Answer:
$648.
Step-by-step explanation:
$400+50% = $600
$600+8%=$648
The volume of rectangular prism = Length x width x height
150 = 7.5 x 2 x Length
Length = 150/(7.5 x 2)
Length = 10 inch
The error she made is Emi evaluated (46-78)² as - (32)² is wrong.
<h3>What is variance?</h3>
Variance is calculated as the average of squared differences of the data observations from the mean.
Given data: 87, 46, 90, 78, and 89.
Here, the first Emi find the difference of 89 - 78 correctly.
Now, Emi division is also correct.
Now, Emi evaluated (46 - 78)^2 as -(32)^2 is wrong.
(46-78)² = (-32)²
Here she used the negative sign outside.
Hence, Emi evaluated (46 - 78)^2 as -(32)^2 is wrong.
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Lenny's net proceeds algebraically are found as;
<h3>What is the equation?</h3>
A mathematical statement consisting of an equal symbol between two algebraic expressions with the same value is known as an equation.
Let the bought share will be $ x, and $y is the price per share
Paid fees to the broker = $ 20
The total amount spent = $(xy+20)
The price at which each share sells = $ A
Broker commission = 2 %
The total amount obtained after selling the shares;
⇒ ax - 2% of ax
⇒ 98 % of ax
Hence, Lenny's net proceeds algebraically are found as;
To learn more, about equations, refer;
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