MATHEMATICS MIDDLE SCHOOL

Need help in question number 23 ONLY pleaseee!!

Answers

Answer 1

Answer:

Answer:

3.6 hours.

Step-by-step explanation:

We work in terms of rates per hour:

1/9 + 1/6 = 1/x where x is the time for 2 pipes working together.

Multiply through by the LCD of 6, 9 and x ( which is 18x) :-

2x + 3x = 18

5x = 18

x = 3.6 hours.

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Find the perimeter of the figure below notice that one side is not given
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CAN PLEASE PLEASE GET HELP PLEASE I NEED IT PLEASE AND THANK YOU

Answers

Answer:

Step-by-step explanation:

the domain for (2x-1)/(x^2-7) is x not equal to +/- sqrt(7)

Two step equation
-9x+0.4=4

Answers

Answer:

x= 0.4

Step-by-step explanation:

-9x+0.4= 4

Subtract to both sides.

-9x+0.4= 4.0

-0.4 -0.4

Divide to both sides.

-9x= 3.6

9 9

x= 0.4

Answer:

-0.4

Step-by-step explanation:

25% of the money is £35 what is the whole amount?

Answers

I got 140.

I did 100% divided by 25% to get 4 so then I said 4 times 35 to get 140

The number 0.14114111411114...is
1) rational
2) irrational

Answers

Answer:

irrational

Step-by-step explanation:

It cannot be expressed as a fraction

Final answer:

The number 0.14114111411114... is irrational because it cannot be expressed as a fraction.

Explanation:

The number 0.14114111411114... is irrational.

To determine whether a number is rational or irrational, we need to check if it can be expressed as a ratio or fraction of two integers.

In this case, the number 0.14114111411114... cannot be written as a fraction because it has a non-repeating sequence of digits. Therefore, it is an irrational number.

Learn more about Irrational Numbers here:

brainly.com/question/36897609

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Jessica was solving an equation. After she finished simplifying, her result was 0=2. This result confused her. Explain to Jessica what her result means. Explain your reasoning thoroughly.

Answers

It means that the equations are not true. The straight lines are always parallel to the X-axis in all cases Therefore, the line doesn't cut the X-axis. This means that: there is no solution to the equation

Jessica's result means that any value of x (or any variable she used) would not be a solution to the equation. When something like 0 = 2 comes up, they answer is no solution.

For Your Information:

If you get 2=2 or 0=0 or anything like that, the solutions are all real numbers. Any value of x (or any variable used) will be a solution to the equation.

Please comment to let me know you understand. I hope this was helpful!

20% of a number is 64
what is 50% of the number?

explain how you worked this out

Answers

is %
__ = __
of 100

64 20%
__ = __
x 100

20x= 6,400
Divide.
6,400/20=320.
Half or 50% of 320 is 160.