Answer:
2.165 × 10⁻⁵
Step-by-step explanation:
Move the decimal -5 places to the right. For every scientific notation, 10 is the default number you are <em>multiplying the decimal by.</em> The exponent is the number of places you moved the decimal point. The exponent is positive when moving left, negative when moving right.
<em>Hope it helps!</em>
Area of square = 
where, 
is the side length of the square.
s must be positive since it is a side length, so the negative root of 81 is rejected.
Perimeter= 
Perimeter= 
The real solutions the equation as given in the task content; x² = 225 are; +25 and -25.
<h3>What are the real solutions of the equation as given in the task content?</h3>
It follows from the task content that the real solutions of the equation as given in the task content can be determined as follows;
x² = 225
x = ± 15
Therefore, the real solutions of the equation are; +25 and -25.
Read more on real solutions of equations;
brainly.com/question/3122484
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Let,
the no. of adults be "x"
then, the no. of childern = total people - total adults
= (30 - x)
Now,
According to the quesiton,
2 (30 - x) + 5x = 87
60 - 2x + 5x = 87
60 + 3x = 87
3x = 87 - 60
3x = 27
x = 27 / 3
x = 9
So, there were 9 adults in the group
Answer:
<h2>C) the length of each shape will alternate between even and odd numbers</h2>
Step-by-step explanation:
the rest are incorrect
