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Tju [1.3M]
2 years ago
6

Good science requires that you record your observations accurately. TrueFalse

Mathematics
1 answer:
enyata [817]2 years ago
6 0

Answer:

True.

Step-by-step explanation:

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Which set of numbers is not closed under multiplication ?
kodGreya [7K]

Answer:

D). irrational numbers

Step-by-step explanation:

The irrational numbers are the set of number which can NOT be written as a ratio (fraction). Decimals which never end nor repeat are irrational numbers. Irrational numbers are "not closed" under addition, subtraction, multiplication or division.

4 0
3 years ago
Read 2 more answers
A cyclist travelled 4 miles in 15 minutes. What is her average speed in mph?
avanturin [10]

Answer:

16 Miles/Hours

Step-by-step explanation:

Average speed is the total distance covered divided by the total time

In that case we have a distance of 4 miles

Time is 15 minutes and in order to convert from minutes to hours we divide by 60 and it becomes 0.25 hours

So 4/0.25 is 16 Miles/Hours

8 0
3 years ago
<img src="https://tex.z-dn.net/?f=%283%20%5Cfrac%7B2%7D%7B5%7D%20%20-%201%20%5Cfrac%7B3%7D%7B10%7D%20%29%20%5Cdiv%201%20%5Cfrac%
nata0808 [166]

Answer:

\frac{3}{2}

Step-by-step explanation:

[\frac{2}{5}-\frac{3}{10}+(3-1)]\div 1\frac{2}{5}\\\\=(\frac{4}{10}-\frac{3}{10}+2)\div\frac{5+2}{5}\\\\=(\frac{1}{10}+2)\div \frac{7}{5}\\\\=(\frac{2\cdot10+1}{10})\div \frac{7}{5}\\\\=\frac{21}{10}\div \frac{7}{5}\\\\=\frac{21}{10}\times \frac{5}{7}\\\\=\frac{21\cdot5}{10\cdot7}\\\\=\frac{3}{2}

7 0
3 years ago
A boat costs $19,200 and decreases in value by 12% per year. How much will the boat be worth after 5 years?
Fiesta28 [93]
I = Prt
I = ($19,200)(12%)(5)
I = $11,520

The boat would cost $11,520 in 5 years.
3 0
3 years ago
Plz help need to turn in tmrw
lorasvet [3.4K]
<h2>Answer:</h2>

B. 12/5

<h2>Step-by-step explanation:</h2>

In a division, we should swap the second fraction and change the equation to times. After that, we can multiply each fraction easily.

4/5 : 1/3

= 4/5 x 3/1

= 12/5

In conclusion, the simplified quotient of 4/5 : 1/3 is 12/5

3 0
2 years ago
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