2 years ago

What’s the answer? For this question is hard

Mathematics

1 answer:

zvonat [6]2 years ago

6 0

Answer:

D. $53.76.

Step-by-step explanation:

20% = 0.20 as a decimal.

Price before Sales Tax = 64 - 0.20*64

= $51.20

Adding 5% sales tax we get

52.20 + 0.05*51.20

= $53.76 (answer).

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One of the x-intercepts of the parabola represented by the equation y = 3x^2 + 6x − 10 is approximately (1.08, 0).

Igoryamba

3x^2 + 6x - 10 = 0

x = [-6 +/- sqrt(^2 - 3*3*-10)] / 2*3

= 1.08 and -3.08

Other x -intercept is (-3.08,0)

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3 years ago

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A circle has a sector with area 27 and central angle of 120

Alex_Xolod [135]

Answer:

81π

Step-by-step explanation:

-The sum of central angles in a circle add up to 360°.

-Let x be the area of the circle.

-Given the area of a 120° is 27π, the circles area can be calculated as:

$A=27\pi\\\\120\textdegree=27\pi\\360\textdegree=x\\\\\therefore x=\frac{360\textdegree\times 27\pi}{120\textdegree}\\\\=3\times 27\pi\\\\=81\pi$

Hence, the area of the circle is 81π

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2 years ago

Please help! thank you guys!!! :)

Wittaler [7]

Answer:

Step-by-step explanation:

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2 years ago

How do i find out a

drek231 [11]

Answer:

it must be

$\frac{c}{8\pi \: b}$

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2 years ago

If the length of a rectangle is x-2 and its area is 2x3 – 8x2 + 2x+12, it’s width would be what?

hram777 [196]

Width would have to be a quadratic
Use long division to find the other factor of the cubic polynomial P (x).
P (x) factors in case it is reducible over R[x]
if it weren't then P (x) mod R [x] would be a field
otherwise you could use the Eisenstein Criterion.

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2 years ago