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Ket [755]
3 years ago
13

Select the correct product. (x 2 + 6x + 9)(3x - 1)

Mathematics
2 answers:
Lorico [155]3 years ago
7 0
I got answer choice A for this one.
CaHeK987 [17]3 years ago
4 0
The answer is the first option.. lets Start this correctly, we do this by doing distributive property, lets multiply x^2 times 3x and we will get 3x^3 that is our first digit and as we can see they all start the same so we can't eliminate one just yet.. Lets go with the second one, x^2 times -1 and we will get -1x^2 now remember that we ave to find the next term and subtract or add it to this one in order to find the next number in the line... so lets go ahead and multiply 6x times 3x and get 18x^2 now lets add that to -1x^2 and we will get 17x^2, now lets see if we can eliminate one now.. as a matter of fact if you take notice knowing that our next term is positive 17x^2 we can know that practically all are eliminated execpt the first one.. this is because the second one is 17x^2 but it negavtive and ours is positive so that can't be, and the others are 19 and our number is 17 so those won't fit either but lets keep going to make sure. lets multiply 6x times -1 and get -6x, now 9 times 3x to get 27x lets add that one and -6x to get 21x that is our third number. finally multiply 9 times -9 and you will get -9 this is your final number... 

So your answer is the first option hope this helps
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12/k = 18/42 what is k
Maslowich

Answer:

k = 28

Step-by-step explanation:

12/k = 18/42

Cross multiply.

18k = 12 * 42

18k = 504

Divide both sides by 18.

k = 28

5 0
3 years ago
Please help guys I hope it's not to hard ???​
TiliK225 [7]

Answer:

guess it is hard

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help me I'm in a rush
Margaret [11]
I believe since it's a supplementary line, your answer will be 180-57

This would make your angle 123°. My apologies if I am wrong. I have not taken Geometry in a Year or two.
8 0
3 years ago
Read 2 more answers
Find $m\angle1$ and $m\angle2$ .
damaskus [11]

Answer:

m<1 = 125°

m<2 = 55°

Step-by-step explanation:

Okay, so we're dealing with alternate interior angles and all that sorta stuff, so I'll try to explain it best I can, if I'm too confusing let me know, let's go:

So the angle labeled 125° and angle 1 are alternate interior angles, so they're equal (yes, we're ignoring the fact that that might not me right because the other line isn't straight, I don't have another solution okay) anyways, so that means that:

1 = 125°

Now we know what 1 and 2 are on the same plane or axis or something like that, so basically, 1 and 2 HAVE TO add up to 180°, so that means that:

125 + x = 180

And now we just have to do the inverse operations thing:

180 - 125 = 55

So, m<1 = 125° and m<2 = 55°

tell me if this is wrong so I can fix it

hope this helps:)

8 0
3 years ago
Witch is greater -6 or 7
Firdavs [7]

Answer:

7

Step-by-step explanation:

Very easy problem once you understand "negative numbers."

"-6" is a <u>negative number.</u> A negative number is a number <u>below zero</u>. You'll know if a number is negative because it has a minus symbol (this symbol - ) before it. -6 is a negative number and below zero. 7 is a number above zero so therefore 7 is a greater number.

Here's another thing about negative numbers. Even though the number may look "bigger" (for example -7) is actually a SMALLER number than -6. The more "negative a number is" the smaller it is. Hope this helps and have a nice day!

7 0
3 years ago
Read 2 more answers
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