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3 years ago

3(4x + 10) = 12x + 20How many solutions does this equation have ?

Mathematics

1 answer:

Damm [24]3 years ago

7 0

There’s No solution

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Because i said so

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Ilya [14]

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2 years ago

Elena is trying to figure out how many movies she can download to her hard drive. The hard drive is supposed to hold 500 gigabyt

soldi70 [24.7K]

Answer:

Kindly check explanation

Step-by-step explanation:

Given that:

Maximum capacity of hard drive = 500 GB

Space used up = 58 GB

Size per movie = 8GB

Number of movies = x

[(Number of movies * size per movie) + used up space] should be less than or equal to the maximum capacity to f the drive.

From Elena's inequality, the total space taken up by movies + used up space is greater than total capacity of hard drive.

That is ;

[(8x + 58 ≤ 500

8x ≤ 500 - 58

8x ≤ 442

x ≤ 442 / 8

x ≤ 55.25

The maximum number of movies Elena can download is 55

8 0

3 years ago

One month Pablo rented 12 movies and 2 video games for a total of $65. The next month he rented 3 movies and 5 video games for a

borishaifa [10]

The rent for one movie is $4.50 and rent for one video game is $5.50

Step-by-step explanation:

Let,

Rent for one movie = x

Rent for one video game = y

According to given statement;

12x+2y=65 Eqn 1

3x+5y=41 Eqn 2

Multiplying Eqn 2 by 4

$4(3x+5y=41)\\12x+20y=164\ \ \ \ Eqn\ 3$

Subtracting Eqn 1 from Eqn 3

$(12x+20y)-(12x+2y)=164-65\\12x+20y-12x-2y=99\\18y=99\\$

Dividing both sides by 18

$\frac{18y}{18}=\frac{99}{18}\\y=5.50$

Putting y=5.50 in Eqn 2

$3x+5(5.50)=41\\3x+27.50=41\\3x=41-27.50\\3x=13.50$

Dividing both sides by 3

$\frac{3x}{3}=\frac{13.50}{3}\\x=4.50$

The rent for one movie is $4.50 and rent for one video game is $5.50

Keywords: linear equation, elimination method

Learn more about linear equations at:

#LearnwithBrainly

7 0

3 years ago

Solve this equation for x. X+13=22

12345 [234]

Answer:

The value of X = 9

Step-by-step explanation:

X+13=22

X = 22-13

X = 9

4 0

2 years ago

Read 2 more answers

3(4x + 10) = 12x + 20How many solutions does this equation have ?​

3(4x + 10) = 12x + 20How many solutions does this equation have ?