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3 years ago

Find the vertex of the parabola whose equation is y = x2 + 6x + 2

Mathematics

2 answers:

avanturin [10]3 years ago

6 0

the vertex would be -7

Natalija [7]3 years ago

4 0

The vertex would be -7 because

you first have to find the axis of symmetry which is -b/2a so -6/2 is -3, now you have to plug it back in so -3^2 would be 9-18+2 which is -7

i hope this helpeddd

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Which fraction has a value that is equal to 3/4

Katena32 [7]

3/4
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0.20/4=0.05R0.00 or 0.05 + 0.00/4
now put it all together
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6 0

3 years ago

PLEASE HELP!

IrinaVladis [17]

Answer:

Step-by-step explanation:

<h3>Sphere:</h3>

1) a) r = 7 cm

$\sf \boxed{\text{Volume of sphere=$\dfrac{4}{3}\pi r^3$}}$

$\sf =\dfrac{4}{3}*3.14*7*7*7\\\\= 1436 \ cm^3$

$\sf \boxed{\text{\bf Surface area of sphere = $4\pi r^2$}}$

= 4*3.14 * 7 * 7

= 615.44 cm²

b) r= 8.4 cm

$Volume = \dfrac{4}{3}\pi r^3$

$\sf =\dfrac{4}{3}*\dfrac{22}{7}*8.4*8.4*8.4\\\\= 2483.7 \ cm^3$

Surface area = 4*3.14*8.4*8.4

= 887.04 cm²

<h3>Hemisphere:</h3>

a) r = 6 cm

$\sf \boxed{\text{\bf Volume of hemisphere =$\dfrac{2}{3} \pi r^3$}}$

$\sf =\dfrac{2}{3}*3.14*6*6*6\\\\= 452.16 \ cm^3$

$\sf \boxed{\text{\bf Surface area of hemisphere=3 \pi r^2}}$ $\sf \boxed{\text{\bf Surface area of hemisphere = $3 \pi r^2$}}$

= 3 * 3.14 * 6 * 6

= 339.12 cm²

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2 years ago

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Assoli18 [71]

Answer:

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Step-by-step explanation:

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3 years ago

X+y=4 and x-y=6 substitution

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Y = -1
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3 years ago

Read 2 more answers

Select the basic integration formula you can use to find the indefinite integral.

kondaur [170]

Answer:

$\int \dfrac{du}{u}=\log|u|+C$

$\int u^n du=\dfrac{u^{n+1}}{n+1}+C$

$\int \dfrac{du}{u\sqrt{u^2-a^2}}=\dfrac{1}{a}\csc^{-1}(\dfrac{x}{a})+C$

Step-by-step explanation:

$\int \dfrac{du}{u}=\log|u|+C$ $[\because \int \dfrac{dx}{x}=\log |x|+C]$

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3 years ago