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Kisachek [45]
2 years ago
5

Plz help me It algebra

Mathematics
1 answer:
Roman55 [17]2 years ago
8 0
The answer is x = z/w - c/w
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Find the x and y intercepts of y = 2x^3 - 4x^2 algebraically
poizon [28]

The x-intercept is the place where y = 0 and the y-intercept is the point where x = 0. Using this information, we can substitute 0 in for x and y to find the intercepts.


x-intercepts (where y = 0):

2x^3 - 4x^2 = 0

x^2(2x - 4) = 0

Here we can apply the Zero Product Property to find x^2 = 0 and 2x - 4 = 0 separately.

x^2 = 0

x = 0

AND

2x - 4 = 0

2x = 4

x = 2

The x-intercepts are located at (0, 0) and (2, 0).


y-intercept (where x = 0):

y = 2(0)^3 - 4(0)^2

y = 0

The y-intercept is located at (0, 0).

6 0
3 years ago
3) x2+ y2 - x + 3y - 42 = 0<br> X+y=4
REY [17]

The solution is (-1,5) and (7,-3)

Step-by-step explanation:

The expression is x^{2} +y^{2} -x+3y-42=0 and x+y=4

Using substitution method we can solve the expression.

Let us substitute x=4-y in x^{2} +y^{2} -x+3y-42=0

(4-y)^{2} +y^{2} -(4-y)+3y-42=0

Expanding and simplifying the expression, we get,

\begin{array}{r}{16-8 y+y^{2}+y^{2}-4+y+3 y-42=0} \\{2 y^{2}-4 y-30=0}\end{array}

Let us use the quadratic equation formula to solve this equation,

\begin{aligned}y &=\frac{4 \pm \sqrt{16-4(2)(-30)}}{2(2)} \\&=\frac{4 \pm \sqrt{16+240}}{4} \\&=\frac{4 \pm 16}{4} \\y &=1 \pm 4\end{aligned}

Thus, y=5 and y=-3

Substituting y-values in the equation x+y=4, we get the value of x.

For y=5 ⇒ x=4-5=-1

For y=-3 ⇒ x=4+3=7

Thus, the solution set is (-1,5) and (7,-3)

7 0
3 years ago
What is 5x-2y= -4 in slope intercept form
Strike441 [17]

Answer:

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Gabriela is 4 times as old as Vanessa. 10 years ago, Gabriela was 9 times as old as Vanessa. How old is Vanessa now?
Rus_ich [418]
Vanessa is 16. When she was 6, he was 54, ten years later he's 64 and she's now 16.
5 0
3 years ago
–243 = -9(10 + w)<br><br> please help me
Verdich [7]

Answer:

w=17

Step-by-step explanation:

-243=-9(10+w)

-243=-90-9w

+90    +90

-153=-9w

17=w

hope this helps :)

8 0
3 years ago
Read 2 more answers
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