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Serga [27]
3 years ago
6

How do I factor this polynomial? q^2-121

Mathematics
1 answer:
Tresset [83]3 years ago
5 0
q^2-121 =q^2-11^2=(q-11)(q+11)\\ \\ \\a^2-b^2 =(a-b)(a+b)


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24 = -6 (m+1) + 18 <br><br> What is the answer?
Nataly_w [17]

Answer:

m = -2

Step-by-step explanation:

<em>Distribute first.</em>

24 = -6(m+1) + 18

24 = -6m - 6 + 18

<em>Then you combine like terms.</em>

24= -6m + 12

<em>Then you still combine like terms. You subtract 12 from each side.</em>

24 = -6m + 12

-12            - 12

12= -6m

<em>Then divide by -6 to isolate the variable.</em>

12 = -6m

/-6     /-6

-2 = m

<em />

8 0
4 years ago
Help dont ge this, read this word problem..... Rob is saving to buy a new MP3 player. For every $15 he earns babysitting, he sav
Juli2301 [7.4K]
Rob saved $30. Do you have to explain, if so since he saved $6 for every $15, you would do 75 divided by 15 which is 5 then you would do 5 times 6 which gives you 30.
6 0
4 years ago
Last year a business earned 4.1*10^6 dollars in income.This year the business earned 2.05*10^8 dollars in income.Which best desc
jenyasd209 [6]

Answer:

This year the business earned about 50 times as much as it did last year

Step-by-step explanation:

I got this answer because you have to have the same exponents so for the last year's income the exponent is 6 so you have to raise that up to 8 so you have to move the decimal of 4.1, two places to the left which will get you 0.041 and so you divide 2.05 by 0.041 and you get 50 so 2.05 is 50 times bigger than 0.041. I hope this helped.

3 0
4 years ago
PLS HELP FAST I NEED IT
Gemiola [76]

Answer:

(b) 1:9

(c) 1:8

Step-by-step explanation:

(b) x*y : kx*ky, so 1:k² with k=3 is 1:9

(c) Assuming the rectangles get a z dimension, the volumes would have a ratio of xyz : xkykzk = xyz : xyzk³ = 1 : k³. With k=2 that is 1:8. But the z was never introduced so this is a bit inconclusive.

3 0
3 years ago
A number has the digits 2,7, and 5. To the nearest 100, the number rounds to 800. What is the number?
solmaris [256]

Answer:

752

Step-by-step explanation:

For the number to be rounded off to 800, it needs to be either 750 or above or 850 and below.


With the given numbers, we can only have the following combinations:

257   ~  300

275   ~  300

527   ~  500

572   ~  600

725   ~  700

752   ~  800

And hence, 752 is the only combination of numbers that fits.


Hope this helps!


7 0
3 years ago
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