Answer: b) -0.625
<u>Step-by-step explanation:</u>
The formula for the z-score is:

Answer:
$5,843 or $642
Step-by-step explanation:
At the end of 2 years, your savings will have grown to $5,842.
You will have earned in $642 in interest.
(1/5)s = 5
s = 5:(1/5) = 5*5 = 25
Answer:
0
Step-by-step explanation:
Given
- 0.4(3x - 2) +
← substitute x = 4 into the expression
= - 0.4(3(4) - 2) + 
= - 0.4(12 - 2) + 
= - 0.4(10) + 
= - 4 + 4 = 0
Answer:
There are 30 students in the class
Step-by-step explanation:
we can write a ratio as:
8:10 as 24:x
Writing this as an equation gives:
8
10
=
24
x
We can now solve for
x
while keeping the equation balanced:
10
x
×
8
10
=
10
x
×
24
x
10
x
×
8
10
=
10
x
×
24
x
x
×
8
=
10
×
24
8
x
=
240
8
x
8
=
240
8
8
x
8
=
30
x = 30