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4 years ago

Factorise the following expression 12x²-27y²

Mathematics

2 answers:

sveticcg [70]4 years ago

4 0

Answer:3(4x^2-9y^2)

Step-by-step explanation:

Anestetic [448]4 years ago

4 0

Answer:

3 (4x^2 - 9y^2)

Step-by-step explanation:

12x^2 basically means 12xx

27y^2 basically means 27yy

Find the common factor between 12 and 27. The answer is 3

Check to see if the numbers have anything common between such as the letters. They don't.

What do you times by to get from 3 to 12x^2 (4x^2)

What do you times by to get from 3 to - 27y^2

(-9y^2)

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Which property is shown in this example?

SpyIntel [72]

Answer: B. Commutative Property

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3 years ago

what is the probability of choosing a green marble from a jar containing five red, 6 green, and four blue marbles

slega [8]

Answer:

6/15

Step-by-step explanation:

add all the marbles up and you get 15

6 green ones out of 15 marbles

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3 years ago

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Joshua uses a rule to write the following sequence of numbers 1/6,1/2,5/6,----------,11/2 What rule did Joshua use? What is the

Pani-rosa [81]

Answer: The missing number in the sequence is $\frac{7}{6}$

Step-by-step explanation:

Since we have given that

$\frac{1}{6},\frac{1}{2},\frac{5}{6},----------,\frac{11}{2}$

First term = a= $\frac{1}{6}$

Common difference = d is given by

$d=a_2-a_1\\\\\frac{1}{2}-\frac{1}{6}\\\\=\frac{6-2}{12}\\\\=\frac{4}{12}=\frac{1}{3}\\\\Similarly,\\d=a_3-a_2\\\\=\frac{5}{6}-\frac{1}{2}\\\\=\frac{10-6}{12}\\\\=\frac{4}{12}\\\\=\frac{1}{3}$

Therefore, it forms an arithmetic sequence.

Since, $a_4$ is missing,

So,

$a_4=a+3d\\\\a_4=\frac{1}{6}+3\times \frac{1}{3}\\\\a_4=\frac{1}{6}+1\\\\a_4=\frac{1+6}{6}\\\\a_4=\frac{7}{6}$

Hence, the missing number in the sequence is $\frac{7}{6}$

4 0

3 years ago

Read 2 more answers

Could someone help here, thankyou!

ludmilkaskok [199]

Answer:

x = 6 cm

Step-by-step explanation:

Given ratio of sides of similar figures = a : b , then

ratio of areas = a² : b²

Here ratio of areas = 5 : 45 = 1 : 9 , so

ratio of sides = $\sqrt{1}$ : $\sqrt{9}$ = 1 : 3

Thus side of B is 3 times side of A

x = 3 × 2 = 6 cm

3 0

3 years ago

Need help ! explain how you got the answer too pls:)

Likurg_2 [28]

Answer:

the answer is D

Step-by-step

14ab^3/7a^-2b^-1

= 14a^3b^4/7

=2a^3b^4

7 0

3 years ago