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
Mademuasel [1]
2 years ago
8

3. Solve the system of equations using linear combination. a + c = 9 8a + 4.5c = 58

Mathematics
2 answers:
sergij07 [2.7K]2 years ago
7 0
A+c=9 so a=9-c
8(9-c)=72-8c+4.5c=58
12.5c=58-72
12.5c=-14
c=-1.12
lana66690 [7]2 years ago
5 0
Hey I have posted a picture the method I use to solve simultaneous equations is change the sign and follow the new sign.
This involves changing the sign for the second equation and solving it

You might be interested in
What multiples to -52 but also adds to 24
ANTONII [103]

Answer:

-2 and 26

Step-by-step explanation:

-2*26=-52

-2+26=24

6 0
2 years ago
what is poetry 30 points! and brainly if u give an good answer like (example) : A writing that describes the way people feel BUT
inysia [295]
Poetry is a type of literature, or artistic writing, that attempts to stir a reader’s imagination or emotions.
3 0
3 years ago
For fun, if X=180 and Y=20 then what is (Y-X)x(53-33)+3,269= ???? For fun
Masja [62]

Answer:

6,469!

Step-by-step explanation:

180-20=160

53-33=20

160*20=3,200

3,269+3,200=6,469

4 0
3 years ago
Quinn has $31,700 in a savings
Masteriza [31]

Answer:

she will earn $6,657 in interest in 3 years

6 0
2 years ago
Chloe was building a Lego tower . She built it with 973 stories and with 53 blocks on each story . How many Lego blocks would sh
UNO [17]

Answer:

at least 51,569 blocks ( same as 51569)

Step-by-step explanation:

973 * 53

3 0
2 years ago
Read 2 more answers
Other questions:
  • 6=-w/8. How do I solve this equation . What is w
    14·1 answer
  • The graph of an even function contains the point (3,-5). Which point must also be on the graph of the function?
    7·1 answer
  • which of the functions have a range of real numbers greater than or equal to 1 or less than or equal to-1​
    5·1 answer
  • plane is at altitude of 3500 ft and angle of elevation from airport to plane is 29 degrees. whats the horizontal distance betwee
    6·1 answer
  • Find the difference of functions s and r shown
    13·1 answer
  • Please help! Or if someone can explain how to find the answer
    12·2 answers
  • Between 11 P.M. and 8:20 A.M.​, the water level in a swimming pool decreased by
    8·1 answer
  • 94 divided by 4552 <br><br> Show ur work
    5·2 answers
  • Which is equivalent to the expression below?
    6·1 answer
  • The diameter of Circle terminates on the circumference of the circle at​ (3,0) and (3,−7).. Write the equation of the circle in
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!