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3 years ago

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

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Answer:

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

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>

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3 years ago

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The answer would be 0.9 pints of shake

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3 years ago

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3.5x + 0.8 = 18.24 - 5.9x

notka56 [123]

Answer:

x=1.85531914

Step-by-step explanation:

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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:

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3 years ago

X+2/x^2+2x-3/x+2/x^2-x

Sergio [31]

Answer:

2x3 - 3x + 4

———————

Step-by-step explanation:

Step 1 :

Simplify ——

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

————————————

Processing ends successfully

plz mark me as brainliest :)

3 0

3 years ago