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Ainat [17]
3 years ago
13

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

Mathematics
1 answer:
asambeis [7]3 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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Samantha sends her son, Barry, to a preschool center on certain days. The cost of preschool is $45 per day along with a fixed mo
MAXImum [283]

Answer:

<h3><em>D. 880 = 45d + 70; 18 days.</em></h3>

Step-by-step explanation:

We are given fixed monthly charge = $70.

The cost of preschool per day = $45.

Number of days = d.

Total cost of d days = cost per day × number of days + fixed monthly charge.

Therefore, we get equation

880 = 45×d+70

<h3>880 = 45d +70.</h3>

Now, we need to solve the equation for d.

Subtracting 70 from both sides, we get

880-70 = 45d +70-70

810=45d

Dividing both sides by 45, we get

\frac{810}{45} =\frac{45d}{45}

18=d.

Therefore,<em> 18 days Barry attended preschool last month.</em>

<em>Therefore, correct option is D option.</em>

<h3><em>D. 880 = 45d + 70; 18 days.</em></h3>
4 0
3 years ago
At the malt shop a large chocolate shake takes 0.2 of a pint of milk. If a medium shake takes 0.7 the amount of a large, how muc
Maslowich
The answer would be 0.9 pints of shake
5 0
3 years ago
Read 2 more answers
3.5x + 0.8 = 18.24 - 5.9x​
notka56 [123]

Answer:

x=1.85531914

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The ratio of the width to the length of a painting is 3 to 7. If the painting is 42 in. long how wide is it
belka [17]

If length is 42 inches, then width is 18 inches.

Step-by-step explanation:

We are given ratio of width to the length of a painting i.e 3 to 7. If the painting is 42 inches long, then how wide it is?

Solving:

\frac{width}{length}=\frac{width}{length}\\ \frac{3}{7}=\frac{w}{42}\\  Cross\,\,multiply:\\3*42=w*7\\126=w*7\\w=\frac{126}{7}\\w=18

So, If length is 42 inches, then width is 18 inches.

Keywords: Ratio

Learn more about Ratio at:

  • brainly.com/question/9880052
  • brainly.com/question/10781917
  • brainly.com/question/2707032

#learnwithBrainly

8 0
3 years ago
X+2/x^2+2x-3/x+2/x^2-x
Sergio [31]

Answer:

2x3 - 3x + 4

 ———————

      x2  

Step-by-step explanation:

Step  1  :

                  2

Simplify   ——

                  x2

Rewriting the whole as an Equivalent Fraction :

4.1   Adding a fraction to a whole

Rewrite the whole as a fraction using  x2  as the denominator :

           x             x • x2

    x =  —  =  ——————

            1                 x2  

Let us test ....

  P    Q    P/Q    F(P/Q)     Divisor

     -1       1        -1.00        5.00    

     -1       2        -0.50        5.25    

     -2       1        -2.00        -6.00    

     -4       1        -4.00        -112.00    

     1       1        1.00        3.00    

     1       2        0.50        2.75    

     2       1        2.00        14.00    

     4       1        4.00        120.00    

Polynomial Roots Calculator found no rational roots

Final result :

 2x3 - 3x + 4

 ————————————

      x2    

Processing ends successfully

plz mark me as brainliest :)

3 0
3 years ago
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