3 years ago

One sector of a circle graph covers 55% of the graph. What is the central angle of this sector?

Mathematics

1 answer:

vfiekz [6]3 years ago

5 0

The central angle is 90

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2 years ago

What should be done to solve the following equation? (7.5)x = 45

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Divide each side by 7.5

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3 years ago

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Solve the system of equations using elimination: 8x - 8y = 0 and<br> -5x - 7y= -12.

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Step-by-step explanation:

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2 years ago

Which of the following equations has the same solutions as the equation 3x + 2y= -12

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Answer:

x= -2/3y-4

Step-by-step explanation:

3x+2y=-12

3x+2y-2y= -2y-12

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3 years ago

What is the value of b ?

HACTEHA [7]

Two polynomials are equal if the coefficients are equal.

$x^3+(3+b)x^2+(3b-2)x-6\\\downarrow\qquad\ \ \downarrow\qquad\qquad\ \ \ \ \downarrow\\x^3\ +\ \ 6x^2\ \ \ \ +\ \ \ \ \ 7x\ \ -\ 6\\\\x^3\to1=1\\x^2\to3+b=6\\x\to3b-2=7\\constans\to-6=-6\\\\3+b=6\ \wedge\ 3b-2=7\\\\3+b=6\ \ \ |-3\\b=3\\\\3b-2=\ \ \ \ |+2\\3b=9\ \ \ \ |:3\\b=3\\\\Answer:\ \boxed{b=3}\to\boxed{B.}$

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2 years ago