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Sati [7]
3 years ago
14

Katrina said that the lines y=-2/3x + 5 and y = -3/2x + 2 are perpendicular. Explain Katrina's error.

Mathematics
2 answers:
Elis [28]3 years ago
8 0

There shouldn't be a negative in front of one of the equations.

Vika [28.1K]3 years ago
7 0

Answer:

product of gradients of the two lines = 1 does not imply the lines being perpendicular, the product of gradients have to instead be equal to -1.

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Flat screen tv cost $1,400 the tv is on sale 35% off what is the discounted price on the tv
guajiro [1.7K]
Easy,

finding the complement (net price) subtract the discount percentage by 100% to get the net price percentage. Net price equals the list price minus the discount price.

100%-35%=65%

Multiply the list price ($1,400) by the complement.

Net price= 0.65(1,400)=$910

Thus, the new price is, $910.
7 0
3 years ago
Read 2 more answers
I need help with d and I need to show my work.
cupoosta [38]
Ok
So when you multiply by a fraction just multiply top by top and bottom by bottom
So top by top is 2 by 4 so 8
And bottom by bottom is 3 by 5 which is 15
So answer is 8/15
Hope this helps and don’t forget to mark as brainliest if you thought it was most helpful :)
7 0
3 years ago
Solve for x: 0.008 - 0.02x = 0.03 Then evaluate: x^2 + x + .89 =
s344n2d4d5 [400]
E. none of them         hope I helped
5 0
3 years ago
1. Evaluate: 2 + x - 2(8) for x = 9
Oduvanchick [21]

Answer:

-5

Step-by-step explanation:

2+9-2(8)

11-16

6 0
2 years ago
Read 2 more answers
MATH URGENT
maks197457 [2]

{x}^{2}   + 4x - 12 = 0 \\  {x}^{2}  + 4x + 4 - 4 - 12  = 0\\   {(x + 2)}^{2}  - 16 = 0 \\ x =   -   +  \sqrt{16}  - 2 \\ x =   + \:  or - 4 - 2 \\ x =  - 6 \:  \: x = 2
- subtract the 12 from both sides so that it becomes the last constant term in the quadratic equation which should now equal 0.
- take the 4x
- half the coefficient of 4 (2)
- square it (4)
- add it to the equation (+4)
- subtract it from the equation (-4)
- factorise the square (x+2)^2 expands to (x^2 + 4x + 2) as {a+b}^2={a^2 + ab + ba + b^2}
- now the equation is in turning point form.
- to find x, add 16 and square root 16 and (x+2)
- subtract 2 from positive or negative 4 (as -4^2 and 4^2 both equal 16).
- This should give you two values for x, -6 and 2.


I really hope that this helped :)
7 0
3 years ago
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