In a study of the effects of cognitive training on memory, 60 participants are recruited, run in a session where they are given a 10-page Wedding story to remember, and then tested. The participants are randomly assigned to one of three conditions: a) 20 subjects participate in a Memory Improvement Training program during the session, b) 20 subjects are given exercises that do not improve memory (i. e., focusing on a white board), but are told that the exercises are meant to help their memory, c) and 20 subjects receive no training during the session, but they are given the Memory Improvement Training program after the tests have been completed. All the participants are tested on the number of facts that they recall from the Wedding story and on accuracy of recall, measured by the number of errors in their reports.

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75

graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)