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Gemiola [76]
3 years ago
8

1. Factor the expression 3X^3+4X^2-15X-20 Show your work

Mathematics
1 answer:
Sever21 [200]3 years ago
5 0
1
3 {x}^{3}  - 15x + 4 {x}^{2}  - 20
3x( {x}^{2}  - 5) + 4( {x}^{2}  - 5)
( {x}^{2}  - 5)(3x + 4)
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Is the relation a function? Why or why not? {(0,1),(3,5),(2,2),(-1,4)}
inn [45]
Pretty sure it's not.... I think a function can't have any negatives
6 0
4 years ago
7. which of the following would be an empty set ?
Alisiya [41]

Answer:

the set of odd numbers that are divisible by 2

7 0
3 years ago
Enter the number that belongs in the green box (please enter both numbers for the empty boxes)
VLD [36.1K]

Given:

The equation is:

5x-2=4+2x

To find:

The number that belongs in the green box and another box.

Solution:

We have,

5x-2=4+2x

Subtracting 2x from both sides, we get

5x-2-2x=4+2x-2x

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3x-2+2=4+2

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We need to divide both sides by 3 to isolate the variable x.

On dividing both side by 3, we get

\dfrac{3x}{3}=\dfrac{6}{3}

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3 0
3 years ago
In a local city, the temperature at noon is -3C The temperature is expected to decrease by 2.5C each hour until the temperature
LiRa [457]

Writing the equation that governs this situation:


-3C - (2.5C/hr)x = -18C


Simplifying, -3 - 2.5x = -18, or 3 + 2.5x = 18


Combining like terms: 2.5x = 18-3 = 15


Then x = 15/2.5 = 6. The temp. will reach -18C after 6 hours.

7 0
4 years ago
Read 2 more answers
Write x^4+4x^3+5x^3-20x-40 ÷ x^2-5
marysya [2.9K]

Write - x^4+4x^3+5x^3-20x-40 ÷ x^2-5


Word form-

x raised to the power of four plus four x to the power of three plus five x raised to the power of three minus twenty x minus fourty divided by x raised to the power of two minus five


Numerical form-

x^4+4x^3+5x^3-20x-40 ÷ x^2-5

4 0
4 years ago
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