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MatroZZZ [7]
3 years ago
8

PLEASE HELP!! explain how to solve 2x+9= 15

Mathematics
1 answer:
Dovator [93]3 years ago
7 0

Answer:

Step-by-step explanation:

2x + 9 = 15

you move + 9 to the other side of the equation, you will get:

2x = 15 - 9

2x = 6

So, x = 3

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A swimming pool containing 2000l of water is 1/16 full. How many litres of water is required to make the pool half full
liq [111]

Answer: 16,000 litres

Step-by-step explanation:

1/16 of the pool is 2000l

8/16 full is 1/2 of the pool full

1/16 = 2000

8/16 = x

Cross multiply

1/16x = 2000 × 8/16

1/16x = 1000

Multiply both sides by 16

x = 16000

To make the pool half full, 16,000 litres is required.

5 0
3 years ago
The weekly sales of a magazine increased from 500,000 to 600,000. By what percentage did the magazine sales increase?
trapecia [35]
600,000-500,000=100,000\\\\\frac{100,000}{500,000}\cdot100\%=\frac{1}{5}\cdot100\%=20\%\leftarrow solution
4 0
4 years ago
Can anyone help me with this?
egoroff_w [7]

Answer:nope but I’m bored so do I wanna talk

Step-by-step explanation:

6 0
3 years ago
John was looking at his streaming music stats. the ratio of songs he liked to disliked was 5.2. If he listened to 63 songs total
Ilia_Sergeevich [38]

Answer:

liked = 45 ; disliked = 18

Step-by-step explanation:

Let the number of songs he liked be x & disliked be y.

The ratio of x & y :-

\frac{x}{y}  =  \frac{5}{2}  \\  =  > 2x = 5y \:  \:  \:  \:

And total number of songs he listened = 63

Then, x + y = 63...................eqn.1

=> x = 63 - y

Substituting the value of x in eqn. 2x = 5y gives :-

2(63 - y) = 5y

=> 126 - 2y = 5y

=> 7y = 126

=> y = 18

Substituting the value of y in eqn.1 gives

x = 63 - 18

= 45

Hence no. of songs he liked = 45 & disliked = 18

8 0
3 years ago
The equation of the line shown in the graph is y = ?.
Vesna [10]
Equation if the line for the graph is
y = -2x+1
6 0
3 years ago
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