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3241004551 [841]
3 years ago
15

Use the x-intercept method to find all real solutions of the equation x^3-10x^2+17x+28=0

Mathematics
2 answers:
hammer [34]3 years ago
7 0

Answer:

x = -1, x = 4 and x = 7

Step-by-step explanation:

x-intercept method consists in plotting the equation, in this case x^3-10x^2+17x+28, and see where the graph intersects the x-axis. These are the points where for a given value of x, y = 0, and they are called the solutions of the equation. In this case these points are: x = -1, x = 4 and x = 7 (see figure attached).

Alekssandra [29.7K]3 years ago
6 0

A graphing calculator shows the x-intercepts of the expression on the left to be -1, 4, 7.

The real solutions to the cubic equation are x ∈ {-1, 4, 7}.

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harkovskaia [24]

Answer:

Step-by-step explanation:

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8 0
3 years ago
A 24 inch board is to be cut into three pieces so that the second piece is twice as long as the first piece and the third piece
Anastaziya [24]

F=length of first piece=x; S=length of second piece=2x

T=length of third piece=3x

.

F+S+T=24 inches

x+2x+3x=24 inches

6x=24in

F=x=4in

ANSWER 1: The length of the first piece is 4 inches.

.

S=2x=2(4in)=8in

ANSWER 2: The length of the second piece is 8 inches.

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T=3x=3(4in)=12 inches.

ANSWER 3: The length of the third piece is 12 inches.

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CHECK:

F+S+T=24in

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7 0
3 years ago
What is the 385/6 as a proper fraction
Effectus [21]

Answer:

Step 1 - Find Whole Number

Calculate out how many times the denominator goes into the numerator. To do that, divide 385 by 6 and keep only what is to the left of the decimal point:

385 / 6 = 64.1667 = 64

Step 2 - Find New Numerator

Multiply the answer from Step 1 by the denominator and deduct that from the original numerator.

385 - (6 x 64) = 1

Step 3 - Get Solution

Keep the original denominator and use the answers from Step 1 and Step 2 to get the answer. 385/6 as a mixed number is:

64 1

     ___

       6

Step-by-step explanation:

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Just asking. How are we supposed to answer this without some sort of picture with a graph or something? :/

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Answer:

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