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Vera_Pavlovna [14]
3 years ago
12

Find the number of real number solutions for the equation. x^2+0x-1=0

Mathematics
1 answer:
Kazeer [188]3 years ago
3 0

Answer:

+1

-1

Step-by-step explanation:

Given equation :

x^{2} +0x-1 = 0

x^{2} -1 = 0\\x^{2} =1\\x=\sqrt{1}

x= ±1

x= 1 and x= -1

±1 lies in solution set of real numbers !

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What is the measurement, in degrees, of angle 1?
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Answer:

180 - 55 = angle 1

80 - 55 = 25 so 180 - 55 = 125

angle 1 = 125 degrees

3 0
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8 0
3 years ago
What would the answers to these be?
amm1812

The first equation, 8x - 9y = - 23

Obtain the equation in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = ( \frac{1}{2}, 3) and (x₂, y₂ ) = (- 4, - 1 )

m = \frac{-1-3}{-4-1/2} = (- 4)/- \frac{9}{2} = \frac{8}{9}

partial equation is y = \frac{8}{9} x + c

to find c substitute either of the 2 points into the partial equation

using (- 4, - 1 ), then

- 1 = - \frac{32}{9} + c ⇒ c = \frac{23}{9}

y = \frac{8}{9} x +\frac{23}{9} ← in slope- intercept form

the equation of a line in standard form is

Ax + By = C ( A is a positive integer and B, C are integers )

rearrange the slope- intercept equation into this form

multiply through by 9

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8x - 9y = - 23 in standard form


4 0
3 years ago
What percent of 95 is 74
Softa [21]
74 is what percent of 95?


74 is P% of 95


Equation: Y = P% * X


Solving our equation for P

P% = Y/X

P% = 74/95

p = 0.7789

Convert decimal to percent:

<span>P% = 0.7789 * 100 = 77.89%
</span>

Hope I helped!

Let me know if you need anything else!

~ Zoe
7 0
3 years ago
Which of these numbers is in the solution set of x + 5 = 15? A. 10 B. 3 C. 20 D. 11
stealth61 [152]

Answer:

A

Step-by-step explanation:

10 + 5 = 15

6 0
3 years ago
Read 2 more answers
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