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
SVEN [57.7K]
3 years ago
12

Solving simultaneous equations by algebraic methods 3a+4x=29 2a-3x=-9

Mathematics
1 answer:
kogti [31]3 years ago
4 0
<span>3a+4x=29 (1st)
2a-3x=-9 (2nd)

multiply (1st) by 3 and (2nd) by 4

</span>9a + 12x = 87 (1st)
8a - 12x = -36 (2nd)
---------------------add
17a = 51
   a = 3

<span>2a-3x=-9
</span><span>2(3)-3x=-9
6 - 3x = -9
-3x = -15
   x = 5

answer
x = 5 and a = 3</span>
You might be interested in
Abby sells beauty products. She has a monthly salary of $1000. She also earns 1%
maxonik [38]

Answer: $1260

Step-by-step explanation:

Based on the information given, Abby's gross income for the month if her sales were $12500 will be:

= $1000 + (1% × $8000) + [4% × ($12500 - $8000)]

= $1000 + (0.01 × $8000) + (0.04 × $4500)

= $1000 + $80 + $180

= $1260

Her gross income is $1260

8 0
3 years ago
Need help solving a=1/2 (11.6cm+29cm) 23.2cm
Otrada [13]
The answer will be close to 470 1/2
3 0
3 years ago
Mary had a number of cookies. after eating one, she gave half the remainder to her sister. after eating another cookie, she gave
bonufazy [111]
7 cookies she ate 1 in total an she gave away 1 in total and she has 5 left
6 0
3 years ago
Read 2 more answers
Plz help!!.<br> Bahsjajajqjjajdjwk
vesna_86 [32]

Answer:

Opation b .60"

this is answers

6 0
3 years ago
Write two inequalities to compare -5and -3
AleksandrR [38]
-3 > -5
-5 < -3
hope it helps, sorry if I'm wrong
6 0
3 years ago
Other questions:
  • Please help me???? 25 points
    10·2 answers
  • An airline charges an extra fee if a carry-on bag weighs more than 30 pounds. After packing, Lorrie’s carry-on weighs 21.2 pound
    9·2 answers
  • A scientist wants a 66 ounce saline solution with concentration 12% . She has concentrations of 4% and 15% . How much of each so
    8·1 answer
  • Solve each inequality. Graph and check the solution.
    12·1 answer
  • Simplifica 2^4 . 2^3
    6·1 answer
  • Necesito tornillos de 5 cm para reparar un mueble. En la tlapalería los miden en pulgadas. ¿Cuál de las siguientes medidas es la
    15·1 answer
  • Which statement best reflects the solution(s) of the equation?
    12·1 answer
  • Pls help giving brainliest ty !
    15·2 answers
  • Help, i was out sick for most of the week before and didnt learn this materal, i really need help
    11·1 answer
  • How many fifths are there in 4 wholes? (see the illustrate given)​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!