Answer:
-1.85
Step-by-step explanation:
On TI-84
invT((1-0.92)/2), 19)
invT(0.04,19)
Since there are 100 centimeters in 1 meter, Kayleigh is greater than 1 meter.
Yes I believe it is but it will be really heavy
[Sorry, plz don't hate me]
Based on the calculations, the unknown number is equal to 
- Let the unknown number be x.
<h3>How to find an
unknown number:</h3>
Translate the word problem into an algebraic expression, we have;
Adding 21 to the unknown number:

Multiplying the result by 3:

84 more than two-thirds of the unknown number:

Equating the equations, we have:

Cross-multiplying, we have:

Read more on word problems here: brainly.com/question/13170908