3 years ago

Really easy math problem 5pts

Mathematics

2 answers:

aleksandr82 [10.1K]3 years ago

7 0

Given that it is an isosceles triangle ...

180 - 54 - 54 = 72°

tangare [24]3 years ago

5 0

Answer:

180 - 54 - 54 = 72°

Step-by-step explanation:

Hope I can help you :)

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Which are the solutions of x2 = 19x + 1?

Finger [1]

Answer:

$(\frac{19-\sqrt{365}} {2},\frac{19+\sqrt{365}} {2})$

Step-by-step explanation:

we have

$x^2=19x+1$

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-x^{2}-19x-1=0$

$a=1\\b=-19\\c=-1$

substitute in the formula

$x=\frac{-(-19)\pm\sqrt{-19^{2}-4(1)(-1)}} {2(1)}$

$x=\frac{19\pm\sqrt{365}} {2}$

$x=\frac{19+\sqrt{365}} {2}$

$x=\frac{19-\sqrt{365}} {2}$

$(\frac{19-\sqrt{365}} {2},\frac{19+\sqrt{365}} {2})$

therefore

StartFraction 19 minus StartRoot 365 EndRoot Over 2 EndFraction comma StartFraction 19 + StartRoot 365 EndRoot Over 2 EndFraction

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3 years ago

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Ilia_Sergeevich [38]

Answer:

Step-by-step explanation:

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3 years ago

What is y=2(x+1)^2 in standard form

Setler79 [48]

Y=4x+4
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Select the letter of the correct answer.

sveta [45]

Would it be B which is 51%
as you do 129 devided by 3.3 = 39.1
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141 is just over half

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