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Serggg [28]
3 years ago
11

I'm not sure if this is right or not could someone also explain why ?

Mathematics
1 answer:
nikitadnepr [17]3 years ago
6 0
The mapping rule for 90 degrees counterclockwise would be (-y,x). So if you had (x,y) it would transfer to (-y,x). Yours is wrong it should be (4,-3). Remember
-(-4) is 4 and -3 stays as -3.

Basically, memorize these mapping rules.

Hope this helped!
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If you are asked to find 621 divided by 59, how do you know the quotient will be greater than 10 before you actually divide. (my
Nitella [24]
For me, I know that this answer would be greater than 10 because for a fact, 621 and 59 aren't just perfect multiples of 10. But I don't know, because all humans don't really think alike. So, your teacher might say this doesn't work. Then in that case, I am very sorry. :0

But in any case, I hope this helps and have a good night! :D
4 0
3 years ago
X^2 + __x + 49 pls i need help<br><br> and i need 4x^2-24x+__
nadezda [96]

Answer:

4x2−24x4x2-24x

Factor 4x4x out of 4x24x2.

4x(x)−24x4x(x)-24x

Factor 4x4x out of −24x-24x.

4x(x)+4x(−6)4x(x)+4x(-6)

Factor 4x4x out of 4x(x)+4x(−6)4x(x)+4x(-6).

4x(x−6)4x(x-6)

4x2−24x4x2-24x

Step-by-step explanation:

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4 0
2 years ago
Best Buy purchases a laptop for $244. They then sell the laptop for $927.20. What is the percent increase in the price?
maria [59]

Answer:

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6 0
2 years ago
If 2x +y=8, x+2y=4, find the value of x-y.<br> Please, help me
kifflom [539]

y = 8 -2x

x + 2 (8 - 2x) = 1

x + 16 - 4x = 1

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-3x = -15

x = 5

If x = 5, then we can substitute in...

5 + 2y = 1

2y = -4

y = -2

Now let us check that by substituting those values in to the equation

2x + y = 8

2 (5) + (-2) = 8

That is correct so we have the right values for x and y/

8 0
3 years ago
Expand, and simplify the following expressions a. (2x+y)(x+y) + (2x-y)(x+y)​
tankabanditka [31]

Step-by-step explanation:

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4x²+4xy

7 0
2 years ago
Read 2 more answers
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