Marta measured the temperature as 65°f. what is the margin of error?
a . 60°f to 70°f
b .64°f to 66°f
c .64.5°f to 65.5°f
d .65.5°f to 66.5°f

Option C is correct.

Step-by-step explanation:

" Margin of error, mathematically speaking, is the range around any numerical answer that’s given in survey report and how closely the results represent the population on the whole ".

Marta measured the temperature as 65°F.

As in option C when we add and subtract 0.5 units in the measured temperature we get 64.5°F and 65.5°F.

Hence these are the most closely related value to 65°F.

While in other options the value are not so closely related.

Hence, margin of error is 64.5°F to 65.5°F.

Hence, option C is correct.

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

ask for details followreport by buttfacelily 2 minutes ago

answers

rauschg

rauschg · hand

know the answer? add it here!

step-by-step explanation:

really really sorry if i'm

-12 -5(x + 4) = 3x

-12 - 5x - 20 = 3x

-12 - 20 - 5x = 3x

-32 - 5x = 3x

    + 5x   + 5x

-32 = 8x

8         8

- 4= x