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prohojiy [21]
3 years ago
11

What is the solution to 4x^3 – 3x^2 – 7x < 0? A. (–ꝏ, –1) U (0, 1.75) B. (–ꝏ, –1] U [0, 1.75] C. (–1, 0) U (1.75, ꝏ) D. [–1,

0] U [1.75, ꝏ)

Mathematics
2 answers:
Nataly_w [17]3 years ago
7 0
The answer is the third one
qwelly [4]3 years ago
3 0

Answer:

The answer is A on edge

Step-by-step explanation:

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The sum of two positive integers, x and y, is not more than 40. The difference of the two integers is at least 20. Chancee choos
kvasek [131]

Answer:

No, Chancee mixed up the variables, the correct solution is that x must be between 20 and 40 and y must be between 0 and 10.

Step-by-step explanation:

Here, x and y are positive integers,

Such that, their sum is not more than 40,  

i.e. x + y ≤ 40 where x, y ≥ 0,

⇒ y ≤ 40 - x                 ...............(1),

Their difference is at least 20,

i.e. x - y ≥ 20

-y ≥ 20 - x

⇒ y ≤ x - 20   ............(2),

Graphing y ≤ 40 - x :

Related equation of inequality (1),

y = 40 - x

if x = 0, y = 40,

if y = 0, 0 = 40 - x ⇒ x = 40,

'≤' represents a solid line,

Join the points (0, 40) and (40, 0) by solid line.

Graphing y ≤ x - 20:

Related equation of inequality (1),

y = x - 20,

if x = 0, y = -20,

if y = 0, 0 = x - 20 ⇒ x = 20,

'≤' represents a solid line,

Join the points (0, -20) and (20, 0) by solid line.

By graphing we obtained a feasible region that is the solution of the system of inequalities (1) and (2) ( shown below ),

In which,

20 ≤ x ≤ 40 and 0 ≤ y ≤ 30

Hence, Chancee did not find the correct solution.

5 0
3 years ago
A shirt that is normally 19.95 is on sale for 20% off what is the sale price​
MAVERICK [17]

Answer:

$15.96

Step-by-step explanation:

Sales price = $19.95

Discount = 20%

Amount paid = $19.95 - ($19.95*20%) = $19.95 - $3.99 = $15.96

6 0
3 years ago
Read 2 more answers
What is the lateral area of a right cylinder if the radius of the base is 12 mm and the altitude of the cylinder is 5 times the
schepotkina [342]
Lateral Area of a cylinder is ; 2πR.H

R=12 mm and H= 15 mm


Then LATERAL area = 2π(12)(15) =48π ≈ 150 mm²
5 0
3 years ago
What is the slope of the line
anastassius [24]
Slope = 1/2

Hope this helps! Have a great day :)
8 0
3 years ago
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2.4n + 1.2n - 0.12 = 7.08
Basile [38]

Answer:

n=2

Step-by-step explanation:

7 0
3 years ago
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