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zvonat [6]
3 years ago
15

Find the solution to the systems of equations using the elimination method.

Mathematics
2 answers:
vredina [299]3 years ago
5 0
X=-2/3y+11/3

x=-3/5y+14/5
Naily [24]3 years ago
4 0

Answer:

x = 1 ; y = 3

Step-by-step explanation:

5(2x + 3y = 11)

2(5x + 3y + 14)

(distribute)

10x + 15y = 55

10x + 6y = 28

(subtract)

9y = 27

(divided 9 to both sides)

9 divided by 9 cancels out and 27 divided by 9 = 3

so..

y = 3

now, using any equation, (i’ll be using 2x + 3y =11) plug in the y value to find the x value

2x + 3y = 11

2x + 3(3) = 11

(multiply 3 x 3)

2x + 9 = 11

(subtract 9 from 9 and 11)

2x = 2

(divide 2 from both sides)

2 divided by 2 = 1

therefore...

x = 1

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use the properties of equality to show that the equation 6x + 3= 27 is equivalent to the equation 2x = 8
Sphinxa [80]

Given: 6x + 3 = 27

First what we do is to subtract 3 from both sides:

6x + 3 – 3 = 27 – 3

6x = 24

Then we divide both sides by 3:

6x/3 = 24/3

<span>2x = 8</span>

6 0
3 years ago
Read 2 more answers
How to write 13 hundreds 7 tens 9 ones 5 tenths 2 hundredths?
umka21 [38]
1379.52 is the answer to your question
4 0
3 years ago
&lt;1 and &lt;2 are supplementary angles. m &lt;1 is 4y+7, and m&lt;2 is 9y+4. Find m&lt;2.
Yuliya22 [10]

Okay, so supplementary angles = 180 degrees.

Starting equation : 4y + 7 + 9y + 4 = 180

Combine like terms : 13y + 11 = 180

Subtract 11 from both sides : 13y = 169

Divide 13 from both sides : y = 13

Insert y value into original m<2 equation : 9(13) + 4

Solve : 121 degrees


If you want to check your work, all you have to do is insert y value into original m<1 equation and then add both m<1 and m<2. If they equal 180, your answer is correct.

4(13) + 7 = 59

59 + 121 = 180



4 0
3 years ago
Read 2 more answers
During the assembly of a certain piece of exercise equipment, 3 welds are required during different phases of the assembly proce
Karolina [17]

Answer:

99.9973 %

Step-by-step explanation:

This is a binomial probability distribution.

Since the probability of satisfactory welds = 97% = 0.97 and the probability of defective welds = 3% = 0.03.

Since there are 3 welds and we require at least one being defective, our binomial probability is

P(x ≥ 1) = 1 - P(x ≤ 0) = 1 - P(0) = 1 - ³C₀(0.03)³(0.97)⁰ = 1 - 1 × ‭0.000027‬ × 1 = 1 - 0.000027 = 0.99997‬3 × 100% = 99.9973%

5 0
3 years ago
Put the following equation in slope intercept form: -4x -5y=-10
Alexus [3.1K]
Rearrange into y=mx + b
So

-4x - 5y = -10 Add 4x to each side
-5y = 4x - 10 Divide each side by -5
y = 4x/-5 -10/-5 Simplify
y = -4x/5 +2
3 0
3 years ago
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