Answer:
The correct options are 1, 3 and 4.
Step-by-step explanation:
We need to find the expressions whose simplified form is a rational number.
Rational number: If a number is defined in the form of p/q where p and q are integers and q≠0, then it is called a rational number.
For example: 0,2, 4.3 etc.
Irrational number: If a number can not defined in the form of p/q, where p and q are integers and q≠0, then it is called an irrational number.
First expression is
12 is a rational number.
Second expression is
is an irrational number.
Third expression is
21 is a rational number.
Fourth expression is
5 is a rational number.
Therefore, the correct options are 1, 3 and 4.
The answer is common ratio
Average speed = (distance covered) / (time to cover the distance)
= (500 miles) / (6.7 hours)
= (500 / 6.7) (mile/hour)
= 74.63 miles per hour.
I imagine there were quite a number of pit stops included in that.
This is faster than I expected when I first read your question.
That's really gettin' with it for cars in 1911 !
Answer:
$24.88
Step-by-step explanation:
<u><em>Given:</em></u>
<em>Samantha needs to purchase 7 notebooks at </em>
<em>$2.99 each and 5 pencils at $0.79 each. </em>
<u><em>To Find:</em></u>
<em>About how much will Samantha spend before sales tax?</em>
<u><em>Solution:</em></u>
<em>All we have to do is multiply and then add. </em>
<em>Starting with NoteBook;</em>
<em>Since each notebook cost - $2.99</em>
<em>Then 7 Notebook..</em>
<em>7 × $2.99</em>
<em>= $20.93</em>
<em>Now with Pencil;</em>
<em>Since each pencil cost - $0.79</em>
<em>Then 5 Pencil..</em>
<em>5 × 0.79</em>
<em>= $3.95</em>
<em>As a result, we add both together</em>
<em>$20.93 + $3.95</em>
<em>=$24.88</em>
<u><em>RevyBreeze~</em></u>