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Softa [21]
3 years ago
13

Help pleasssseeee......(do all pls)

Mathematics
2 answers:
Ugo [173]3 years ago
4 0
16. 5x^3 y^-5 • 4xy^3
20x^4y^-2

20x^4 • 1/y^2

=20x^4/y^2

17. -2b^3c • 4b^2c^2
= -8b^5c^3

18. a^3n^7 / an^4 (a^3 minus a = a^2 same as n^7 minus n^4 = n^3)
=a^2n^3

19. -yz^5 / y^2z^3

= -z^2/y

20. -7x^5y^5z^4 / 21x^7y^5z^2 (divide -7 to 21 and minus xyz)

= -z / 3x^2

21. 9a^7b^5x^5 / 18a^5b^9c^3

=a^2c^2 / 2b^4

22. (n^5)^4

n ^5 x 4
=n^20

23. (z^3)^6
z ^3 x 6
=z^18
beks73 [17]3 years ago
3 0
People really be smart bruhhh
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1. Evaluate -3x^3 -2y^2 when x=-5 and y =3
-Dominant- [34]

Answer:

357

Step-by-step explanation:

A) We replace x = - 5 and u = 3 into -3x^3 -2y^2

and we have -3x^3 -2y^2= -3*(-5)^3 -2*3^2= -3*(-125)- 2*9

or -3x^3 -2y^2 = 375-18= 357

The answer is 357.

B) Replace h = -2 into h^2-3h+2

we have h^2-3h+2 = (-2)^2 -3*(-2) +2 = 4 +6 + 2= 12

The answer is 12

Have a good day.

8 0
3 years ago
What is -3y = 12+3x?<br>m=<br>y=​
lana66690 [7]

Step-by-step explanation:

-3y=12+3x

-y=4+x

y=-4-x and m which is the gradient is the coefficient of x which is -1, therefore m=-1

4 0
2 years ago
Read 2 more answers
I NEED HELP ASAP!!!!
ycow [4]

Answer:

I think it is the fort

h one as well I might be wrong tho I'm only in 6th grade...

Step-by-step explanation:

snn snns zha

7 0
2 years ago
How to write 30000+300+3 in standard form​
Elis [28]

Answer:

30303

Step-by-step explanation:

math bro

7 0
3 years ago
The point below will be reflected over the line y = x and then translated two units left and one unit up.5421-5-4-3-2-10234-1-2-
charle [14.2K]

A reflection over the line y=x implies exchanging the x and y coordinates of a point. For example if you take a generic point (a,b) then its reflection over y=x is (b,a). Our point is (-1,3) so its reflection over y=x is the point (3,-1).

Then we have to translate it two units left. Translating a point left means that we are moving towards negative x values so we need to substract 2 from the x coordinate:

(3,-1)\rightarrow(3-2,-1)=(1,-1)

Finally we have to translate it 1 unit up towards positive y values so we have to add 1 to its y coordinate:

(1,-1)\rightarrow(1,-1+1)=(1,0)

And these are the final coordinates. In the following picture you have the points you get after each step (from A to D) with the y=x line in blue:

4 0
1 year ago
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