The life span would be 24 months.
The formula for z-scores is:

Using the information we're given we have:

Multiply both sides by 8 to cancel it:
-3(8) = ((X-48)/8)*8
-24 = X-48
Add 48 to both sides:
-24+48 = X-48+48
24=X
Answer:
f
−
1
(
x
)
=
√
2
(
x
+
8
)
/2
,
−
√
2
(
x
+
8
)
/2
keep it under whole root
Step-by-step explanation:
Answer: 27.42 cm squared
explanation: separate the figure into three simple shapes (2 triangles, 1 rectangle)(picture of the three shapes attached)
solve for area of each shape
trangles: 1/2 x b x h
1/2 x 1.1 x 4.8 = 2.64
1/2 x 1.2 x 5.9 = 3.54
rectangle: l x w
3.6 x 5.9 = 21.24
finally, add all parts and you have your answer.
2.64 + 3.54 + 21.24 = 27.42
<h3><u>25</u> ( <u>13</u><u> </u> - <u>3</u><u>)</u></h3><h3> 6 ( 3 2)</h3>
<u>25</u><u> </u><u> </u>( <u>39 -9)</u>
6 (6)
<u>2</u><u>5</u><u> </u> × <u>30</u>
6 6
<u>125</u>
6
20 <u> 5</u><u> </u><u> </u> [ans]
6
Only 1 solution : when u calculate it the only answer you get is -1. Hope this helps