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Rudik [331]
2 years ago
8

ANSWER QUICK PLSSSS AND MAKE SURE YOUR ANSWER IS CORRECT!!

Mathematics
1 answer:
Zielflug [23.3K]2 years ago
4 0
I think the first one is correct. Since “three less than z squared” insinuate that the value is 3 units less than the value z^2

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The volume of a box is 80 cubic feet with length x-3 and width x-1 and height x+5. What are the possible values of x? What are t
Kryger [21]

Answer:

  • the only possible value of x is 5
  • the dimensions are 2 × 4 × 10

Step-by-step explanation:

The cubic equation ...

  (x -3)(x -1)(x +5) = 80

has one real root: x = 5. Using that value for x, the dimensions become ...

  length = 5 - 3 = 2

  width = 5 - 1 = 4

  height = 5 + 5 = 10

The dimensions are (length, width, height) = (2, 4, 10).

_____

We cannot tell the thrust of the problem, since it has only one solution. Perhaps you're supposed to write the cubic in standard form and use the <em>Rational Root theorem</em> to find <em>possible values of x</em>. That form can be found to be ...

  (x -3)(x -1)(x +5) -80 = 0

  x³ +x² -17x -65 = 0

Descartes' rule of signs tells you there is one positive real root. The rational root theorem tells you possible rational roots are factors of 65:

  1, 5, 13, 65

We know that x must be greater than 3 (so all dimensions are positive). Thus <em>possible values of x are 5, 13, 65</em>, and we're pretty sure that 65 is way too large.

4 0
3 years ago
What is the value of 10p10
goblinko [34]
The value of 10p10 is 20.
3 0
3 years ago
Serena created a scale model of a bank check to present to charity. The model created at a scale of 8:1 and is 4 feet long. What
Zinaida [17]

Answer:

The length of the original check should be 6 inches or 0.5 ft


3 0
3 years ago
Read 2 more answers
Solve for the variable.<br> 3x = -7<br> A. -4<br> B. -2.3<br> C. 2.3<br> D. 4
MariettaO [177]
The correct answer is B.
7 0
3 years ago
Read 2 more answers
Cos W =0.53<br><br> Does anybody know this
Step2247 [10]

Answer:

58°

Step-by-step explanation:

Apply trig inverse properties

W = arccos(0.53)

W = 2\pi - arccos(0.53)

7 0
2 years ago
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