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
Yuliya22 [10]
2 years ago
12

Solve this linear equation. Show all workings

Mathematics
2 answers:
user100 [1]2 years ago
5 0

~~~~~~3x^2 +2x -1 = 0\\\\\implies 3x^2 +3x -x -1 = 0\\\\\implies 3x(x+1) - (x+1)=0\\\\\implies (x+1)(3x-1) = 0\\\\\implies x = -1,~~ x = \dfrac 13

Sever21 [200]2 years ago
3 0

Step-by-step explanation:

3x²-3x+x-1=0

3x(x - 1) + 1(x - 1) = 0

(x - 1)(3x + 1) = 0

Either x - 1- = 0, then x = 1

or 3x + 1 = 0, then x = -1 3

x = 1 or -1 3

You might be interested in
I'll give brainliest if correct
kvv77 [185]

Answer:

Go down to -4 and make a 1/1 graph

Step-by-step explanation:

3 0
3 years ago
What is the slope of the linear function represented in<br> the table?
boyakko [2]

Answer: 1/7

Step-by-step explanation: The points create a posotive line so the answer has to be posotive. You then have to look at the rise over run. (0,1) is 1 unit higher than (-7,0) and the run is the ditance between the 2 x exvalues. 7. Rise/run = 1/7

6 0
2 years ago
Quadrilateral ABCD has vertices A(1, -3) , B(2, 1), C(6, 3), and D(7, -1). Prove or disprove that the Quad ABCD is a rectangle.
zavuch27 [327]
If AC=BD, than Quad ABCD is a rectangle
AC
√(3+3)²+(6-1)²
√6²+5²
√36+25
√61
BD
√(1+1)²+(2-7)²
√2²+(-5)²
√4+25
√29
Quad ABCD is not a rectangle because √61 and √29 are not equal.
7 0
3 years ago
3. A postal carrier can
Delicious77 [7]

Answer:

6 hours. ( I DID IT USING PROPORTIONS!)

Step-by-step explanation:

houses/hours

130/2.5= 312/x

(cross multiply)

130x = 780

130x/130 = 780/ 130 (divide each by 130)

6 = h

7 0
3 years ago
Read 2 more answers
ACCTUALLY HELP ME??!!!!!!! NEEDED FOR TOMORROW AND 50 POINTS! will award brainliest for first answer!!
drek231 [11]

Answer:

a:c = 35:24

a:c = 20:27

a:c = 35:22

a:c = 28:27

Step-by-step explanation:

a:b = 7:3

Using cross products

3a = 7b

Divide by 7

3a/7 = b

Now we want

8b = 5c

Substitute in 3a/7 for b

8 (3a/7) = 5c

24/7a = 5c

Multiply by 7

24/7a *7 = 5*7c

24a = 35c

Divide by c

24 a/c = 35

Divide by 24

a/c = 35/24

a:c = 35:24

a:b = 4:9

Using cross products

9a = 4b

Divide by 4

9a/4 = b

Now we want

3b = 5c

Substitute in 9a/4 for b

3 (9a/4) = 5c

27/4a = 5c

Multiply by 4

27/4a *4 = 5*4c

27a = 20c

Divide by c

27 a/c = 20

Divide by 27

a/c = 20/27

a:c = 20:27

b:c = 5:11

Using cross products

11b = 5c

Divide by 11

b = 5c/11

Now we want

2a = 7b

Substitute in 5c/11 for b

2a = 7(5c/11)

2a = 35c/11

Multiply by 11

2a*11 = 35c

22a = 35c

Divide by c

22 a/c = 35

Divide by 22

a/c = 35/22

a:c = 35:22

b:c = 14:3

Using cross products

3b = 14c

Divide by 3

b = 14c/3

Now we want

9a = 2b

Substitute in 14c/3 for b

9a = 2(14c/3)

9a = 28c/3

Multiply by 3

9a*3 = 28c

27a = 28c

Divide by c

27 a/c = 28

Divide by 27

a/c = 28/27

a:c = 28:27

7 0
3 years ago
Other questions:
  • I ONLY GOT ONE SHOT!! PLEASE HELP, IT'S KIDA EASY IG, IM JUST DUMB.. WILL GIVE BRAINLIEST AND VOTE!! AT LEAST LOOK
    15·1 answer
  • If i sale 120 tickets at $25 each how much money will be made
    13·2 answers
  • -3(3w-4) =-20 <br> w= ?<br> Plssss help
    12·1 answer
  • Gina is buying juice for a class breakfast at school.At the discount store,she can purchase 30 individual juice boxes for $21.99
    5·1 answer
  • Describing part to part realationship
    9·1 answer
  • Please help will give brainliest
    15·2 answers
  • The height of a triangle is 6 m more than its base. The area of the triangle is 56 m?. What is the length of the base? Enter you
    10·1 answer
  • Which expression is equivalent to 4+5i•(2-7i)?
    12·1 answer
  • PLEASE HELP THIS IS DUE ASAP!!!!!!!!!!!!!!
    9·1 answer
  • Discretionary expenses are___ and ___ be reduced to help save money. For example, a _____________ is a discretionary expense.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!