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Ad libitum [116K]
3 years ago
12

What are some equivalent expressions for..

Mathematics
1 answer:
den301095 [7]3 years ago
8 0
\#1\\7(x-4)=7\times x-7\times4=7x-28\\\\\#2\\x(5-6)+13x-10=x(-1)+13x-10=-x+13x-10=12x-10\\\\\#3\\2.5(8-2x)+5(x+1)=2.5\times8-2.5\times2x+5\times x+5\times1\\=20-5x+5x+5=25\\\\\#4\\3(x+10)-3(2-4x)=3\times x+3\times10-3\times2-3\times(-4x)\\=3x+30-6+12x=15x+24
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Answer:

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3 0
2 years ago
Solve the system of equations.<br><br>- 9x + 4y = 6<br><br>9x + 5y = -33​
liubo4ka [24]

Let us solve this system of equations by using the elimination method. Adding the 2 equations, we get

9x + 5y - 9x + 4y = -33 + 6

9y = -27

y = -3

Substituting this value of y in the first equation, we get

-9x + 4(-3) = 6

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7 0
3 years ago
Which of the following is equivalent to the equation below?
DerKrebs [107]
B is the correct answer R=Q-7s/4
6 0
3 years ago
The Rogers family drove a total of 482 miles, starting on
Trava [24]

you add up 138+225 and you get 363 then you subtract 482-363 this is how you set it up:

   4  8  2

- 3  6  3

------------

you have to borrow because 3 does not go into 2 so you change the 8 into a 7 then you 10 to 2 and you get 12 so this is what it looks like:


     4   7   12

-    3   6   3

-------------------

 so you then subtract 12-3=9 then 7-6=1 then 4-3=1

so this is what it looks like

    4     7    12

--- 3    6     3

--------------------

    1     1     9

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7 0
2 years ago
10 POINTS so easy if you are ish smart WILL MRAK BRAINLEST SUPER EASY ISH NOT FOR ME THOUGH
IrinaK [193]

Answer:

Step-by-step explanation:

A]

Both have the same surface area. The numbers are just rearranged.

B]

Is the correct answer.

The surface area of the first one is 2*8*5 + 2*8*6 + 2*5*6 = 236

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C]

Another rearrangement. Not the answer.

D]

4 0
2 years ago
Read 2 more answers
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