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Mashutka [201]
3 years ago
11

Given an equation x3 - 8x2 - 9x + 72 = 0, find the zeros.

Mathematics
1 answer:
sveta [45]3 years ago
7 0

Answer:

= 28/3

Step-by-step explanation:

Let's solve your equation step-by-step.

x(3)−(8)(2)−9x+72=0

Step 1: Simplify both sides of the equation.

x(3)−(8)(2)−9x+72=0

3x+−16+−9x+72=0

(3x+−9x)+(−16+72)=0(Combine Like Terms)

−6x+56=0

−6x+56=0

Step 2: Subtract 56 from both sides.

−6x+56−56=0−56

−6x=−56

Step 3: Divide both sides by -6.

−6x

−6

=

−56

−6

x=

28

3

Answer:

x=

28

3

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A 10-foot ladder leans against a wall so that it is 6 feet high at the top. The ladder is moved so that the base of the ladder t
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Answer:

Step-by-step explanation:

The Pythagorean Theorem holds for both positions.

The first configuration is an 6-8-10 right triangle.

The second configuration using the Pythagorean Theorem:

10^2 = (8-2x)^2 + (6 + x)^2

100 = 64 - 32x + 4x^2 + 36 + 12x + x^2

100 = 100 - 20x + 5x^2

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x = 4 feet (we throw out the x = 0 solution as extraneous)

8 0
3 years ago
Read 2 more answers
Sam sold his bike to Suzie for 35% more than he paid for it. Suzie then sold the bike to Stanley for 20% more than what she paid
kolezko [41]

Answer: 162% of original price was paid by Stanley for the bike.

Step-by-step explanation:

let the original price paid by Sam be x

Then Sam sold his bike to Suzie for 35% more than he paid for it.

Price paid by Suzie = x + 35% of x = x + 0.35 × x = 1.35 x

After which  Suzie then sold the bike to Stanley for 20% more than what she paid for it.

Price paid by Stanley = 1.35 x + 20% of 1.35x = 1.35 x + (0.20) × 1.35x = 1.62x

Percent of the original price paid by Stanley for bike

=\frac{\text{price paid by Stanley}\times 100}{\text{original price}}=\frac{1.62x\times 100}{x}=162\%

Hence,162% of original price was paid by Stanley for the bike.

7 0
3 years ago
What is the value of the base in the power (-125) -3? (-3 is an exponent)
Klio2033 [76]
The answer going to be 120
4 0
4 years ago
Find the value of x.
makkiz [27]

Answer:

41

Step-by-step explanation:

76, x and 63 are linear pair angles.

Sum of linear pair angles is 180,

76 + x + 63 = 180

x + 76 + 63 = 180

x + 139 = 180

x = 180 - 139

x = 42

5 0
2 years ago
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-3x+2-1+4x <br><br> A. 7x+3<br> B. X+1<br> C.-7x-3<br> D.x+5
Sladkaya [172]
Combine like terms

-3x + 4x = x
2 - 1 = 1

B. x + 1 is your answer

hope this helps
3 0
4 years ago
Read 2 more answers
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