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Gelneren [198K]
2 years ago
8

Solve the equation: 39=3m-12

Mathematics
2 answers:
sladkih [1.3K]2 years ago
7 0

Answer:

m = 17

Step-by-step explanation:

add 12 on both sides then divided by sides by 3

mote1985 [20]2 years ago
3 0

Answer:

Step-by-step explanation:

M=17

Hope this helps mark me as brainiest

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8x^2+5=22x Need help learning factoring please put work so I can understand
sp2606 [1]

Answer: (2x - 5) • (4x - 1)

STEP 1 : Equation at the end of step 1

(23x2 - 22x) + 5

STEP 2 : Trying to factor by splitting the middle term

2.1 Factoring 8x2-22x+5

The first term is, 8x2 its coefficient is 8 .

The middle term is, -22x its coefficient is -22 .

The last term, "the constant", is +5

Step-1 : Multiply the coefficient of the first term by the constant 8 • 5 = 40

Step-2 : Find two factors of 40 whose sum equals the coefficient of the middle term, which is -22 .

-40 + -1 = -41

-20 + -2 = -22 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -20 and -2

8x2 - 20x - 2x - 5

Step-4 : Add up the first 2 terms, pulling out like factors :

4x • (2x-5)

Add up the last 2 terms, pulling out common factors :

1 • (2x-5)

Step-5 : Add up the four terms of step 4 :

(4x-1) • (2x-5)

Which is the desired factorization

Final result : (2x - 5) • (4x - 1)

5 0
3 years ago
Generate two equivalent fractions for each fraction. Use fraction tikes or number lines.<br> 1/3
Romashka [77]
Equivealent= like 

6/18, 5/15
3/9, 2/6 
4 0
2 years ago
Which is equivalent to 56c^16/162c^3 squared after it has been simplified completely?
Oxana [17]

Answer:

B

Step-by-step explanation:

Just took the test plz mark brainliest

4 0
3 years ago
What is the y-intercept of the quadratic function<br> f(x) = (x – 6)(x – 2)
Ugo [173]

Answer: y=12

Step-by-step explanation:

To find the y intercept, plug in all x values with 0.

f(0)=((0)-6)(0)-2)=> -6(-2)=>12

6 0
3 years ago
PLEASE HELP!!!! about solving systems!!! 30 points!!!
e-lub [12.9K]

Answer:

Step-by-step explanation:

<h2>d ) 13x−8y=28 11x−8y=24 </h2>

we can solve:

13x−8y=28

11x−8y=24

.............................(subtract side by side)

13x - 11 x + (-8y) - (-8y) = 28 - 24

2x + 0 = 4

x = 4/2 = 2 (divide both sides by 2),

then you replace x = 2 into 13x - 8y = 28, we have 26 - 8y = 28

or -8y = 28-26, or -8y = 2, then y = 2/ -8= -1/4

Solution x =2, y = - 1/4

b) 5x−2y=1 15x−3y=−3

5x−2y=1 (multiple bothe sides by 3)

15x−3y=−3

we have

15x−6y=3

15x−3y=−3

..................(  subtract side by side)

0 -3y = 6

y = 6/-3

y = -2

then you replace y =- 2 into 5x - 2y = 1, we have 5x + 4 = 1

or 5x = 1-4 or 5x = -3, then x = -3/5

Solution: x = -3/5, y = -2

c) 13x−12y=14 11x−4=18y

we have:

13x−12y=14

11x−4=18y

then:

13x−12y=14 ( multiple bothe sides by 6)

11x - 18y = 4   (multiple bothe sides by 4)

then

78x−72y=84

44x−72y= 16

...........................( subtract side by side)

34x = 68

or x = 68/34 = 2

then you replace x = 2 into 11x -4 = 18y , we have 22 -4 = 18y

or 18y = 18 or y = 18/18 = 1

Solution: x = 2 , y = 1

a) 12x−7y=2 4x−5y=6

we have

12x−7y=2

4x−5y=6  (multiple bothe sides by 3)

so

12x−7y=2

12x−15y=18

-------------------------(subtract side by side)

8y = -16

or y = -16/8 = -2

then you replace y = -2 into 4x -5y = 6 , we have 4x + 10 = 6

or 4x = 6 - 10 or 4x = - 4 and x = -4/4 = - 1

Solution: x = - 1 , y = - 2

b) 7u+2v=1 17u+6v=−9

7u+2v=1   (multiple bothe sides by 3)

17u+6v=−9

so

21u+6v=3  

17u+6v=−9

------------------(subtract side by side)

4u = 12

or u = 12/4 = 3

then you replace u = 3 into 7u +2v = 1 , we have 21 + 2v = 1

or 2v = 1 - 21 or 2v = - 20 and v = -20/2 = - 10

Solution: u = 3, v = - 10

<h2>c) 6x=25y+1 5x−16y=−4</h2>

6x=25y+1  (multiple bothe sides by 5)

5x−16y=−4  (multiple bothe sides by 6)

we have

30x=125y+5

30x = 96y−24

-------------------------(subtract side by side)

0 = 29y + 29

or 29y = - 29

then y = - 29/29 = -1

then you replace y = -1 into 6x = 25y + 1 , we have 6x = - 25 + 1

or 6x = - 24 or x = -24/6 = - 4

Solution: x= -4, y = - 1

Have a good day!

6 0
3 years ago
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