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
Tcecarenko [31]
2 years ago
10

X^2+y^2=169, 3x+2y=39 please answer using substitution and each step

Mathematics
1 answer:
Oksanka [162]2 years ago
7 0

Answer:

x=13,y=0

Step-by-step explanation:

We are given a system of equations

{x}^{2}  +  {y}^{2}  = 169 -  - eqn \: 1 \\ 3x + 2y = 39 -  - eqn \: 2

For equation 1,square all terms to reduce it

√x²+√y²=169

x+y=13

Make x the subject as required by the question to use substitution method

x=13-y

Plug x=13-y into eqn 2

3(13-y)+2y=39

39-3y+2y=39

39-y=39

y=39-39=0

Plug y=0 into equation 1

x+0=13

x=0

You might be interested in
Been stuck on this for a while man....................
bonufazy [111]

Answer:

2) 6

4) 9

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Change equation into y=mx+b <br><br> 3x+2y=12
Sedbober [7]
Y=-3/2x + 2 this is because of algebra
6 0
2 years ago
Read 2 more answers
Please someone help me i dont know the answer
romanna [79]

Answer:

31 yrs

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A right triangle as shown below
anastassius [24]

Answer:

sin a = 7/25

cos a = 24/25

tan a = 7/24

Step-by-step explanation:

Trig. How wonderful. I get tripped up on these types of problems some times, so I decided to try to help! To start, write out the three ratios.

SOH (sine=opposite/hypotenuse) CAH (cosine=adjacent/hypotenuse) TOA (tangent=opposite/adjacent)

Then, label the triangle with “hypotenuse” “adjacent” and “opposite.” This helps us correctly use and find the raitos. Then, use these ratios to find out the ratios of A!

sin a = 7/25

cos a = 24/25

tan a = 7/24

If needed, just divide the ratios to get their decimal form!

6 0
3 years ago
Charlotte borrowed $834 to pay for a weekend trip the interest rate she agreed to pay is 3%. If she takes 2 years to pay back th
ratelena [41]
Maybe it is
Explanation
8 0
2 years ago
Other questions:
  • Simplifying Nonperfect Roots
    11·1 answer
  • Point Q is the image of Q (-5,1) under a translation by 6 units to the right and 2 units down
    14·1 answer
  • The dot plot shows the ACT Essay Scores for the Class of 2017. Write True or False based on the below statements and the provide
    15·1 answer
  • 3. One morning, the elevator in Emilio's apartment building was out of order. When he walked down the stairs from
    12·1 answer
  • A parabola intersects the X-axis at X
    7·1 answer
  • !NO FILES ! <br> Help me ASAP :((
    9·1 answer
  • This is a trigonometry question
    6·1 answer
  • PLEASE HELP!<br><br> Find the measure of
    7·1 answer
  • A bakery has 18 large trays of bagels and 20 small trays of bagels. Each large tray holds 30 bagels and each small tray holds 15
    15·1 answer
  • Determine whether the triangle with given sides is right triangle or not
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!