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
kow [346]
2 years ago
6

Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2

Mathematics
1 answer:
nasty-shy [4]2 years ago
8 0
2a + 3b = -1
3a + 5b = -2

3(2a + 3b = -1)    -->    6a + 9b = -3
2(3a + 5b = -2)    -->    6a + 10b = -4
                                 -  ___________
                                               b = -1

2a + 3(-1) = -1
2a - 3 = -1
2a = 2
a = 1

2(1) + 3(-1) = -1    -->    2 - 3 = -1
3(1) + 5(-1) = -2    -->    3 - 5 = 2

Answer:
a = 1
b = -1

Hope this helps.
You might be interested in
I can't figure out how to do this problem.
Marianna [84]

Have you tried multiplying 5(3)+2(2)+1?

15 + 4 + 1 = 20 ?

Im sorry I'm not real good with math.

5 0
3 years ago
Read 2 more answers
What is a function and how does it work?
liq [111]
For f(3)...put 3 as the value of x in f(x)
for x.....put the value of f(x) from the given and equate it with 14..and solve
5 0
2 years ago
Find the value of n in this equation.
lisabon 2012 [21]

Answer:

  • D. 9

=========================

<h2>Given </h2>

Triangle with:

  • Base of n² -3,
  • Midsegment of 39.

<h2>To find</h2>

  • The value of n.

<h2>Solution</h2>

As per definition of midsegment, it is connecting the midpoints of two sides and its length is half the length of the opposite side of the triangle.

So we have:

  • (n² - 3)/2 = 39

Solve it for n:

  • n² - 3 = 78
  • n² = 81
  • n = √81
  • n = 9

Correct choice is D.

3 0
1 year ago
What is x divided by 6.2=-2.1
sergey [27]
X/6.2=-2.1
multiply both sides by 6.2
x=-13.02
4 0
3 years ago
Read 2 more answers
Z - 1,092.8 = 1,200<br><br>A. z = 2,292.8<br><br>B. z= 2,193.8<br><br>C. z= 2,291.2
OleMash [197]

Answer:

A. z = 2292.8 is your answer

Step-by-step explanation:

Isolate the variable (z). Note the equal sign, what you do to one side, you do to the other. Add 1092.8 to both sides

z - 1092.8 (+1092.8) = 1200 (+1092.8)

z = 1200 + 1092.8

z = 2292.8

A. z = 2292.8 is your answer

~

3 0
3 years ago
Other questions:
  • What are the real zeros of the function g(x) = x3 + 2x2 − x − 2?
    9·2 answers
  • There 8 ducks swimming in a pond. IF 4 have green wings and 4 have blue what is the fraction of blue wings
    5·1 answer
  • explain why is it important to line up decimals numbers by their place value when you add or subtract them
    12·2 answers
  • Dan's science magazine has a mass of 256.674 grams. What is the mass of his magazine rounded to the nearest tenth?
    13·2 answers
  • Solve 3^2x+3=243 for x.<br><br> A. x = 10<br> B. x = 2<br> C. x = 2/5<br> D. x = 1
    10·2 answers
  • a teacher spent 8 times as much money on prizes as she did on food.she spent $26 on prizes. she spent $3.25 on food. write a mul
    15·2 answers
  • A New York Times poll on women's issues interviewed 1025 women randomly selected from the United States, excluding Alaska and Ha
    10·1 answer
  • f(x) = -4x^2+12x-9f(x)=−4x 2 +12x−9f, left parenthesis, x, right parenthesis, equals, minus, 4, x, squared, plus, 12, x, minus,
    11·1 answer
  • What is bigger 2.5 meters or 8 feet plz explain
    11·2 answers
  • The distance between the starting point in the finishing line of the Boston marathon is 4 inches on an interactive course map if
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!