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3 years ago

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20%2B%208%20is%20x-a%20then%20the%20value%20of%20a%20is%3F%5C%5C" id="TexFormula1" title="If one factor of the expression x^{4} - ax^{3} + 5x - a + 8 is x-a then the value of a is?\\" alt="If one factor of the expression x^{4} - ax^{3} + 5x - a + 8 is x-a then the value of a is?\\" align="absmiddle" class="latex-formula">

1 answer:

meriva3 years ago

6 0

I cant see the whole quwstions

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Katalin drove 210 miles on her vacation. She drove an average of 1.4 times faster on the second 105 miles of her trip than she d

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3 years ago

Find all solutions of the given system of equations (If the system is infinite many solution, express your answer in terms of x)

lisov135 [29]

Answer:

(a) The system of the equations $\left \{ {2x-3y\:=3} \atop {4x-6y\:=3}} \right.$ has no solution.

(b) The system of the equations $\left \{ {4x-6y\:=10} \atop {16x-24y\:=40}} \right.$ has many solutions $y=\frac{2x}{3}-\frac{5}{3}$

Step-by-step explanation:

(a) To find the solutions of the following system of equations $\left \{ {2x-3y\:=3} \atop {4x-6y\:=3}} \right.$ you must:

Multiply $2x-3y=3$ by 2:

$\begin{bmatrix}4x-6y=6\\ 4x-6y=3\end{bmatrix}$

Subtract the equations

$4x-6y=3\\-\\4x-6y=6\\------\\0=-3$

0 = -3 is false, therefore the system of the equations has no solution.

(b) To find the solutions of the system $\left \{ {4x-6y\:=10} \atop {16x-24y\:=40}} \right.$ you must:

Isolate x for $4x-6y=10$

$x=\frac{5+3y}{2}$

Substitute $x=\frac{5+3y}{2}$ into the second equation

$16\cdot \frac{5+3y}{2}-24y=40\\8\left(3y+5\right)-24y=40\\24y+40-24y=40\\40=40$

The system has many solutions.

Isolate y for $4x-6y=10$

$y=\frac{2x}{3}-\frac{5}{3}$

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2 years ago

Equation: y = 6x<br> When x = 8.<br> What is y?

aivan3 [116]

Answer:

48

Step-by-step explanation:

y=6x

y=6(8)=48

4 0

2 years ago

Read 2 more answers