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just olya [345]
2 years ago
7

6th grade math i mark as brainliest​

Mathematics
1 answer:
CaHeK987 [17]2 years ago
5 0
The answer would be C, sorry if I’m wrong
You might be interested in
Please Help! Show all the steps!
likoan [24]

You can start by subtracting different equations from each other.

3x + 2y + 3z = 1

subtract

3x + 2y + z = 7

2z = -6

divide by 2

z = -3

add the following two expressions together:

3x + 2y + z = 7

3x + 2y + 3z =1

6x + 4y + 4z = 8

subtract the following two expressions:

6x + 4y + 4z = 8

5x + 5y + 4z = 3

x - y = 5

^multiply the whole equation above by 3

3x - 3y = 15

subtract the following two expressions:

3x - 3y = 15

3x + 2y = 10

-5y = 5

divide each side by -5

y=-1

take the following expression from earlier:

x - y = 5

substitute y value into above equation

x - - 1 = 5

2 negatives make a positive

x + 1 = 5

subtract 1 from each side

x = 4

Therefore x = 4, y = -1, z = -3

I checked these with all 3 equations and they worked :)

(it's quite complicated, comment if you don't understand anything) :)

7 0
3 years ago
Maths<br><br>what is 0.000965 to :<br>2 d.p<br>1d.p<br>2s.g.f<br>3s.g.f<br> thanks
umka21 [38]
Decimal places mean we just start counting immediately after the decimal point, so:
2dp: 0.00
1dp: 0.0

Significant figures, we start counting starting at the first non zero number
So we start counting at the 9, therefore:
2sf: 0.00097
3sf: 0.000965
4 0
3 years ago
Bag C is four times lighter than Bag A. Bag B is twice as heavy as Bag C. How much heavier is Bag A than Bag B ?​
LiRa [457]

Answer:

Step-by-step explanation:

Current Weight         Weight after adding Marbles

Giulio:    2x                          2x + 10                    

Jim:         x                             x + 5

You didn't post the options so hopefully you can determine the answer based on the info I provided above.

8 0
2 years ago
with the square root of negative 1 in the numerator (the top) and eight in the demominator (on bottom) what is the answer
AleksAgata [21]
-1^2/8 = 1/8 is the answer
6 0
3 years ago
What is the solution for the equation 5/3b^3-2b^2-5=2/b^3-2
PilotLPTM [1.2K]
I looked it up and it said it was c 
7 0
3 years ago
Read 2 more answers
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