3 years ago

Simplify: (4x2 + 21xy – 7y2) + (10x2 + 11y2 – 20). HELP PLEASEEE

1 answer:

5 0

Ok so the answer is 8 + 21xy + 8y

Explanation:
U multiply and calculate then remove the opposites rewrite and calculate then remove the parentheses then u proceed to collect like terms

Hope this helps !!

Happy Christmas <33

You might be interested in

Replacing only the minimum value in a data to a smaller number will change the median

irakobra [83]

This is false my dude.

5 0

2 years ago

Read 2 more answers

PLEASE HELP ME!!! I ONLY HAVE 2 HOURS!!!

ruslelena [56]

Is this for real? Lol anyways I’m guessing B

6 0

3 years ago

Read 2 more answers

Directions: Write your own recipe for trail mix with a catchy name that will make people want to eat it. You can also create a s

kumpel [21]

Answer:

add all of the # and that is your thing

Step-by-step explanation:

6 0

2 years ago

Calculate the value for each determinant:

Sergeeva-Olga [200]

Answer:

Step-by-step explanation:

$\begin{vmatrix}3 & -1\\ -3 & 4\end{vmatrix}=(3\times 4)-(-1)\times (-3)$

= 12 - 3

= 9

$\begin{vmatrix}8 & -1\\ -4 & -1\end{vmatrix}=8\times(-1)-(-1)\times(-4)$

= -8 - 4

= -12

$\begin{vmatrix}-12 & -1\\ 12 & 5\end{vmatrix}=(-12)\times(5)-(-1)\times(12)$

= -60 + 12

= -48

$\begin{vmatrix}2 & -1\\ 2 & -1\end{vmatrix}=2\times(-1)-(2)\times(-1)$

= -2 + 2

= 0

$\begin{vmatrix}0 & -1\\ 17 & 4\end{vmatrix}=0\times(4)-(-1)\times(17)$

= 17

$\begin{vmatrix}1 & 0\\ 0 & 1\end{vmatrix}=1\times(1)-(0)\times(0)$

= 1

6 0

2 years ago

Read 2 more answers

PLEASE HELP!! show work

kotegsom [21]

Answer:

k = -10/9

Step-by-step explanation:

Take the antilog:

36(3k +7) = 132

3k +7 = 3 2/3 . . . . divide by 36

3k = -3 1/3 . . . . . . subtract 7

k = -1 1/9 . . . . . . . divide by 3

3 0

2 years ago