Question

3x-2y=15 x=3

51

likes
255 views

Answer to a math question 3x-2y=15 x=3

Expert avatar
Clarabelle
4.7
73 Answers
Substitute \( x = 3 \) into the equation \( 3x - 2y = 15 \):

3(3) - 2y = 15

Simplify:

9 - 2y = 15

Isolate \( y \) by subtracting 9 from both sides:

-2y = 6

Solve for \( y \) by dividing both sides by -2:

y = -3

Final values:

x = 3, \; y = -3

Frequently asked questions (FAQs)
What is the probability of drawing a red card from a deck of 52 playing cards?
+
What is the derivative of f(x) = ∫(0 to x) (3t^2 + 2) dt, using the Fundamental Theorem of Calculus?
+
What is the equation of a parabola with a vertex at (3, 4) and a focus at (3, 2)?
+
New questions in Mathematics
A car tire can rotate at a frequency of 3000 revolutions per minute. Given that a typical tire radius is 0.5 m, what is the centripetal acceleration of the tire?
Solve: −3(−2x+23)+12=6(−4x+9)+9.
Imagine that you are in an electronics store and you want to calculate the final price of a product after applying a discount. The product you are interested in has an original price of $1000 MN, but, for today, the store offers a 25% discount on all its products. Develop an algorithm that allows you to calculate the final price you will pay, but first point out the elements.
I need .23 turned into a fraction
The data set (75, 85, 58, 72, 70, 75) is a random sample from the normal distribution No(µ, σ). Determine a 95% two-sided confidence interval for the mean µ .
4x/2+5x-3/6=7/8-1/4-x
A merchant can sell 20 electric shavers a day at a price of 25 each, but he can sell 30 if he sets a price of 20 for each electric shaver. Determine the demand equation, assuming it is linear. Consider (P= price, X= quantity demanded)
Calculate the value of a so that the vectors (2,2,−1),(3,4,2) and(a,2,3) are coplanar.
If A and B are any events, the property that is not always true is: a) 0 ≤ 𝑃(𝐴 ∩ 𝐵) ≤ 1 b) 𝑃(Ω) = 1 c) 𝑃(𝐵) = 1 − 𝑃(𝐵𝑐) d) 𝑃(∅) = 0 e) 𝑃(𝐴 ∪ 𝐵) = 𝑃(𝐴) + 𝑃(𝐵)
In a company dedicated to packaging beer in 750 mL containers, a normal distribution is handled in its packaging process, which registers an average of 745 mL and a standard deviation of 8 mL. Determine: a) The probability that a randomly selected container exceeds 765 mL of beer b) The probability that the beer content of a randomly selected container is between 735 and 755 mL.
Professor Vélez has withdrawn 40 monthly payments of $3,275 from her investment account. If the investment account yields 4% convertible monthly, how much did you have in your investment account one month before making the first withdrawal? (Since you started making withdrawals you have not made any deposits.)
(X+2)(x+3)=4x+18
17. A loan for $104259 is taken out for 10 years with an annual interest rate of 9.4%, compounded quarterly. What quarterly payment is required to pay the loan off in 10 years? Enter to the nearest cent (two decimals). Do not use $ signs or commas in the answer.
Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below: $11.00 $8.00 $6.00 $3.00 $7.00 a.) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*) $ < μ < $ b.) If the sample size were larger, with everything else remaining the same, would the margin of Error increase or decrease? Decrease Increase c.) If the Confidence level were 95% instead of 90%, would the range (size) of the Confidence Interval be larger or smaller? Larger Smaller
Given the word WEIRD, determine a four-letter offspring that can be formed with the letters of the word written above
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
How many cards do you expect to pull from a poker deck until you get an ACE?
What js the greatest 4-digit even number that can be formed by 3,6,1,4?
The slope of the tangent line to the curve f(x)=4tan x at the point (π/4,4)
x(squared) -8x=0