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slamgirl [31]
4 years ago
7

Work out this problem: 2x + 3x -12x Show you work

Mathematics
1 answer:
joja [24]4 years ago
7 0

Answer:

-7x

Step-by-step explanation:

2x + 3x - 12x

Add 2x + 3x, resulting in 5x

5x - 12x = -7x

It's negative because the -12 is the bigger number.

Hope this helps :D

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the price of a cycle is rs 3,600 . its price is redused by 20% and again further redused by 1/4 . find the final price of the cy
lesya [120]

price of cycle = 3600 Rs

if the price is reduced by 20%, the price will be:

3600 - (20/100*3600) = 3600 - (20*36)

                                      = 3600 - 720

                                      = 2880 Rs

if the price is further reduced by 1/4 (25%),

2880 - (25/100*2880) = 2880 - 720

                                      = 2160 Rs

Therefore, if the price is reduced first by 20% and this is further reduced by 25%, the final price after reduction will be 2160 Rs.

5 0
3 years ago
In a movie theater, the number of seats in a row is 8 greater than the total number of rows. How many rows are in the movie thea
Harman [31]

Answer:

26 rows

Step-by-step explanation:

this is like a rectangle length×width situation.

seats per row = s

number of rows = r

s × r = 884

s = r + 8

so, we can use e.g. the second equation in the first :

(r + 8) × r = 884

r² + 8r = 884

r² + 8r - 884 = 0

the general solution to such a quadratic equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

x = r

a = 1

b = 8

c = -884

r = (-8 ± sqrt(8² - 4×1×-884))/(2×1) =

= (-8 ± sqrt(64 + 3536))/2 = (-8 ± sqrt(3600))/2 =

= (-8 ± 60)/2 = -4 ± 30

r1 = -4 + 30 = 26

r2 = -4 - 30 = -34

a negative number did not make any sense for the number of rows, so r = 26 is our answer.

8 0
2 years ago
Select the correct answer below <br><br> Simplify
FrozenT [24]

Answer:

a.) 24

Step-by-step explanation:

a

8 0
3 years ago
Read 2 more answers
Susan was carrying a pitcher that contained 2/3 of a gallon of lemonade to the table for lunch. She slipped and spilled 1/4 of t
sasho [114]

Answer:

Susan spilled 1/6 of a gallon of lemonade.

Step-by-step explanation:

Since Susan was carrying a pitcher that contained 2/3 of a gallon of lemonade to the table for lunch, and she slipped and spilled 1/4 of the lemonade in the pitcher, to determine what fraction of a gallon of lemonade did she spill the following calculation must be performed:

2/3 = 0.6666

0.666666 x 1/4 = X

0.166666 = X

0.166666 = 1/6

Therefore, Susan spilled 1/6 of a gallon of lemonade.

3 0
3 years ago
WILL GIVE BEST RATING!!!!
stich3 [128]

(6a*5) + (6a*d)

30a + 6ad

30a + (6a*d)

So, 1, 2 and 4 are correct!

5 0
3 years ago
Read 2 more answers
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