The estimate of a bookcase was 78.25in .the actual measurement was 75.50in. to the nearest tenth of a percent ,what was the percent error in the estimate.

3.5% Error

Step-by-step explanation:

I used this equation - 100 * (1 - (75.5/78.25)) = 3.514376...(Rounded to the tenths place you get 3.5)

Breakdown: You want to get your error to do this first you get your percent that was correct which is - (75.5/78.25)

You then subtract this by one because this will give you your margin of error as a decimal hence - (1 - (75.5/78.25))

Lastly, multiply this by 100 because you want to convert the decimal into a percent then round to the nearest tenth of a percent resulting in 3.5% error.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

fdvs

step-by-step explanation: vsfdvsfvd