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Anarel [89]
3 years ago
7

Jane bought an item for $40 that, after seeing it had a 20% discount. janes friend said the original price was $48. is she right

or wrong?
Mathematics
1 answer:
ale4655 [162]3 years ago
6 0
Jane's friend is wrong, the original price would be $200
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Write an inequality to represent the graph?
padilas [110]

Answer:

\large\boxed{y>\dfrac{5}{2}x-3}

Step-by-step explanation:

<, > - dotted line

≤, ≥ - solid line

<, ≤ - shaded region below the line

>, ≥ - shaded region above the line

We have dotted line (<, >) and shaded region above the line (>, ≥).

Therefore your answer is:

y>\dfrac{2}{5}x-3 or y>\dfrac{5}{2}x-3

Calculate the slope.

The formula of a slope:

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

Put the coordinates of the given points from the graph:

(0, -3) and (2, 2):

m=\dfrac{2-(-3)}{2-0}=\dfrac{5}{2}

5 0
3 years ago
Question #4
zheka24 [161]

Answer:

y = -4/5x + 2 & y = -2/7x - 4/7

Step-by-step explanation:

(4x) - 5y = -10                                             (2x) - 7y = 4

Move 4x on the same side as -10            Move 2x on the same side as 4

-5y = 4x -10                                                -7y = 2x + 4

Divide -5 to both sides                              Divide -7 by both sides

That should isolate the y for both equations.

4x/-5 = -4/5x....-10/-5 = 2                            2x/-7 = -2/7x....4/-7 = -4/7

y = -4/5x + 2                                                y = -2/7x - 4/7

If that wasn't the answer to your question, I'm sorry.

But if it did, then your welcome.

6 0
3 years ago
How many solutions does the system have <br> ​<br> ​<br><br> 4x−2y=8<br><br> 2x+y=2<br> ​
Alex Ar [27]

Answer: one answer.

Step-by-step explanation:

5 0
3 years ago
Sadie has $1 worth of nickels and dimes. She has twice as many nickels as dimes. Write a system of equations that could be used
djverab [1.8K]
Let n= number of nickels and d= number of dimes.
0.05n+0.10d=1.00
d=2n
6 0
3 years ago
Village lanes bowling alley charges $2.00 just to rent a pair of shoes and $3.50 for each game bowled. If you spend a total of $
galben [10]
16=3.5x+2
-2 -2
14=3.5x
/3.5 /3.5
4=x
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8 0
2 years ago
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