1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aliun [14]
4 years ago
8

Weegy solve the system of equations 2x+3y=40 and -2x+2y=20

Mathematics
1 answer:
prisoha [69]4 years ago
5 0

adding the 2 equations eliminates x and gives:-

5y = 60

y = 12

Plug y = 12 into the first equation:-

2x + 3(12) = 40

2x = 40 - 36 = 4 so x = 2

Answer is x = 2 and y = 12.

You might be interested in
a local store sells oranges at a price of 6 for $9.00 what is the unit rate? how much will 10 oranges cost
Hitman42 [59]
All The oranges would cost 90.00 dollars because 9x10=90 so there's you're answer
7 0
3 years ago
What is the value of x?<br><br> A. 2 Units<br> B. 3 Units<br> C. 5 Units<br> D. 8 Units
Fudgin [204]

You need the formula for geometric mean for right triangles as it applies to the altitude. For us, that formula will be \frac{BD}{AD}=\frac{CD}{BD} where BD is your altitude. The formula then, filled in accordingly, would be \frac{10}{x}=\frac{4x}{10}. We cross multiply to get that 4x^2=100. Divide both sides by 4 to get x^2=25, so x = 5. Choice C is the one you want.

7 0
3 years ago
Multiply the following complex numbers (6+3i)(3+i)
Dvinal [7]

Answer:

15i+15

Step-by-step explanation:

(6+3i)(3+i)

18+9i+6i+3i^2

18+15i+3(-1)

18+15i-3

15i+15

6 0
4 years ago
Use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 50 and the 8th term is 18.
SpyIntel [72]
The\ geometric\ mean\ of\ x\ and\ y:a=\sqrt{xy}\\\\a_6=50;\ a_8=18;\ a_7=?\\\\a_7=\sqrt{a_6\cdot a_8}\\\\subtitute\\\\a_7=\sqrt{50\cdot18}=\sqrt{900}=30\\\\Answer:\boxed{a_7=30}
4 0
4 years ago
Read 2 more answers
Solve for y<br><img src="https://tex.z-dn.net/?f=3x%20-%20y%20%3D%20%20-%202y" id="TexFormula1" title="3x - y = - 2y" alt="3x -
SVETLANKA909090 [29]

Step 1: Subtract 3x from both sides. Leaving us with -y = -3x -2y

Step 2: Add 2y to both sides. Leaving us with y = -3x

So, your answer would be y = -3x

4 0
3 years ago
Other questions:
  • The time to complete a project is inversely proportional to number of people who are doing the project. A certain project can be
    15·1 answer
  • How to find the missing angle of a triangle?
    9·1 answer
  • The function f(x) = 1.50x + 12.50 relates how much Kelsey pays for digital service, f(x), to the number of movies, x, she stream
    9·1 answer
  • Match each function formula with the corresponding transformation of the parent function y = 3 x
    12·1 answer
  • I HAVE 5 MINS PLZ HELP!
    12·1 answer
  • Find the product.<br><br> (6xyz4)(5xy3)<br><br> PLEASE HELP!!! ASAP!!
    15·2 answers
  • Which values of a, b, and c correctly represent the answer in simplest form? 3 and one-half divided by 2 and one-fourth = a Star
    6·2 answers
  • Please help. giving more brainliest.
    6·1 answer
  • If you wanted to find the depth of a submarine during a dive, would it be more reasonable to use an equation with the rate in fe
    12·1 answer
  • 2+6<br> HELP ME PLEASE !!!!!!!!!!!!!!!!!!!!!!!!!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!