MathMaster
Q & A
Blog
Tutorials
Calculators
Privacy policy
CONTACT US
Menu
Home
general
find by substitution method 2x y 3 3x y 4
Question
Find by substitution method 2x-y=3 3x-y=4
Like
120
likes
602
views
Answer to a math question Find by substitution method 2x-y=3 3x-y=4
Tiffany
4.5
103
Answers
$x=\frac{3+y}{2}$
$\begin{bmatrix}3\cdot \frac{3+y}{2}-y=4\end{bmatrix}$
$\begin{bmatrix}\frac{9+y}{2}=4\end{bmatrix}$
$y=-1$
$x=\frac{3-1}{2}$
$x=1$
$x=1,y=-1$
Frequently asked questions (FAQs)
Math question: What is the limit of (3x^2 + 5x - 2) / (x^2 + 4) as x approaches 2?
+
Question: Simplify (2^3 * 2^4) / (2^2)^2
+
What is the factored form of 4x^3 + 12x^2 - 8x?
+
New questions in Mathematics
calculate the derivative by the limit definition: f(x) = 6x^3 + 2
Y=-x^2-8x-15 X=-7
What is the coefficient of elasticity of the material that must be placed on the heel of the 10 cm high clog, with a base area of 2 cm² so that it deforms only 2 cm when the force on it will be a maximum of 600 N.
3(2+x)-2(2x+6)=20-4x
Karina has a plot of 5000 square meters in which she has decided that 60% of it will be used to plant vegetables. Of this part, 12% will be dedicated to planting lettuce. How much surface area of the plot will be used to grow lettuce?
How many kilometers does a person travel in 45 minutes if they move at a rate of 8.3 m/s?
If L (-2, -5) reflected across y = -4. What are the coordinates of L?
Determine the equations of the recipes that pass through the following pairs of points P1 (2;-1) and p2 (4;-1)
Derivative of x squared
Suppose X has a Poisson distribution, with a mean of 0.4. Determine the probability that x is at most 2.
Which of the following is the product of multiplying twenty-seven and twenty-five hundredths by nine and twenty-seven hundredths?
Suppose 56% of politicians are lawyers if a random sample of size 564 is selected, what is the probability that the proportion of politicians who are lawyers will differ from the total politicians proportions buy more than 4% round your answer to four decimal places
224 × (6÷8)
The sum of two numbers is equal to 58 and the largest exceeds by at least 12. Find the two numbers
A company that manufactures personal hygiene items purchases machinery for $220,000 that is considered to last 7 years; it is estimated that at the end of the period it will have a salvage value of $1000. Find: to. The depreciation rate. b. The book value at the end of the sixth year.
If f(x,y)=6xy^2+3y^3 find (∫3,-2) f(x,y)dx.
What’s the slope of a tangent line at x=1 for f(x)=x2. We can find the slopes of a sequence of secant lines that get closer and closer to the tangent line. What we are working towards is the process of finding a “limit” which is a foundational topic of calculus.
A circular window has a rubber molding around the edge. If the window has a radius of 250 mm, how long is the piece of molding that is required ? (To the nearest mm)
nI Exercises 65-68, the latitudes of a pair of cities are given. Assume that one city si directly south of the other and that the earth is a perfect sphere of radius 4000 miles. Use the arc length formula in terms of degrees to find the distance between the two cities. 65. The North Pole: latitude 90° north Springfield, Illinois: latitude 40° north
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?
Download NOW
Apple store
Download NOW
Google play
Solve NOW
Try On Web
You might be interested in
A circle with a 12-inch diameter is folded in half and then folded in half again. What is the area of the resulting shape?
The sum of an infinite geometric series is 13,5 The sum of the same series, calculated from the third term is 1,5. Q. Calculate r if r>0.
3x+5y=11 2x-3y=1
*Question!!* *Victory saved 3,000 in first bank and 2,000 Naira in union bank PSC with interest rate of X% and Y% per annual respectively his total interest in one year is #640. If she has saved 2,000 naira with first bank and 3,000 naira in union bank for same period she would have made extra 20# as additional interest, then find the value of X and Y
132133333-33
Suppose SAT reading scores are normally distributed with a mean of 496 and a standard deviation of 109. The University plans towards scholarships for students who scores are in the top 7%. What is the minimum score required for the scholarship round your answer to the nearest whole number.
The thermal representation f(x) = 20 times 0.8 to the power of x is known from an exponential function f. Specify the intersection point with the y-axis
During a fishing trip Alex notices that the height h of the tide (in metres) is given by h=1−(1/2)*cos(πt/6) where t is measued in hours from the start of the trip. (a) Enter the exact value of h at the start of the trip in the box below.
A stunt man jumps horizontally from a building to the roof of a garage that is 2 meters lower. How fast does he need to be to land on the roof of the said garage that is 3 meters away from the building?
A company receives sales in $20 per book and $18 per calculator. The per unit cost to manufacture each book and calculator are $5 and 4$ respectively. The monthly (30 day) cost must not exceed $27000 per month. If the manufacturing equipment used by the company takes five minutes to produce a book and 15 minutes to produce a calculator, how many books and calculators should the company produce to maximise profit? Please solve graphically and
The points (-5,-4) and (3,6) are the ends of the diameter of the circle calculate subequation
TEST 123123+123123
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 grading on a $159,775 house comes to $3974.75. What percent of the total cost is this? (Express your answer to the nearest hundredth percent.)
A contractor gives a bank note for $10250 at a rate of 1% for one month. How much interest is charged for 4 months?
a) Statistics scores are normally distributed with the mean of 75 and standard deviation of 7. What is the probability that a student scores between 80 and 88
Find the equation of a straight line that has slope 3 and passes through the point of (1, 7) . Write the equation of the line in general forms
-6 - t / 4 = -1
16-(x²+x+2)²
Sin(5pi/3)