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3 years ago

( -8x + 3x 4 ) - ( -7x - 6x 4 )

Mathematics

2 answers:

lyudmila [28]3 years ago

8 0

Answer:

9x^4 -x

Step-by-step explanation:

( -8x + 3x^4 ) - ( -7x - 6x^4 )

Distribute the minus sign

( -8x + 3x^4 ) +7x + 6x^4

Combine like terms

3x^4 + 6x^4 -8x +7x

9x^4 -x

alexgriva [62]3 years ago

5 0

Answer:

x + 9x^4

Step-by-step explanation:

There is some confusion here. You likely meant by "3x 4" the power term 3x^4 and by "6x 4" the power term 6x^4. " ^ " indicates exponentiation.

Step 1: Eliminate the parentheses. Simply drop them from the first term.

The first term becomes -8x + 3x^4 and the second term becomes 7x + 6x^4.

Now combine like terms:

-8x + 3x^4

+ 7x + 6x^4

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

x + 9x^4

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Solve for x.<br> 2.8 3.2x + 1 = 16.6

Yuliya22 [10]

Answer:

$\sf x = \dfrac{15.6-2.8a}{3.2}$

Step-by-step explanation:

Solve for 'x'.

To solve for 'x', isolate 'x'.

2.8a + 3.2x + 1 = 16.6

Subtract 1 from both sides. {Subtraction property of equality}

2.8a + 3.2x = 16.6 - 1

2.8a + 3.2x = 15.6

Subtract 2.8 a from both sides.

3.2x = 15.6 - 2.8a

Now, divide both sides by 3.2. {Division property of equality}

$\sf \dfrac{3.2x}{3.2}=\dfrac{15.6-2.8a}{3.2}\\\\\boxed{x=\dfrac{15.6-2.8a}{3.2}}$

6 0

2 years ago

Write an equation in intercept form of the parabola that passes through the point (3,40) and has x-intercepts −5 and 4.

Maru [420]

The equation of this parabola will have the form f(x) = a(x+5)(x-4), which works out to f(x) = a(x^2 + x - 20). Since the parabola passes thru (3,40),

40 = a(3^2 + 3 - 20), or 40 = a(-8), so a = -5.

Thus, the equation of this parabola is y = -5(x^2 + x - 20).

5 0

3 years ago

HELP ASAP SHOW WORK TOO!!! THANKS

lukranit [14]

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