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2 years ago

How many solutions does s^2 -35=-35 have

Mathematics

2 answers:

oksian1 [2.3K]2 years ago

5 0

Answer:

one solution since 0 has no positive or negative.

Step-by-step explanation:

s² - 35 = -35

s² = 0

s = 0

ONE answer

Alexandra [31]2 years ago

4 0

Answer:

1 solution

Step-by-step explanation:

s² - 35 = -35

Add 35 to both sides: s² = 0

s can only be 0, and 0 has no positives nor negatives, so one number.

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3x+y=15 5x-4y=8 resolucion de sistema por el metodo de sustitucion

Brrunno [24]

Answer:

x=4

y=3

Step-by-step explanation:

we have the following equations

3x+y=15 equation 1

5x-4y=8 equation 2

using equation 1 we have:

y=15-3x equation 3

using equation 3 in equation 2 we have:

5x-4(15-3x)=8

5x-4*15+4*3x =8

5x-60+12x = 8

17x=68

x=68/17

so we have x=4

finally in equation 3:

y = 15-3(4)

y = 15-12

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Answer:

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Step-by-step explanation:

Since the coefficient of $x^{2}$ is a positive number +8, then it is a parabola that opens upward

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2 years ago

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Kamila [148]

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Find the value of k so that 48x-ky=11 and (k+2)x+16y=-19 are perpendicular lines.

Rufina [12.5K]

Answer: k = -1 +/- √769

Step-by-step explanation:

48x - ky = 11

-48x -48x

-ky = -48x + 11

$\frac{-ky}{-k} = \frac{-48x}{-k} + \frac{11}{-k}$

$y =\frac{48x}{k} - \frac{11}{k}$

Slope: $\frac{48}{k}$

*************************************************************************

(k + 2)x + 16y = -19

- (k + 2)x -(k + 2)x

16y = -(k + 2)x - 19

$\frac{16y}{16} = -\frac{(k + 2)x}{16} - \frac{19}{16}$

$y = -\frac{(k + 2)x}{16} - \frac{19}{16}$

Slope: $-\frac{(k + 2)}{16}$

**********************************************************************************

$\frac{48}{k}$ and $-\frac{(k + 2)}{16}$ are perpendicular so they have opposite signs and are reciprocals of each other. When multiplied by its reciprocal, their product equals -1.

$-\frac{(k + 2)}{16}$ * $\frac{k}{48}$ = -1

$\frac{(k + 2)k}{16(48)}$ = 1

Cross multiply, then solve for the variable.

(k + 2)(k) = 16(48)

k² + 2k - 768 = 0

Use quadratic formula to solve:

k = -1 +/- √769

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3 years ago

Answer in slope intercept form (y = Mx + b)

denpristay [2]

The answer is y= 1x + 12

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2 years ago

How many solutions does s^2 -35=-35 have​

How many solutions does s^2 -35=-35 have