Solve of system of equation.
9x + 2y = -38
9x+10y=26.

Answers

Answer 1

Answer:

Final answer:

The system of equations can be solved using the method of elimination. The solution is x = -6 and y = 8.

Explanation:

To solve this system of equations, we can use the method of elimination. First, we'll multiply the first equation by 10 and the second equation by 2 to make the coefficients of x the same. This gives us:

90x + 20y = -380
18x + 20y = 52

Now, we can subtract the second equation from the first to eliminate y:

72x = -432

Dividing both sides by 72, we find x = -6.

Substituting this value of x into one of the original equations, we can solve for y:

9(-6) + 2y = -38

Simplifying, we get -54 + 2y = -38

Adding 54 to both sides, we have 2y = 16

Dividing both sides by 2, we find y = 8.

Learn more about Solving systems of equations here:

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Answer 2

Answer:

Answer:

(-6 , 8 )

Hope this helps!

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If x = 9 and y = 4, work out the value of xy/ 2

Answers

answer: 3/1

Step-by-step explanation:

This is like a puzzle, and each part tells you something. The first statement tells us that x is a negative number and y is a positive number. The next statement, x + y , is what we need to know. The first absolute value gives us x. Solve for the absolute value, that is, what is inside can be either negative or positive so either x-9 = 12 or x - 9 = -12. Solve those for x = 21 or x = -3. We know that x is negative from that first statement, , so x is -3. Do the same with the other absolute value to solve for y, then add the two together to get your final answer. hope this helps a bit!

The width of a rectangle is (2x – 7)inches and its width is (x^2 – 5) inches. Find an expression for the perimeter of the rectangle.a. 2x^3 + 35
b. x^2 - 2x + 2
c. x^2 + 2x – 12
d. 2x^2 + 4x – 24

Answers

Answer:

(2x²+4x-24) in.

Step-by-step explanation:

the answer is D you’re welcome

How many solutions does this system of equations have y=5x-4and y=5x+2 1.infinitely many 2. 0 3. 1 4. 2

Answers

Number 1. Infinitely many

Which of the following is a polynomial with roots 4, −5, and 7?Question 4 options:

1) f(x) = x3 − 6x2 − 27x + 140
2) f(x) = x3 − 6x2 − 20x + 27
3) f(x) = x3 − 20x2 − 27x + 35
4) f(x) = x3 − 20x2 − 35x + 140

Answers

If x = 4, then the factor is (x - 4); if x = -5, then the factor is (x + 5); if x = 7, then the factor is (x - 7). We need to FOIL all these together to get a third degree polynomial. (x - 4)(x + 5) = (x^2 + x - 20). Now multiply that by (x- 7): (x^2+x-20)(x-7) = $x^3+x^2-20x-7x^2-7x+140$ . Combine like terms to get $x^3-6x^2-27x+140$ , the first choice above.

Answer: 1) f(x) = x3 − 6x2 − 27x + 140

Which of the following is a polynomial with roots 4, −5, and 7?

Question 4 options:

1) f(x) = x3 − 6x2 − 27x + 140

2) f(x) = x3 − 6x2 − 20x + 27

3) f(x) = x3 − 20x2 − 27x + 35

4) f(x) = x3 − 20x2 − 35x + 140

Step-by-step explanation:

I just did the assignment and the correct answer was 1). f(x) = x3 − 6x2 − 27x + 140. Hope this helps.

Good Luck!!

A radio station gave away 108 tickets to a concert. They gave away 3 times as many tickets to listeners as they gave to employees. How many tickets did they give away to employees?