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ZanzabumX [31]
2 years ago
13

Factorise or simplify4a² - 8ab²​

Mathematics
1 answer:
Alex73 [517]2 years ago
7 0

Answer: I think it would be 4a(a−2b squared)

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SHOW YOUR WORK!!!!!!!!!!!!!!!!!!!!
tresset_1 [31]
Old. new
100%. 45%
x. 42
45x= 4200
x=$93.33
8 0
3 years ago
In a running competition, a bronze, silver and gold medal must be given to the top three girls and top three boys. If 15 boys an
denis-greek [22]

Answer:

There are a total of possible 1820 results.

Step-by-step explanation:

Since there are two competitions, one for boys and one for girls, and we want all the possible results we will calculate the possible combinations for the boys and multiply them by the possible combinations for the girls. This is shown below:

Boys = \frac{15!}{3!(15 - 3)!} = \frac{15!}{3!12!} = \frac{15*14*13*12!}{3!12!}\\Boys = \frac{15*14*13}{3*2*1}\\Boys = \frac{15*14*13}{3*2*1}\\Boys = 455

Girls = \frac{4!}{3!*(4 - 3)!}\\Girls = \frac{4*3!}{3!}\\Girls = 4

Total number of possible results:

results = 4*455\\results = 1820

3 0
3 years ago
What is 2 1/6 - 3 4/9?
vodomira [7]
To solve the question, first factorize both fraction,which makes:

2 1/6 - 3 4/9
= 2/6 - 12/9
= 1/3-4/3
= -3/3
= -1

Hope ot helps!
8 0
3 years ago
Simplify: 0.9(2b-1)-0.5b+1
Nutka1998 [239]

Answer:

Step-by-step explanation:

0.9*2b = 1.8b

0.9*-1 = -0.9

So far we have 1.8b-0.9. It can't be simplified further.

Then, we add the 2nd part, -0.5b+1.

We have:

1.8b-0.9-0.5b+1. Next we combine like terms.

1.8b-0.5b = 1.3b.

-0.9+1 = 0.1

Then we put it together.

1.3b+0.1 is our answer.

Hope this helped! Have a nice day :D

5 0
2 years ago
Read 2 more answers
There are 120 bricks in a box
Mila [183]
1/2 * 60 = 30 Red

1/4 * 60 = 15 Blue

60 - (30 + 15) = 15 Green


6 0
3 years ago
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