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3 years ago

Plzzzzzzzzzzz answer this y^2+4x=0 2x+y=4

1 answer:

4 0

Y^2 + 4x = 0
y=4 - 2x

then substitute the given value of y into the equation y^2 + 4x = 0

(4 - 2x) ^2 +4x = 0

then solve for x

but there are no real values so your answer is x∉ R

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The area of a rectangular field is 7050m^2. If the width of the field is 75m, what is its length?

sweet [91]

Answer:

Step-by-step explanation: Area =length × width

7050m^2 = X× 75m

7050 =75X

Divide both sides by 75

7050÷75 =75÷75

74m= X

3 0

2 years ago

What's the difference between (-3)^2 and -3^2

erastova [34]

(-3)^2 = 9
-3^2 = -9
Hope this helps!

8 0

3 years ago

Read 2 more answers

Solve the system of equations.<br> – 3y + 5x = 26<br> - 2 - 5x = -16

mylen [45]

Answer:

$y=-4,\:x=\frac{14}{5}$

Step-by-step explanation:

$\begin{bmatrix}-3y+5x=26\\ -2-5x=-16\end{bmatrix}$

Isolate x for -2-5x=-16:

$x=\frac{14}{5}$

$\mathrm{Substitute\:}x=\frac{14}{5}$

$\begin{bmatrix}-3y+5\cdot \frac{14}{5}=26\end{bmatrix}$

$Simplify$

$\begin{bmatrix}-3y+14=26\end{bmatrix}$

Isolate y for -3y+14=26:

$y=-4$

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$y=-4,\:x=\frac{14}{5}$

7 0

2 years ago

Is this figure an example of a line

ivann1987 [24]

Answer:

No , It has two endpoints.

Explanation: A line segment has two end points with a definite length.

A straight line has neither starting nor end point and is of infinite length.

5 0

3 years ago

Read 2 more answers

The number of tree species s in a given area a in the pasoh forest reserve in malaysia has been modeled by the power function s(

jolli1 [7]

$s(a) = 0.882 a^{0.842}$

s'(107) means the value of derivative of s(a) at a = 107. So, first step is to find the derivative of s(a).

$s(a) = 0.882 a^{0.842}$
Taking derivative of both sides, we get:
$\frac{d}{da}(s(a))= \frac{d}{da}( 0.882 a^{0.842})$

Taking the common out from right hand side of the equation:
$s'(a)= 0.882\frac{d}{da}(a^{0.842})$

Applying the power rule of derivative:

$s'(a) = 0.882 ( 0.842 a^{(0.842-1)}) \\ s'(a) = 0.742644 a^{-0.158}$

Now we can substitute 107 in place of a to get s'(107):
$s'(107) = 0.742644( 107)^{-0.158} \\ s'(107)= 0.35494$

Thus the value of s'(107) rounded to 5 decimal places is 0.35494

3 0

3 years ago