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Anit [1.1K]
2 years ago
10

Rotate AXYZ 270° about the origin, (0,0).

Mathematics
1 answer:
Travka [436]2 years ago
6 0

Answer:

The rule for a rotation by 270° about the origin is (x,y)→(y,−x) .

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Which expression is equivalent to (5x^7+7x^8) − (4x^4−2x^8)?
I am Lyosha [343]
Simplify step-by-step
5 {x}^{7}  + 7 {x}^{8}  - (4 {x}^{4}  - 2 {x}^{8} )
ANSWER
9 {x}^{8}  + 5 {x}^{7}  - 4 {x}^{4}
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3 years ago
Find the value of x to the nearest tenth
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3 years ago
Solving by elimination <br> 5x+2y= -3<br> 3x+3y=9<br> please help me solve x and y
-Dominant- [34]
1) -3(5x+2y=-3)⇒ -15x-6y=9
                                             ⇒ -9x=27
     2(3x+3y=9)⇒ 6x+6y=18

2) -9x/-9=27/-9 ⇒ x=-3 

3) 3(-3)+3y=9⇒ -9+9+3y=9+9⇒ 3y/3=18/3⇒ y=6

Answer: (-3,6)

Reasoning:
Step 1) In order to eliminate, first I had to multiple the first equation by -3 and the second by 2 so that when combining the equations y would cancel each other out so that I could solve for x. <em>Note: There are many combinations as to how you could multiple the equations so that either the x or y would cancel out.
</em>
Step 2) Once y is eliminated, solve for x.

Step 3) Now plug x back into one of the original equations and solve for y. <em>Note: Plug x back into one of the original equations, not the equations that were changed by multiplication,</em> 

6 0
3 years ago
What two numbers multiply to -20 then add to -8?
VARVARA [1.3K]

Answer:

-10 and 2

Step-by-step explanation:

1.  Think about what numbers multiply to -20:  -10 and 2, 10 and -2, -20 and 1, 20 and -1, 4 and -5, -4 and 5

2.  Then, think about which of the above adds to -8.  This leaves you with -10 and 2

7 0
3 years ago
Read 2 more answers
Which statements about the graph of the function f(x) = -x - 4x + 2 are true? Select three options.
stich3 [128]

Answer:

The option "The function has a positive y-intercept" is true because f(0) = 2, which is the y-intercept.

Step-by-step explanation:

5 0
3 years ago
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