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3 years ago

Can you guys check if my answer is right please? Will give brainiest to best answer

Mathematics

1 answer:

frutty [35]3 years ago

5 0

≈452.39
A=4•pi•r^2
Hope this is correct! :)

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Create a polynomial that is added to 5x2 + 6x + 9 to get 7x2 + 9x + 14.

DiKsa [7]

Answer:

Step-by-step explanation:

Subtract first from second

= 2x^2 + 3x + 5

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3 years ago

11.5 is what percent of 8? Round to the nearest tenth.

Alik [6]

Answer:

143.8% is the answer

6 0

3 years ago

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Pllllllllllllllllllllleasee one guys i neeed ur help one

Svetllana [295]

${ \qquad\qquad\huge\underline{{\sf Answer}}}$

Let's solve ~

Calculate discriminant :

$\qquad \sf \dashrightarrow \: 3 {x}^{2} + 6x - 1$

a = 3
b = 6
c = 1

$\qquad \sf \dashrightarrow \: discriminant = {b}^{2} - 4ac$

$\qquad \sf \dashrightarrow \: d = (6) {}^{2} - (4 \times 3 \times 1)$

$\qquad \sf \dashrightarrow \: d = 36 - 12$

$\qquad \sf \dashrightarrow \: d = 24$

$\qquad \sf \dashrightarrow \: \sqrt {d} = 2 \sqrt{6}$

Now, let's calculate it's roots ( x - intercepts )

$\qquad \sf \dashrightarrow \: x = \cfrac{ - b \pm \sqrt{d} }{2a}$

$\qquad \sf \dashrightarrow \: x = \cfrac{ - 6\pm 2 \sqrt{6} }{2 \times 3}$

$\qquad \sf \dashrightarrow \: x = \cfrac{ - 6\pm 2 \sqrt{6} }{6}$

So, the intercepts are :

$\qquad \sf \dashrightarrow \: x = \cfrac{ - 6 - 2 \sqrt{6} }{6}$

and

$\qquad \sf \dashrightarrow \: x = \cfrac{ - 6 + 2 \sqrt{6} }{6}$

5 0

2 years ago

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The booster club now raises $0.41 for each pom pom they sell.

VLD [36.1K]

If you do .41x122 you get 50

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2 years ago

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Problem 5

ddd [48]

Answer:

100000000.09068588606047357608487007037864776060797704ww

Step-by-step explanation:

it is on gole

3 0

3 years ago