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4 years ago

Solve for x: x + 15 = 45 Question 1 options: 30 60 -60 -30

Mathematics

1 answer:

brilliants [131]4 years ago

6 0

Answer: A. 30. x=30/ 30=x *The answer should be the positive sign.*

Step-by-step explanation:

subtraction property of equality is subtracting the same number from both sides of an equation does not change the equation.

a-c=b-c

addition property of equality is adding the same number to both sides of an equation does not change the equation.

a+c=b+c

subtract by 15 both sides of an equation.

x+15-15=45-15

simplify.

45-15=30

30+15=45

45-30=15

x=30 and 30=x

Hope this helps!

Thanks!

Have a great day!

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Read 2 more answers

In his free time Gary spends 10 hours per week on the internet and 9 hours per week on video games. If Gary has 5 hours of free

cluponka [151]

Answer:

Percentage of free time Gary spends on playing video games and using internet = 54.29%

Step-by-step explanation:

Given:

Gary spends 10 hours per week on the internet.

Gary spends 9 hours per week on video games.

Gary has 5 hours free time per day.

To find the percentage of free time Gary is using to play video game and use the internet.

Solution:

Total number of hours of free time Gary has per week = $5\times 7=35$

[As there are 7 days in a week so we multiply by 7]

Total number of hours of free time Gary spends on playing video games and using internet per week = $10+9=19$

Percentage of free time Gary spends on playing video games and using internet per week can be calculated as :

⇒ $\frac{\textrm{Total time spent on playing video games and using internet per week}}{\textrm{Total free time in a week}}\times 100$

⇒ $\frac{19}{35}\times 100$

⇒ 54.29% (Answer)

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