MATHEMATICS MIDDLE SCHOOL

Is the number rational or irrational?square root 48
square root 9
square root 39
square root 289

Answers

Answer 1
Answer: 1. irrational: √48 = 6.92820323028

2. rational: √9 = 3

3. irrational: √39 = 6.2449979984

4. rational: √289 = 14
Answer 2
Answer:

Answer:

1) Irrational: √48 = 6.92820323028!

2) Rational: √9 = 3!

3) Irrational: √39 = 6.2449979984!

4) Rational: √289 = 14!

Step-by-step explanation:

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(15x2 – 24x + 9) ÷ (3x – 3)

Answers

\bf 15x^2-24x+9/ 3x-3\implies \cfrac{15x^2-24x+9}{3x-3}\implies \cfrac{\underline{3}(5x^2-8x+3)}{\underline{3}(x-1)}\n\n\n\cfrac{5x^2-8x+3}{x-1}\implies \cfrac{(5x-3)\underline{(x-1)}}{\underline{(x-1)}}\implies 5x-3

Explain how to use the missing pieces strategy to compare two fractions. Include a diagram with your explanation.

Answers

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A modern art museum has the dimensions shown in the figure.

What is the total amount of space inside the museum?

square meters

Answers

Answer:

3,840

Step-by-step explanation:

hopes that helps! I just did that assignment

Answer:

3,840

Step-by-step explanation:

Determine the slope and y-intercept of the graph:
2x + 5y = 10

Answers

Slope is -2/5 and y-intercept is 2

Step-by-step explanation:

  • Step 1: Write the equation in slope-intercept form y = mx + b

2x + 5y = 10

5y = -2x + 10

y = -2/5 x + 10/5

y = -2/5 x + 2

  • Step 2: Find the slope and y-intercept from the equation.

Slope, m = -2/5

y-intercept, b = 2

15 is 30% of what number?

Answers

15\ is\ 30\%\ of\ x\n\n30\%=(30)/(100)=(3)/(10)=0.3\n\n15\ is\ 0.3\ of\ x\n\ntherefore\n\n0.3x=15\Rightarrow x=15:0.3\n\n\boxed{x=50}\n\nother\ method:


\begin{array}{cccc}30\%&-&15&|divide\ both\ sides\ by\ 3\n\n10\%&-&5&|multiply\ both\ sides\ by\ 10\n\n100\%&-&50&-solution\end{array}

What is the MAD of 15, 17, 15, 17, 21, 17, 15, 21, 20, and 18

Answers

Okay i will just do this step by step...

1st.) Find the mean of all the values. 
Of course finding the mean is adding all the numbers up together and dividing by the number of numbers present. 
So add all the numbers...
15 + 17 + 15 + 17 + 21 + 17 + 15 + 21 + 20 + 18 = 176
Now divide by 10 since there are ten numbers. 
176 ÷ 10 = 17.6 

2nd.) subtract the mean from each value, (ignore the minus signs in our answer, they are not needed, our answer will be a positive number!!!)
So...
15 - 17.6 = 2.6 
17 - 17.6 = 0.6
15 - 17.6 = 2.6 
17 - 17.6 = 0.6 
21 - 17.6 = 3.4
17 - 17.6 = 0.6 
15 - 17.6 = 2.6 
21 - 17.6 = 3.4
20 - 17.6 = 2.4
18 - 17.6 = 0.4 

Now our new Set of numbers is...
2.6, 0.6, 2.6, 0.6, 3.4, 0.6, 2.6, 3.4, 2.4, 0.4 

3rd.)  So now we have to take those numbers and find the Mean out of those... Soo first add them up together. 
2.6 + 0.6 + 2.6 + 0.6 + 3.4 + 0.6 + 2.6 + 3.4 + 2.4 + 0.4 = 19.2 
Now divide by the number of numbers present or in this case (10)
soooo
19.2 ÷ 10 = 1.92

sooooo
MAD = 1.92

And if you loose hope, you can always eat a pineapple :)
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