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natita [175]
3 years ago
12

The original price of the shirt is $50 but you paid $30 for it on sale what was the percentage change in price

Mathematics
1 answer:
marissa [1.9K]3 years ago
4 0

Answer:

20%

Step-by-step explanation:

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This is urgent please help
Shtirlitz [24]

Answer:

C is the answer i

Step-by-step explanation:

4 0
3 years ago
The verticles of a triangle are the points R(3,c),Q(9,2) and R(3c,11) where c is constant. Given that angle PQR is 90​
IceJOKER [234]

Answer:

Step-by-step explanation:

Find c if ∠PQR = 90°?

I will ASSUME you mean point P is at (3. c)

slope of PQ is (2 - c) / (9 - 3) = (2 - c) / 6

slope of QR is (11 - 2) / (3c - 9) = 9 / (3c - 9)

perpendicular lines have negative reciprocal slopes.

(2 - c) / 6 = -1(3c - 9)/9

9(2 - c) = -6(3c - 9)

18 - 9c = -18c + 54

       9c = 36

         c = 4

5 0
2 years ago
Solve each system by elimination.<br> 1) 10x + 7y=9 -4x - 7y=9
stellarik [79]

Answer:

(3, -3)

Step-by-step explanation:

When asked to solve by elimination, you put them on top of one another, like you're going to add it.

10x + 7y = 9

-4x - 7y = 9

See that 7y? You can cancel those out because one is negative, and one is positive. So those are gone. You finish adding the rest of the numbers as usual and solve for x.

6x = 18

x = 3

Take x, and plug it into either equation to find y.

10(3) + 7y = 9

7y = -21

y = -3

(3, -3)

Hope this helped!

8 0
2 years ago
What is 478 divided by 16
sergij07 [2.7K]
The answer to your question is 29.875
3 0
3 years ago
Read 2 more answers
What is the slope of the line that passes through the given points (3 2) and (5 12)
forsale [732]
Slope is calculated using:
slope = (change in y) / (change in x)
slope = (12 - 2) / (5 - 3)
slope = 10/2 = 5
6 0
3 years ago
Read 2 more answers
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