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3 years ago

Most accurate answer could get brainliest, please answer within 5 minutes!

Mathematics

2 answers:

padilas [110]3 years ago

8 0

I think it might be 1?

algol [13]3 years ago

4 0

Answer:

-14/25 is the right answer

Step-by-step explanation:

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Use the quadratic formula to solve x^2 -3x - 5 = 0. Round to two decimal places.

Evgen [1.6K]

Answer:

$\mathrm{The\:solutions\:to\:the\:quadratic\:equation\:are:}$

$x=\frac{3+\sqrt{29}}{2},\:x=\frac{3-\sqrt{29}}{2}$

Step-by-step explanation:

Given the equation

$x^2\:-3x\:-\:5\:=\:0$

solving with the quadratic formula

$\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}$

$x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

$\mathrm{For\:}\quad a=1,\:b=-3,\:c=-5$

$x_{1,\:2}=\frac{-\left(-3\right)\pm \sqrt{\left(-3\right)^2-4\cdot \:1\cdot \left(-5\right)}}{2\cdot \:1}$

$x_{1,\:2}=\frac{-\left(-3\right)\pm \sqrt{29}}{2\cdot \:1}$

separating the solutions

$x_1=\frac{-\left(-3\right)+\sqrt{29}}{2\cdot \:1},\:x_2=\frac{-\left(-3\right)-\sqrt{29}}{2\cdot \:1}$

solving

$x=\frac{-\left(-3\right)+\sqrt{29}}{2\cdot \:\:1}$

$=\frac{3+\sqrt{29}}{2\cdot \:1}$

$=\frac{3+\sqrt{29}}{2}$

also solving

$\:x=\frac{-\left(-3\right)-\sqrt{29}}{2\cdot \:\:1}$

$=\frac{3-\sqrt{29}}{2\cdot \:1}$

$=\frac{3-\sqrt{29}}{2}$

$\mathrm{The\:solutions\:to\:the\:quadratic\:equation\:are:}$

$x=\frac{3+\sqrt{29}}{2},\:x=\frac{3-\sqrt{29}}{2}$

7 0

3 years ago

Part a: the center of the circle

9966 [12]

Answer:

Center is N

Diameter is MO

3 radii is ( pn, on mn)

Step-by-step explanation:

The center is at the center so it's N

Diameter is between each two points on circle passing the center of circle

Radius is half the diameter

3 0

3 years ago

Find the measure of angle b

stepladder [879]

Answer:

32 degrees

Step-by-step explanation:

Makes sense. Brainlist me if I'm right

5 0

3 years ago

Is "y=x+1" proportional?

kiruha [24]

Yes its porportaional

4 0

3 years ago

The sum of two irrational numbers is rational

astra-53 [7]

Answer:The sum of two irrational numbers, in some cases, will be irrational. However, if the irrational parts of the numbers have a zero sum (cancel each other out), the sum will be rational.

Step-by-step explanation:

6 0

4 years ago