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Lynna [10]
3 years ago
15

Use the elimination method to solve the system of equations choose the correct order pair.

Mathematics
2 answers:
ivann1987 [24]3 years ago
8 0

Answer:

Its the third choice:

(2, 5).

Step-by-step explanation:

6x + 4y = 32

-6x + 4y = 8     Adding the 2 equations:

0 + 8y = 40

8y = 40

y = 5

Now substitute for y in the first equation:

6x  + 4(5) = 32

6x = 32 - 20 = 12

x = 2.


vredina [299]3 years ago
5 0
Add equation 1 and 2 to remove 6x. You will end up with
8y = 40
By solving, y=5

Sub 5 into any equation
6x + 4(5) = 32
By solving, x=2
The ordered pair is (2,5)
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Mike is playing cards with his sister when he draws a card from a pack of 35 cards numbered from 1 to 35 what is the probability
Ganezh [65]
1/5 because there are 7 numbers divisible by 5 from 1 to 35. 5,10, 15, 20,25,30,35, and out of those there are 35 cards, 7 out of 35 or 7/5 can be simplified to 1/5.
4 0
4 years ago
Read 2 more answers
What is the sum of 20x^2-10x-30
ivann1987 [24]

Answer:

The sum of the roots is 0.5

Step-by-step explanation:

<u><em>The correct question is</em></u>

What is the sum of the roots of 20x^2-10x-30

we know that

In a quadratic equation of the form

ax^{2} +bx+c=0

The sum of the roots is equal to

-\frac{b} {a}

in this problem we have

20x^{2} -10x-30=0  

so

a=20\\b=-10\\c=-30

substitute

-\frac{(-10)} {20}=0.5

<u><em>Verify</em></u>

Find the roots of the quadratic equation

The formula to solve a quadratic equation is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

a=20\\b=-10\\c=-30

substitute

x=\frac{-(-10)\pm\sqrt{-10^{2}-4(20)(-30)}} {2(20)}

x=\frac{10\pm\sqrt{2,500}} {40}

x=\frac{10\pm50} {40}

x=\frac{10+50} {40}=1.5

x=\frac{10-50} {40}=-1

The roots are x=-1 and x=1.5

The sum of the roots are

-1+1.5=0.5 ----> is ok

5 0
3 years ago
Plzz Need Help!!! 15 Points!!! And will give you Brainliest answer!!!!
irakobra [83]

Answer:

the answer is A. p ∨ q

i think

Step-by-step explanation:


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4 years ago
Please help<br><br> (50 points)
DiKsa [7]

Answer:

RQS = 63

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Step-by-step explanation:

because QS is an angle bisector, PQS =SQR and PQR = 2*PQS.

3 0
3 years ago
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How much interest will be paid in 1 year for a loan of $3600 at 8 1/2% simple interest?
solong [7]
The answer to your question is 260,100
7 0
3 years ago
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