$MathMaster logo$

MathMaster

Home
general
x 3y 4 x 2y 4 solve by elimination

Question

X+3y=4 X+2y=4 Solve by elimination

54

likes

271 views

Answer to a math question X+3y=4 X+2y=4 Solve by elimination

$Expert avatar$

4.5

112 Answers

1. Subtract the second equation from the first equation:

(X + 3y) - (X + 2y) = 4 - 4

X + 3y - X - 2y = 0

y = 0

2. Substitute

y = 0

into the second equation:

X + 2(0) = 4

X = 4

Correct [Solution]:

(4,0)

Frequently asked questions (FAQs)

What is the Pythagorean theorem? How can it be used to find the length of a side in a right triangle?

+

What is the variance of a data set {1, 2, 3, 4, 5}?

+

Math question: Find the x-value(s) for which the reciprocal function f(x) = 1/x is equal to 4. (

+

New questions in Mathematics

what is 3% of 105?

I) Find the directional derivative of 𝑓(𝑥, 𝑦) = 𝑥 sin 𝑦 at (1,0) in the direction of the unit vector that make an angle of 𝜋/4 with positive 𝑥-axis.

In a store there are packets of chocolate, strawberry, tutti-frutti, lemon, grape and banana sweets. If a person needs to choose 4 flavors of candy from those available, how many ways can they make that choice?

The sum of two numbers is 6, and the sum of their squares is 28. Find these numbers exactly

Margin of error E=0.30 populations standard deviation =2.5. Population means with 95% confidence. What I the required sample size (round up to the whole number)

Desarrolla (2x)(3y + 2x)5

A storage maker price is $2.50 per square feet. Find the price of a custom shed 4 yards long, and 5yards wide and 8 feet tall

Use the power rule for logarithms to solve the following word problem exactly. If you invest $1, 000 at 5% interest compounded annually, how many years will it take before you have $2,000?

The two sides of the triangle are 12 cm and 5 cm, and the angle between the sides is 60°. Cover the area of the triangle!

The sick-leave time of employees in a firm in a month is normally with a mean of 100 hours and a standard deviation of 20 hours. Find the probability that the sick-leave time of an employee in a month exceeds 130 hours.

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.

Write the equation of the line that is parallel to y= 4x-7 and has a y- intercept at (0,5)

7- A printing company found in its investigations that there were an average of 6 errors in 150-page prints. Based on this information, what is the probability of there being 48 errors in a 1200-page job?

1. The cost to transport 250 packages of cement 120 kilometers is $600. What will be the cost to transport 500 packages 300 kilometers?

Convert (324)𝑓𝑖𝑣𝑒 into base-ten

The perimeter of a rectangular rug is 42 feet. The width is 9 feet. What is the length?

Paul invites 12 friends to his birthday. He wants to give 15 candies to everyone two. The candies are sold in packs of 25. How many should he buy? packages?

(3.1x10^3g^2)/(4.56x10^2g)