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
Amanda [17]
3 years ago
9

Simultaneous equationsx+y=5x squared-y squared=15​

Mathematics
2 answers:
expeople1 [14]3 years ago
4 0

Answer: x=4, y=1.

Step-by-step explanation:

\left \bigg \{ {\big{x+y=5} \atop\big {x^{2}-y^{2}  =15}} \right.\\\\x+y=5\\x+y-y=5-y\\x=5-y\\\\(5-y)^{2} -y^{2} =15\\5^{2} -10y+y^{2} -y^{2}=15\\25-10y=15\\25-10y-25=15-25\\ -10y=-10\\-10y \div (-10)=-10 \div (-10)\\y=1\\\\x+y=5\\x+1=5\\x+1-1=5-1\\x=4

Oxana [17]3 years ago
3 0

Answer:

(4,1)

Step-by-step explanation:

easiest method is to graph each equation and look for point(s) of intersection

You might be interested in
NO LINKS!!
victus00 [196]

Step-by-step explanation:

<u>Given function:</u>

  • y = |x + 4| - 1

<em>See the graph below</em>

According to the graph we see that

The minimum is (-4, -1) and zero's are (-5, 0) and (-3, 0)

<u>Function is positive: </u>

  • When x < - 5 and x > -3

<u>Negative:</u>

  • When x is between -5 and -3

<u>Increasing:</u>

  • When x > -4

<u>Decreasing:​</u>

  • When x < -4

6 0
2 years ago
I dont understand if anybody can help me i would be happy​
SCORPION-xisa [38]

Answer:

  • (2, 3)

Step-by-step explanation:

<u>The rule for this dilation is:</u>

  • (x, y) → (x/2, y/2)

<u>Apply this rule to point B(4, 6):</u>

  • B(4, 6) → B'(2, 3)
4 0
3 years ago
Read 2 more answers
How many numbers lines comprise the basic parts of a Cartesian coordinate system
Colt1911 [192]
Two:  the horizontal axis and the vertical axis.
8 0
3 years ago
The sum of two numbers is 150 and the ratio of the same two numbers is 3 to 2 . find the bigger number
krek1111 [17]
Ratio- 3: 2

3x + 2x = 150
5x = 150
x = 30

3x is the larger number so plug in the x value with 30.

3x
3 x 30
90

The larger number is 90.

Hope I helped.. ^^
8 0
3 years ago
Read 2 more answers
Help me please help me helpm
Firlakuza [10]

Answer:

nhjggggggggggggj

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Help please and explain
    7·1 answer
  • Please help! it’s for 20 points
    13·1 answer
  • Which expression shows how to find the number of students that play each instrument. How many students play the clarinet?
    13·2 answers
  • Gary works as a sales representative in a clothing store.He gets a fixed salary of $1,500 per month.He also gets a commission of
    9·1 answer
  • Mark wrote the highest score he made on his new video game as the product of 70*6000. Use the associative and commutative proper
    11·1 answer
  • What is the sum of 16.5 x 10 exponent 4
    7·2 answers
  • 4 - (-8) =<br> What is the answer
    10·1 answer
  • A ship traveled at an average rate of 25 miles per hour going west. It then traveled at an average rate of 19 miles per hour hea
    9·2 answers
  • Find each product mentally 4×5 1/8 and 7×3.8​
    6·1 answer
  • A sofa is 900 more than the price of c which system of equation can be used to find price of each piece
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!