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
timurjin [86]
3 years ago
7

X+y=20 3x-3y=30 Which values of x and y satisfy this system of equations?

Mathematics
1 answer:
puteri [66]3 years ago
4 0

x +y = 20 ( rewrite as x = 20-y)

3x - 3y =30

3(20-y) - 3y = 30

60-3y - 3y = 30

60-6y = 30

-6y = -30

y = -30 / -6 = 5

x=20-5 = 15

x = 15, y = 5

You might be interested in
If a= 2,b= -1,c= -3 and d = -2 evaluate the following Q1. ab-3b+4d , Q2. 5abd+3bc-2ax and Q3. 2(ab)^2+bc^2​
Serggg [28]

Answer:

the answer for question 1 is -7

8 0
3 years ago
How do you determine if two triangles are similar?
vagabundo [1.1K]
Side angle side, angle angle angle, ot angle side angle
7 0
3 years ago
Read 2 more answers
Mrs. Computer is 3 times older than her daughter, Mousy. The sum of their ages is 52. How old is Mousy?
grandymaker [24]
Mousy=m
Mrs. Computer=3m
m+3m=52
4m=52
m=52/4
m=13
mousy=13, Mrs. Computer=3*13=39 
8 0
3 years ago
Plz need help like now plz
nika2105 [10]
T) -7x+10y=20. M) -3x+y=-2 - ,
2(8x-5y)=35(2) -1(x+y)=-6(-)

-7x+10y=20. -3x+y=-2
16x-10y=70. -x-y=6

9x=90. -4x=4
[x=10] [x= -1]

-7(10)+10y=20. -3(-1)+y=-2
-70+10y=20. 3+y=-2
10y=90. [y= -5]
[y=9]
7 0
3 years ago
Solve the right triangle below. Round sides to the nearest thousandth and angles to the nearest degree.
aalyn [17]

Answer:

Option 4, BC = 12.689, m∠A = 58°, and m∠C = 32°

Hope this helps!

4 0
3 years ago
Other questions:
  • Dintr.o punga cu 400g de cafea s-au consumat prima data 0,087 kg ,iar a doua oara ,cu 23 g mai mult.Ce cantitate de cafea a rama
    11·1 answer
  • Graph the solutions of the inequality.<br> X-22 11
    11·1 answer
  • Solve the equation (linear equation)<br><br> <img src="https://tex.z-dn.net/?f=%28%5Cfrac%7B16%7D%7B9%7D%29%20%5E%7B2x%20%2B5%7D
    5·1 answer
  • If you earn 25$ babysitting for 3 hours. How much wold I earn in 7 hours?
    13·1 answer
  • How do you solve 1/5x&gt;30
    13·1 answer
  • Plz help thanks I really appreciate it
    6·2 answers
  • Which applies the power of a power rule properly to simplify this expression?
    10·2 answers
  • Clarissa has a bag of marbles. 9 are blue, 5 dre yellow, 2 dre purple, and 4 are green. What is the probability Clarissa reaches
    6·1 answer
  • Need help asap pls pls pls
    6·2 answers
  • How to find the surface area of a cube
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!