Question

3x - 4y =-6 2x + 4y = 16

134

likes
671 views

Answer to a math question 3x - 4y =-6 2x + 4y = 16

Expert avatar
Ali
4.4
92 Answers
Solution:
1. Given the equations:
* 3x - 4y = -6
* 2x + 4y = 16

2. Add the two equations to eliminate y:
3x - 4y + 2x + 4y = -6 + 16
This simplifies to:
5x = 10

3. Solve for x:
x = \frac{10}{5} = 2

4. Substitute x = 2 back into the second equation to solve for y:
2(2) + 4y = 16
4 + 4y = 16
4y = 16 - 4
4y = 12
y = \frac{12}{4} = 3

The solution to the system of equations is:
* x = 2
* y = 3

Frequently asked questions (FAQs)
What is the value of sin 30°?
+
What is the length of the altitude of an isosceles triangle with base length 10 inches and side lengths of 8 inches?
+
What is the resultant displacement when a vector of length 5 units is added to a vector of length 3 units, both directed in the positive x-direction?
+
New questions in Mathematics
How to find the value of x and y which satisfy both equations x-2y=24 and 8x-y=117
-6n+5=-13
Since one of the three integers whose product is (-60) is (+4), write the values that two integers can take.
2x-y=5 x-y=4
Kayla has $8,836.00 in her savings account. The bank gives Kayla 5%of the amount of money in account as a customer bonus. What amount of money does the bank give Kayla? Justify your answer on a 6th grade level.
Identify a pattern in the list of numbers.Then use this pattern to find the next number. 37,31,25,19,13
Pedro had 80% of the amount needed to buy a game. Of this amount, you spent 15% on a watch and therefore, you will need to add another R$640.00 to purchase this game. Is the value of the game?
In a grocery store, when you take out 3 peppers and 4 carrots, there are 26 peppers and 46 carrots left. How many peppers and carrots were there initially?
Determine the general equation of the straight line that passes through the point P (2;-3) and is parallel to the straight line with the equation 5x – 2y 1 = 0:
A person decides to invest money in fixed income securities to redeem it at the end of 3 years. In this way, you make monthly deposits of R$300.00 in the 1st year, R$400.00 in the 2nd year and R$500.00 in the 3rd year. Calculate the amount, knowing that compound interest is 0.6% per month for the entire period. The answer is 15,828.60
TEST 123123+1236ttttt
Buffalo Company makes and sells shampoo. Each unit requires $1.40 labor costs, material costs per unit are $0.90 and other variable costs are $0.30. It sells shampoo for $4.45 to retailers. Fixed costs are $15,000. It sold 25,000 units in the current month. What is the Break-Even point in units? What is the Break-Even point in dollars? What is the contribution margin of Buffalo Company?
Express the trigonometric form of the complex z = -1 + i.
In measuring the internal radius of a circular sewer the measurement is 2% too large. If this measurement is then used to calculate the circular cross-sectional area of the pipe: Determine, by using the binomial theory, the percentage error that will occur compared to the true area.
5x+13+7x-10=99
A building lot is in the shape of a triangle with a base of 133 feet and a height of 76 feet. What is it's area in square feet?
simplify w+[6+(-5)]
16-(x²+x+2)²
Define excel and why we use it?
A gas is leaking at 3.5ft3/min in a room of 2.9m by 6.9ft by 15.7m. How long would it take (in seconds) for 22% of the room to reach the LFL, if the gas has a LFL of 2.51%?