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frutty [35]
3 years ago
9

3X - 2y = 2 5x - 5y = 10

Mathematics
2 answers:
KonstantinChe [14]3 years ago
6 0
Y= 3x over -2 x= 2+9
jasenka [17]3 years ago
6 0

Answer:

x = -2 y = -4

Step-by-step explanation:

3x- 2y = 2 -> 15x - 10y = 10

5x - 5y = 10 -> 15x - 15y = 30

Substract one equation from another:

15x - 15x - 10y + 15y = 10 -30

5y = -20

y = -4

Plug in y into an equation

3x + 8 = 2

3x = - 6

x = - 2

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Use a single digit times a power of 10 to express the number 866,214,000,000
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8.66214 x 10^11

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question may ask to round, so the answer may be simplified to 9 x 10^11

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Which clock shows the same time?
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11.)-If PQRS is a parallelogram, find the values of x and y.
defon

Step-by-step explanation:

For no. 11

13x + 15 = 19x - 9 ( being opposite sides of parallelogram)

19x - 13x = 15 + 9

6x = 24

x = 4

Also,

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For no. 12

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4 0
3 years ago
Given the following data set, calculate the mean, median, mode, and midrange.
cupoosta [38]

Answer:

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3 0
3 years ago
9a-2=-26<br> 2/3x -4=10<br> Can someone help me?
Mazyrski [523]

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

9a−2=−26

Step 1: Add 2 to both sides.

9a−2+2=−26+2

9a=−24

Step 2: Divide both sides by 9.

9a

9

=

−24

9

a=

−8

3

Answer:

a=

−8

3

2

3

x−4=10

Step 1: Add 4 to both sides.

2

3

x−4+4=10+4

2

3

x=14

Step 2: Multiply both sides by 3/2.

(

3

2

)*(

2

3

x)=(

3

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)*(14)

x=21

Answer:

x=21

8 0
4 years ago
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