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
lora16 [44]
3 years ago
9

How to solve x-y=102x-y=17

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
8 0
X-y=10
2x-y=17
So to start
x=10+y
now replace x in the second equation
2(10+y) -y=17
20+2y-y=17
20+y=17
y=17-20
y=-3
Now replace y with -3 in any equation to find x

x-(-3) = 10
x+3=10
x=10-3
x=7
You might be interested in
What is the sum of a 7-term geometric series if the first term is −11, the last term is −171,875, and the common ratio is −5?
mr_godi [17]
The answer is -143231 
hope this helps:]
4 0
3 years ago
Read 2 more answers
16 POINTS
Marta_Voda [28]
Solve the following system using elimination:
{7 x + 2 y = -19 | (equation 1)
{2 y - x = 21 | (equation 2)

Add 1/7 × (equation 1) to equation 2:
{7 x + 2 y = -19 | (equation 1)
{0 x+(16 y)/7 = 128/7 | (equation 2)

Multiply equation 2 by 7/16:
{7 x + 2 y = -19 | (equation 1)
{0 x+y = 8 | (equation 2)

Subtract 2 × (equation 2) from equation 1:
{7 x+0 y = -35 | (equation 1)
{0 x+y = 8 | (equation 2)

Divide equation 1 by 7:
{x+0 y = -5 | (equation 1)
{0 x+y = 8 | (equation 2)

Collect results:
Answer: {x = -5, y = 8
8 0
3 years ago
MATH HELP PLEASE 10 POINTS !
joja [24]
Three times the difference of a number n and 1
7 0
3 years ago
Will give brainliest-H(t)=-16t^2+28t
____ [38]
For this case we have the following equation:
 H (t) = - 16t ^ 2 + 28t
 When the dolphin finishes a jump, then the height is equal to zero.
 We have then:
 -16t ^ 2 + 28t = 0
 We look for the roots of the polynomial:
 t1 = 0
 t2 = 1.75 s
 Therefore, the dolphin takes 1.75 seconds to make a jump.
 Answer:
 
it will take for the dolphin to make one jump about:
 
t = 1.75 s
4 0
3 years ago
What is the answer to -3/4 (2)(-6) in fraction form
nasty-shy [4]

I'm assuming the question looks like this?

\frac{-3}{4} (2)(-6)

If so then the answer should be:

\frac{-3}{4} (2)(-6)=\frac{-3}{4} (-12)=9

Hope this helps!

4 0
3 years ago
Other questions:
  • A bag of marbles contains five red marbles, 12 blue marbles,
    14·1 answer
  • Rearrange the equation so U is the independent variable. 4u+8w=−3u+2w
    13·2 answers
  • If a football player passes a football from 4 feet off the ground with an initial velocity of 36 feet per second, how long will
    8·2 answers
  • Which of the following is the best tool to measure the width of a chair? A. yardstick B. measuring tape C. ruler
    13·1 answer
  • Factor the expression completely.<br> 56x - 64
    13·1 answer
  • Jason has 120 pieces of art. He puts 5% of them in an art show. How many pieces of art does Jason put in the art show?
    5·1 answer
  • Write the following as a mathematical expression with one variable.
    13·1 answer
  • the sea leopard fishing boat has pulled into harbor with its cargo hold full crabs. The captain must let the harbormaster know h
    5·1 answer
  • Find the simplified product: 2/5x3(-3/10x2
    13·1 answer
  • Hey guys i need help
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!