3 years ago

What is the area of this circle(express your answer using n)

Mathematics

2 answers:

adell [148]3 years ago

7 0

The answers is 36!!!!!!

saw5 [17]3 years ago

6 0

THE ANSWER IS 36 NOT 5 BECAYUSE 5 IS BIGGER THEN 15

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Which of the following expressions are equivalent to -5+7-(-3).

SpyIntel [72]

Answer:

Step-by-step explanation:

mark brainliest its just in different form

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3 years ago

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Identify the zeros of the function f(x) = 4x2 − 8x − 1 using the Quadratic Formula. HELP ASAP!!

forsale [732]

$1+\dfrac{\sqrt{5}}{2},1-\dfrac{\sqrt{5}}{2}$

Step-by-step explanation:

The given equation is $4x^{2}-8x-1$

Let $a$ be the coefficient of $x^{2}$

Let $b$ be the coefficient of $x$

Let $c$ be the constant.

Then the roots α,β for the equation $ax^{2}+bx+c$ are $\dfrac{-b+\sqrt{b^{2}-4ac} }{2a},\dfrac{-b-\sqrt{b^{2}-4ac} }{2a}$

So,α= $\frac{-b+\sqrt{b^{2}-4ac} }{2a}=\frac{8+\sqrt{64+16} }{8}=\frac{8+4\sqrt{5}}{8}=1+\frac{\sqrt{5}}{2}$

β= $\frac{-b-\sqrt{b^{2}-4ac} }{2a}=\frac{8-\sqrt{64+16} }{8}=\frac{8-4\sqrt{5}}{8}=1-\frac{\sqrt{5}}{2}$ .

So the roots are $1+\frac{\sqrt{5}}{2},1+\frac{\sqrt{5}}{2}$

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3 years ago

⚠️NEED HELP ASAP ⚠️The following polygons are similar. Solve for x.

Nikolay [14]

G it’s 6 answer hope it helps sorry if I wrong

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3 years ago

HELP!! BRAINLIEST!! +15 POINTS!! REAL ANSWERS ONLY PLEASE

MissTica

Lol that’s so easy haha

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2 years ago

What is the volume of a cylinder that has a diameter of 14 and height of 18? Round your answer to the nearest

mamaluj [8]

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252

Step-by-step explanation:

and it has the nearest tenth value is 126

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2 years ago