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Rzqust [24]
3 years ago
7

15x-6x+5xsquared -6x cubed - 2x squared +2(6x-2) please help me!!! (Show work)

Mathematics
1 answer:
Stels [109]3 years ago
6 0

15x-6x+5x^2-6x^3-2x^2+2(6x-2)\\\\=15x-6x+5x^2-6x^3-2x^2+12x-4\\\\=(-6x^3)+(5x^2-2x^2)+(15x-6x+12x)+(-4)\\\\=-6x^3+3x^2+21x-4

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Marti roll two dice. What is the probability that the sum of the dice is 7, given that the first die is showing a 2
mixas84 [53]
Showing 2 can help and it
5 0
3 years ago
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Find the value of x in the diagram below.
dsp73

Answer:

x = 31

Step-by-step explanation:

The 2 sides are congruent, meaning the 2 angles are equal so:

47 = x + 16

subtract 16 from both sides

31 = x

5 0
3 years ago
By driving 8 mph faster than Bob, John can make a 230 mile trip in one half hour less. How fast does Bob drive on the trip? Roun
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Answer: The speed of Bob is 56.8 km/hr.

Step-by-step explanation:

Let the speed of Bob be 'x'.

Let the speed of John be 'x-8'.

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According to question, we get that

\dfrac{230}{x}-\dfrac{230}{x+8}=\dfrac{3}{2}\\\\230\dfrac{x+8-x}{x(x+8)}=\dfrac{3}{2}\\\\\dfrac{230\times 8}{x^2+8x}=\dfrac{3}{2}\\\\\dfrac{1840}{x^2+8x}=\dfrac{3}{2}\\\\1840\times 2=3x^2+24x\\\\3680=3x^2+24x\\\\3x^2+24x-3680=0\\\\x\approx 56.8\ km/hr

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6 0
3 years ago
I need help In the figure, lines A and B are parallel
Keith_Richards [23]
I could be wrong but I believe it would be 35.
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3 years ago
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If an acute angle increases, then its supplement
nevsk [136]

Answer:

gets smaller.

Step-by-step explanation:

Quick Answer

To give you a short quick answer, the supplement is going to have to decrease or get smaller.

Example

Suppose the acute angle is 10 (anything under 90 will do).

Then the supplement is going to be 180 - 10 = 170

Now suppose the acute angle increase to 50 degrees.

That means the supplement will go from 180 - 50 = 130

Conclusion

As the acute angle gets bigger, the supplement gets smaller. This is an important idea to get clear. Bigger and Smaller or More or Less can be ugly little words, so anytime you come across them, pay attention. It will make your life in science so much easier.

6 0
3 years ago
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