <br><br> geometry
aleksley [76]

Answer:

  30 inches

Step-by-step explanation:

Assuming the lengths are measured when B lies between A and C on a line, the segment addition theorem applies:

  AC = AB +BC

  42 = AB + 12 . . . . . fill in the given numbers

  30 = AB . . . . . . . . . subtract 12

The length of AB is 30 inches.

3 0
3 years ago
Write an equation of the line with the given characteristics (show all work)
Sedbober [7]

Answer:

1. y = - 4 x + 5

2.  x = -8

Step-by-step explanation:

1.  (-1,9) (1,1)

y = mx + b

m = (y-y') / (x-x') = (1-9) / (1-(-1)) = -8 / 2 = - 4

b = y - mx = 9 - (-4) x (-1) = 5

equation: y = - 4 x + 5

check: (1,1)   y=1 = (-4) x 1 + 5 = 1

2. Vertical line through (-8,6) is a line perpendicular to x axis

    x = -8

4 0
3 years ago
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