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3 years ago

What is the answer to factorise 3D+12

1 answer:

5 0

Well it should be like this tell me if im wrong, ↓

3D + 12
___ ___

3 3

so, hypo thinking once 3 is divided should leave you with . ↓

D = 4 cause once you do all the cancellations it basically leads 2 D then you have to divide →→ 12/3 → 3·4 or 4·3 either way it equals 12 sooo just do the math and you will come up with ...............................↓

-Hope this helped you any if not so comment right answer D=4 :)

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4x - 2y = -2 6x + 3y = 27

JulijaS [17]

Answer:

Step-by-step explanation:

4x - 2y = -2 ------------------(I)

6x + 3y = 27 ------------------(II)

Multiply (I) by 3 & multiply (II) by 2

(I)*3 12x - 6y = -6

(II)*2 12x + 6y = 54 { Now add & y will be eliminated}

24x = 48

x = 48/24

x = 2

Plugin the value of x in equation (I)

4*2 - 2y = - 2

8 - 2y = -2 {subtract 8 from both side}

-2y = -2 - 8

-2y = -10 {Divide both sides by -2}

y = -10/-2

y = 5

6 0

3 years ago

The inequality 3x+2>x+8 is equivalent to 1.x>-3/2 2.x>3/2 3.x>3 4.x<3

natita [175]

Start with 3x+2>x+8.
Subtract x from both sides, obtaining: 2x + 2 > 8.
Subtract 2 from both sides, obtaining: 2x > 6
Divide both terms by 2: x > 3 (answer)

5 0

3 years ago

Raina is saving money to buy a game. The game costs $20, and so far she has saved four-fifths of this cost. How much money has R

Tanzania [10]

Answer:

$16

Step-by-step explanation:

8 0

4 years ago

What is the answer for 2(3a-12)=3(2a-8)

Setler [38]

Answer:

6a-24=6a-24

Step-by-step explanation:

you distribute the 2 on the first equation (2(3a-12)) so 2 times 3a is 6a and -12 times 2 equals -24 so the simple form for the first equation is 6a-24. You do the same for the second equation 3 times 2a is 6a and 3 times -8 is -24. So the equations are the same on each side meaning they have infinite solutions on a graph.

8 0

3 years ago

Venetta buys 2 pounds of pistachios and 3 pounds of almonds. The pistachios cost $4 more per pound than the almonds. She pays a

viktelen [127]

Answer:

A. One pound of pistachios plus 1 pound of almonds cost $20

C. Reducing the number of pounds of almonds by 1 results in a total cost of $40.

E. The cost p, in dollars, of 1 pound of pistachios is modeled by 2p + 3(p – 4) = 48.

Step-by-step explanation:

Let

x ----> the cost of one pound pistachios

y ----> the cost of one pound of almonds

we know that

x=y+4 -----> equation A

2x+3y=48 -----> equation B

substitute equation A in equation B and solve for y

2(y+4)+3y=48

2y+8+3y=48

5y=48-8

y=8

Find the value of x

x=8+4 =12

therefore

The cost of one pound pistachios is $12 and the cost of one pound of almonds is $8

Verify all statements

case A) One pound of pistachios plus 1 pound of almonds cost $20.

Is True

x+y=$12+$8=$20

case B) The pistachios cost twice as much per pound as the almonds

Is false

Because

2y=2(8)=$16

$16≠$12

case C) Reducing the number of pounds of almonds by 1 results in a total cost of $40

Is True

Because

2x+2y=2(12)+2(8)=$40

case D) The cost a, in dollars, of 1 pound of almonds is modeled by 2(a – 4) + 3a = 48.

Is false

The equation will be

2(a + 4) + 3a = 48.

case E) The cost p, in dollars, of 1 pound of pistachios is modeled by 2p + 3(p – 4) = 48

Is true

Because

p=a+4

Solve for a

a=p-4

8 0

3 years ago