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Ahat [919]
3 years ago
12

Factorise 2a + 6 ?I literally forgot how to factorise

Mathematics
2 answers:
fenix001 [56]3 years ago
8 0
You need to find a factor  of 2a and 6 - what number divides into both of these?  Its 2. 
so Dividing 2 into  2a + 6 gives you the other factor in the parentheses:-

Answer is 2(a + 3)
TEA [102]3 years ago
6 0
2a  + 6

2a + 2·3

2(a+3)
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The perimeter of a rectangular field is 360yd. The length is 20yd longer than the width. Find the dimensions
Tju [1.3M]
If P=360, then 360yd / 4 sides = 90yds each side. Now that it is a rectangle, the Length should be more than the width, so if the length is 20yds more than the width, do 90 - 20 two times,  Width= [ (90yds - 20yds)*2 ] 

To sum things up, Length = 110; Width = 70. | 110*2 = 220, 70 * 2 = 140, 220+140 = 360.
5 0
3 years ago
Read 2 more answers
Solve for b.<br> b +3(3 - 2b) = 1 - 2(b + 1)
Vika [28.1K]

Answer:

b+3(3-2b)=1-2(b+1)  

One solution was found :

                  b = 10/3 = 3.333

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

               b+3*(3-2*b)-(1-2*(b+1))=0  

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 (b+(3•(3-2b)))-(1-2•(b+1))  = 0  

Step  2  :

Equation at the end of step  2  :

 (b +  3 • (3 - 2b)) -  (-2b - 1)  = 0  

Step  3  :

Equation at the end of step  3  :

 10 - 3b  = 0  

Step  4  :

Solving a Single Variable Equation :

4.1      Solve  :    -3b+10 = 0  

Subtract  10  from both sides of the equation :  

                     -3b = -10

Multiply both sides of the equation by (-1) :  3b = 10

Divide both sides of the equation by 3:

                    b = 10/3 = 3.333

One solution was found :

                  b = 10/3 = 3.333

Step-by-step explanation:

7 0
3 years ago
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Tcecarenko [31]
N • 3 + 7 = 25
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I hope this helps
7 0
3 years ago
Write an expression for the
klio [65]

Answer:

8/2 - 20/5

Step-by-step explanation:

please mark brainliest.

8 0
3 years ago
⛅️ + ⛅️+ ⛅️= 30<br> ⛅️ + ❄️+ ❄️= 20<br> ❄️ + + = 13<br> ⛅️+ ❄️ x = ??
Alexxx [7]
⛅️ = 10
❄️= 5
Unfortunately that’s all I can offer because I don’t understand what the + + and ❄️ x means
4 0
4 years ago
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