Given, the function that shows the proportion of students in a psychology experiment who could remember an eight-digit number correctly for t minutes,

$f(t) = 0.9 - 0.4\ln(t)$

If t = 7 minutes,

$f(7) = 0.9 - 0.4\ln(7)=0.9 - 0.77836=0.12164\approx 0.1$

Hence, the proportion that remembered the number for 7 minutes is 0.1 ( approx )

8 0

3 years ago

Select two ratios that are equivalent to 4:18

fredd [130]

36:8, 9:2, and 72: 16

Step-by-step explanation:

two ratios that are equivalent to 4:18

36:8, 9:2, and 72: 16

would all be equivalent. In order to find ratios that are equivalent to 18:4, you have to multiply both numbers by the same factor. For

8 0

3 years ago

Read the complete problem before answering.

lisabon 2012 [21]

1 1/8 = 1.125

2 2/8 = 2.25

1.125 +2.25 = 3.375 yards total

n = 3.375 x 4.30

n = 14.5125 rounds to $14.51 total

7 0

3 years ago