What is the value of b ?

Answers

Answer 1

Answer:

Two polynomials are equal if the coefficients are equal.

$x^3+(3+b)x^2+(3b-2)x-6\n\downarrow\qquad\ \ \downarrow\qquad\qquad\ \ \ \ \downarrow\nx^3\ +\ \ 6x^2\ \ \ \ +\ \ \ \ \ 7x\ \ -\ 6\n\nx^3\to1=1\nx^2\to3+b=6\nx\to3b-2=7\nconstans\to-6=-6\n\n3+b=6\ \wedge\ 3b-2=7\n\n3+b=6\ \ \ |-3\nb=3\n\n3b-2=\ \ \ \ |+2\n3b=9\ \ \ \ |:3\nb=3\n\nAnswer:\ \boxed{b=3}\to\boxed{B.}$

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If you roll two fair six-sided dice, what is the probability that at least one die shows a 3?

Answers

-- Two fair dice can land in 36 possible ways. (6 ways each).

-- The successful tosses are

      3 .... (not 3)
   (not 3) .... 3
and    3 .... 3

Three of the 36 possible outcomes are successful.

-- The probability of a successful toss is

   (3) / (36) = 1/12 = (8 and 1/3) % .

Answer:

11/36

Step-by-step explanation:

Got it wrong and the correct answer is 11/36.

Please help I need two other related equations to the problem C = K − 273.15.
please hurry.

Answers

k=273.15+c

that's one of them

Elena packed 48 cubes into this box each Cube has edges that are 1 centimeter how many layers of Cubes did Elena make

Answers

48 x 2 = 96 so 96 x 1 = 96 96 is ur answer

Tyrone takes 3/4 hour to paint a wall. His brother takes 1/3 of the time he takes. How long will his brother take to paint five similar wall.

Answers

3/4 of an hour =45minutes so 1/3 of an hour =20minutes that times 5=100minutes=1hour and 40 mins

It will take his brother 1 hour and 15 minutes to paint 5 walls

A graph with a line running through coordinates (0,0) and coordinates (30,24)Item 3

Carl's new car gets 27 miles per gallon. What is the equation that represents y, the total miles driven on x gallons of gas?

a. x = 27y

b. y = 27x

c. y = 27 + x

d. x = 27 + y

Answers

Answer:

b. y = 27x

Step-by-step explanation:

When you talk about "per" it means multiplication, and 27 is being multiplied by (x) gallons of gas.

Bianca filled 2 same-sized jars with flavored popcorn as a gift. She wants to glue a piece of ribbon around the edge of each lid.The radius of each jar lid is 5 centimeters. Approximately what is the total length of ribbon she will need for the two jar lids? (Use 3.14 for pi .)
A.
157 cm
B.
78.5 cm
C.
31.4 cm
D.
62.8 cm

Answers

Answer: D

Step-by-step explanation:

You have to multiply 2 times pi.

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