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Ne4ueva [31]
2 years ago
5

Solve the system of equations.

Mathematics
2 answers:
Brums [2.3K]2 years ago
7 0
Solve the system of equations.
12x + 3y = 12
-6x +y = -26


A) (-3,9)
B (-6, -9)
© (-3,8)
D (3, -8)



12x + 3y = 12
2(-6x +y = -26)

12x + 3y = 12
-12x + 2y = -52

—-now x cancels out

5y/5 = -40/5

y = -8

The answer should be D. Let me know if you got it right.



Ainat [17]2 years ago
7 0

Answer:

12X +3y =12.....equation 1

-6x +y = -26....equation 2

putting the value

in equation 2 multiply by 2

12x +3y =12

-12x +2y = -52

____________

5y = -40

y = -40%5

y = -8

putting the value of y in equation 1

12x + 3y = 12

12x + 3× -8 =12

12x -24 =12

12x =12 + 24

12x =36

x =36%12

x=3

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5 0
3 years ago
Write the slope-intercept form of the equation of the line that is parallel to and passes through Point X. Show all work for ful
Lapatulllka [165]

Answer:

y=-1/3x+12

Step-by-step explanation:

To write a parallel first find the slope-intercept form of the first line- y=-1/3x+4

Then rewrite the equation with a y-intercept that will create a second line that passes through X on the graph.

(Although I believe this is right, please correct me if it is not. I, of course, could have made a mistake.)

6 0
4 years ago
Pls help me solve this ​
sammy [17]

Answer:

4 kg of sugar would contain 1.2 \times 10^9 crystals.

Step-by-step explanation:

Given that 3kg of sugar contains 9 × 10⁸ crystals, let "x" represent the number of sugar crystals 4kg of sugar would contain.

Thus, set up a proportion as follows:

3 kg : 9 × 10⁸ = 4 kg : x

\frac{3}{9 \times 10^8} = \frac{4}{x}

Solve for x. Cross multiply.

3 \times x = 9 \times 10^8 \times 4

3x = 36 \times 10^8

3x = 3.6 \times 10^9

Divide both sides by 3

\frac{3x}{3} = \frac{3.6 \times 10^9}{3}

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4 kg of sugar would contain 1.2 \times 10^9 crystals.

5 0
3 years ago
PLEASEEEEEEE HELPPPPPP ASAPPPP
GalinKa [24]

Answer:

C

Step-by-step explanation:

6 0
3 years ago
hey ppl i forgot to add the drop down options on my last question so i made a new one with the options
Kipish [7]

Use the commutative Property of Addition to  add the last two terms first.

9 + (-17) + (-9) = -17

Hope this helps!! Good luck. :)

3 0
3 years ago
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