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
Alborosie
3 years ago
12

Use this system of linear equations to solve for x. 3x+5y=6 and 2x+y=4​

Mathematics
2 answers:
Oduvanchick [21]3 years ago
8 0

Answer:

x=2

HPT 3x+5y=6 (1) và 2x+y=4 (2)

Nhân phương trình (2) với 5 để hệ số y của 2 phương trình bằng nhau. Ta có:

(2)⇔ 10x+5y=20(3)

Trừ (3) cho (1), có: 7x+0y=14⇒x=2

svp [43]3 years ago
4 0

Answer:

3x+5y=6.....eqn 1

2x+y=4.......eqn 2

y=4-2x.....eqn 3

Step-by-step explanation:

substitute eqn 3 into eqn 1

3x+5(4-2x)=6

3x+20-10x=6

-7x = -14

x=2

You might be interested in
27. Dylan bought 3 identical shirts online for a total cost of $71.83 including a flat rate of $7.99 for shipping. Write
Sav [38]

Answer:

71.83

Step-by-step explanation:

3 0
2 years ago
Jim ran 12 1/2 miles in 2 1/2 hours. How many hours for 1 mile?
Klio2033 [76]

Answer:

1/5 hours i.e 0.2 hours (which is 12 mins)

Step-by-step explanation:

First note that 12 1/2 = 12.5, and 2 1/2 = 2.5.

To work out how many hours it takes hime to drive one mile, we divide the number of hours (2.5) by the number of miles (12.5),

i.e 2.5 ÷ 12.5

which equals 1/5 = 0.2 hours (= 12 mins).

4 0
3 years ago
You can mow one acre in 126 minutes. i can mow one acre in 117 minutes. how long will it take you to mow a 0.17-acre lawn? 13 in
Morgarella [4.7K]

a) (0.17 ac)×(126 min/ac) = 21.42 min

b) I can mow 1/126 ac/min; you can mow 1/117 ac/min. Together, we can mow at a rate that is the sum of these:

... (1/126 + 1/117) ac/min = (117 + 126)/(126×117) = 243/14,742 ac/min

Then it will take 14,742/243 min/ac × 0.17 ac/lawn ≈ 10.31 min/lawn

5 0
3 years ago
What is the correct factored form of x^2+3x-10
GarryVolchara [31]

Answer:

(x-2)(x+5)

Step-by-step explanation:

I have answered ur question

4 0
3 years ago
Read 2 more answers
Can someone please answer this !?!!
snow_tiger [21]

Answer:

midpoint is the answer.....

4 0
3 years ago
Read 2 more answers
Other questions:
  • Last weekend, 5% of the tickets sold at seaworld were discount tickets. If seaworld sold 60 tickets in all, how many dicount tic
    7·1 answer
  • The school Athletic banquet can spend at most $500 for the awards dinner, If the restaurant charges $50 set up fee plus $20 per
    14·2 answers
  • A number, n, is added to 15 less than 3 times itself. The result is 101. Which of the following can be an equation can be used t
    14·1 answer
  • HELP ASAP
    11·1 answer
  • You and your friend each purchased identical subscriptions to an online video rental site. When you joined, you each paid the on
    10·1 answer
  • In the diagram below DE and EF are tangent to O what is the measure of DF​
    13·2 answers
  • The marked price of a sweater at the clothing store was $24.
    10·1 answer
  • Rewrite the inequality into slope Intercept form. <br> 6x-2y&gt;-2<br> PLEASE PLEASE PLEASE HELP!!!
    5·2 answers
  • ASAP<br> WILL MARK BRIANLIST
    10·1 answer
  • GUYS I SWEARRR I NEED HELP PLS IM BEGGING IMA FAIL MA TEST
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!