Round 3,989.23655 to the nearest tenth. Round 3,989.23655 to the nearest tenth.
3,989.24
3,989.237
3,989.2
3,990

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

the answer to the question is a  

it has the same slope and the same y-intercept.

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

theres no picture: /

step-by-step explanation: