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3 years ago

Which expression is NOT equal to 28?

Mathematics

2 answers:

Temka [501]3 years ago

5 0

Answer:

aaaaa

Step-by-step explanation:

Mumz [18]3 years ago

5 0

Answer:

I think it’s A

Step-by-step explanation:

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Need answer fast with all the steps included please

marysya [2.9K]

Answer:

$(\frac{6x^2y}{5})$

Step-by-step explanation:

Given

$\frac{(2x)(3x^3y^2)}{5x^2y}$

Required

Solve

Open the brackets

$\frac{(2x)(3x^3y^2)}{5x^2y}$ = $\frac{(2x*3x^3y^2)}{5x^2y}$

$\frac{(2x)(3x^3y^2)}{5x^2y}$ = $\frac{(6x^4y^2)}{5x^2y}$

Apply law of indices:

$\frac{(2x)(3x^3y^2)}{5x^2y}$ = $\frac{(6x^{4-2}y^{2-1})}{5}$

$\frac{(2x)(3x^3y^2)}{5x^2y}$ = $\frac{(6x^2y)}{5}$

$\frac{(2x)(3x^3y^2)}{5x^2y}$ = $(\frac{6x^2y}{5})$

6 0

3 years ago

Serial numbers for a product are to be made using 3 letters followed by 3 digits. The letters are to be taken from the first 5 l

Bezzdna [24]

Answer:

43,200 serial numbers can be generated

Step-by-step explanation:

The ordering for the letters and the digits are important. For example, 012 constitutes a different serial number than 210. So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

How many serial numbers can be generated

3 letters, from the first five of the alphabet

3 digits, from a set of 10

$T = P_{5,3}*P_{10,3} = \frac{5!}{(5-3)!}*\frac{10!}{(10-3)!} = 43200$

43,200 serial numbers can be generated

8 0

3 years ago

The perimeter of rectangle field is 160m than find the area of field if its breath is 20m

Sergio039 [100]

Answer:

3200

Step-by-step explanation:

area= (l*b)

area=(160*20)

area=3200

6 0

3 years ago

Simplify this rational expression. 2x^2+5x+3/2x^2-x-3

Murljashka [212]

Answer:

$2x+3$ / $2x-3$

Step-by-step explanation:

firstly we make two steps to simplify this question.

1st step: simplify $2x^{2} +5x+3$

to simplify this we use factorization

$2x^{2} +2x+3x+3$

$2x(x+1) +3(x+1)$

$(2x+3) (x+1)$ .....(1)

2nd step:simplify $2x^{2} -x-3$

$2x^{2} +2x-3x-3$

$2x(x+1)-3(x+1)$

$(2x-3)(x+1)$ .....(2)

now dividing (1) and (2), we get the answer

$2x+3/2x-3$

5 0

3 years ago

A linear function contains the following point

Vsevolod [243]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers