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swat32
3 years ago
8

3. [6x - 2y=2. (2 + 6x=y

Mathematics
1 answer:
Hunter-Best [27]3 years ago
4 0

Answer:

3. [6x - 2y=2.

(2 + 6x=y

Step-by-step explanation:

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Solve the following system of equations:<br> 4x+5y=23<br> -3x-7y=-14
Korvikt [17]
Basically you're solving for both variables here.
I prefer elimination method so that is what I used.
I started off by multiplying each equation in order to get one of the variables at the same value so it would be possible to cancel it out.
Multiplying the first equation by 3 gave me,
12x + 15y = 69
Then I multiplied the second equation by 4,
-12x + 28y = -56
As you can see, it's not possible to cancel out the x variable.
12x + 15y = 69
+(-12x + 28y = -56)
_____________
13y = 13
Then just solve for y which gives you -1.
After you have one variable solved simply insert it into one of the original equations to find the other variable.
4x + 5(-1) = 23
4x - 5 = 23
4x = 28
x = 7.
And there you have it! Hope this helped!

5 0
3 years ago
Ben sold his small online business for $100,000. The purchaser will pay him $20,000 today, then $20,000 every year for the next
kifflom [539]

Answer:

c. 92,598

Step-by-step explanation:

20000 + 20000/1.04 + 20000/(1.04^2) + 20000/(1.04^3) + 20000/(1.04^4)= 20000 + 19230.77 + 18491.12 + 17779.73 + 17096.08

= 92597.

= 92,598

7 0
2 years ago
11 points<br> Please help me find the value of x
Bond [772]

Answer:

166°

Step-by-step explanation:

Let's label our triangle.

We'll name the left one, next to ∠x, ∠A.

The bottom one, next to the 97°, ∠B.

And the top one, ∠C.

We know what angle ∠A is because its a supplementary angle to the 97° one.

180° - 97° = 83°

We know that the triangle is isosceles, so that gives us ∠C as well. 83°

∠A is the last remaining angle.

The sum of the angles to our ΔABC is 180°.

∠A = 180° - ∠B - ∠C

∠A = 180° - 83°- 83°

∠A = 14°

∠x and ∠A are supplementary angles!

∠x = 180° - ∠A

∠x = 180° - 14°

∠x = 166°

4 0
3 years ago
Read 2 more answers
21 5/8% as a decimal
Hitman42 [59]
21.625 is the answer
4 0
2 years ago
What percent is 7/34
Artemon [7]

Answer:

20.58%

Step-by-step explanation:

8 0
3 years ago
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