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chubhunter [2.5K]
3 years ago
10

Which three expressions are equavalent to the expression 3x-12-2(x+12)​

Mathematics
1 answer:
IgorC [24]3 years ago
6 0
3x-12-2x-24
Simplify and you get x-36
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500 people fill up 4/9 of the hall. What is the seating capacity of the hall?
Yuliya22 [10]
If 4/9 of the hall hold 500 people, then 1/9 of the hall holds 125 people.
Times that by 9 and you have your answer which is 1125 people.
7 0
3 years ago
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Dmitri wants to cover the top and sides of the box shown with glass tiles that are 3 5 mm square How many tiles does he need 20
Anna35 [415]
Lets split the box in pieces and then add:
top = 20*15 = 300
sidesA = 2*20*9 = 360, is multiplied  by 2 cause there are 2 sides like this
sidesB = 2*9*15 = 270, is multiplied  by 2 cause there are 2 sides like this
so in total we have:
total = 300 + 360 + 270 = 930 cm^2
if we express this quantity in mm^2 we have:
<span>1cm² = 100 mm²</span>total = 930*100 = 93000 mm^2
so if the tiles are 5 mm^2 we need:
total tiles = <span>93000/5 = 18600
we need 18600 tiles of 5 mm^2</span>
8 0
3 years ago
if x = 2 and y = 1 what is the expression of 3(y-1)+2x2 ( it’s not actually 2x2 the 2 is small i don’t remember what it’s called
MAXImum [283]

Answer:

substituting the given values we get,

3(1-1)+2*2

using bodmas we get

3(0)+2*2

0+2*2

0+4

4

therefore the answer is 4,thank you and mark the answer as brainliest if u find my answer helpful

4 0
3 years ago
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A line passes through the point (0,-4) and has slope-5. What is the equation of the line in slope-intercept form?​
Mazyrski [523]
Y= -5x -4 because you would do slope intercept form and sub the y and x in for -4 and 0
4 0
3 years ago
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Reduce to lowest terms. <br><br> 3m^2-3n^2/6m-6n<br><br> A) -m-n/2<br><br> B) m-n/2<br><br> C) m+n/2
USPshnik [31]

Answer:

C. m+n/2

Step-by-step explanation:

Factor out the 3 in the numerator and apply the difference of squares, factor out the 6 in the denominator, and reduce where applicable. It'll all cone out to look like option C.

6 0
3 years ago
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