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Ainat [17]
2 years ago
13

2xa(-4xb - 2x 3 + 5x)

Mathematics
1 answer:
asambeis [7]2 years ago
4 0

Answer:

-2x2a • (2x2 + 4b - 5)

Step-by-step explanation:

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 2xa • ((-4xb -  2x3) +  5x)

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  -2x3 - 4xb + 5x  =   -x • (2x2 + 4b - 5)  

Trying to factor a multi variable polynomial :

3.2    Factoring    2x2 + 4b - 5  

Try to factor this multi-variable trinomial using trial and error  

Factorization fails

Multiplying exponential expressions :

3.3    x1 multiplied by x1 = x(1 + 1) = x2

Final result :

 -2x2a • (2x2 + 4b - 5)

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Distributive property​
timama [110]

Answer:

9 x 6=  9 x ( 3+3 )

= 9 x 3 + 9 x 3

= 27 + 27

= 54

Step-by-step explanation:

3 0
1 year ago
When using bits to represent fractions of a number, can you create all possible fractions?.
mafiozo [28]

Every rational number has a base-2 representation, but only the ones with denominators that are powers of 2 will require a finite number of bits to fully represent it.

For example,

\dfrac12 = 1\cdot2^{-1} = 0.1_2

\dfrac14 = 1\cdot2^{-2} = 0.01_2

\dfrac34 = \dfrac12 + \dfrac14 = 0.11_2

\dfrac{1023}{1024} = 1 - \dfrac1{2^{10}} = 1_2 - 0.0000000001_2 = 0.1111111111_2

whereas a number whose denominator contains anything else like 1/3 will need an infinite number of bits to represent it exactly.

\dfrac13 = \dfrac1{2^2} + \dfrac1{12} = \dfrac1{2^2} + \dfrac1{2^4} + \dfrac1{48} = \dfrac1{2^2} + \dfrac1{2^4} + \dfrac1{2^8} + \dfrac1{192}

and so on, so that it has a repeating but non-terminating base-2 representation

\dfrac13 = 0.010101\ldots_2

5 0
1 year ago
the area of a circle is 81 pi m^2. what is the circumference, in meters? express your answer in terms of pi.
mestny [16]
<h3>Answer:    18pi</h3>

============================================================

Explanation:

The area 81pi square meters leads to the radius 9 meters

Use the formula A = pi*r^2 to see why this is the case. You plug in A = 81pi and solve for r to get r = 9.

-----------------

Once you know the radius, you can determine the circumference C

C = 2*pi*r

C = 2*pi*9

C = 2*9*pi

C = 18pi

The circumference is the perimeter, or distance, around the circle.

8 0
3 years ago
Find the slope of the line.<br><br> O -5<br> O -1<br> O 1<br> O None of the above
Kipish [7]

Answer:

what line? I don't see a picture.

5 0
2 years ago
There are 16 pieces of fruit in a basket, including 2 nectarines. What is the probability that a randomly selected piece of frui
aleksklad [387]

Answer:

The probability is 1/8

Step-by-step explanation:

We have 2 nectarines in a total of 16 pieces of fruit in a basket, so the probability of random selected piece of fruit being a nectarine is the number of nectarines over the total number of pieces of fruit:

Probability = Number of nectarines / Total pieces = 2 / 16

To find the fraction in the simplest form, we divide the numerator and denominator by 2:

Probability = (2/2) / (16/2) = 1/8

3 0
3 years ago
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