25% as a fraction is 1/4 or 25/100 so as a decimal its 1/4 of 1 which is .25
Answer:
0.9%
Step-by-step explanation:
We have been given that Rich measured the height of a desk to be 80.7 cm. The actual height of the desk is 80 cm.
We will use percentage error formula to solve our given problem.





Therefore, Rich's percent error in calculation is 0.9%.
Answer:
Solution is x=-3 and x =1, because that is zero od function y=-x^2-2x+3