Divide. Write your answer as a fraction in simplest form. − 7 1/0÷2/5=
1 answer:
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Answer:
<em>Thus, the dimensions of the metal plate are 10 dm and 8 dm.</em>
Step-by-step explanation:
For a quadratic equation:
The sum of the roots is -b and the product is c. Note the leading coefficient is 1.
We know the perimeter of the rectangular metal plate is 36 dm and its area is 80 dm^2. Being L and W its dimensions, then:
P=2(L+W)=36
A=L.W=80
Note both formulas are closely related to the roots of the quadratic equation, we only need to adjust the data for the perimeter to be exactly the sum of L+W and not double of it.
Thus we use the semi perimeter instead as P/2=L+W=18
The quadratic equation is, then:
Factoring by finding two numbers that add up to 18 and have a product of 80:
The solutions to the equation are:
x=10, x=8
Thus, the dimensions of the metal plate are 10 dm and 8 dm.
Answer:
The total of the sales price and sales tax is $ 588.35 .
Step-by-step explanation:
As given
$543.51 be the subtotal .
8.25% is the sales tax .
8.25% is written in the decimal form.
= 0.0825
Sales tax price = 0.0825 × 543.51
= $ 44.84 (Approx)
Total of sales price with sales tax = Sale price + Sales tax price
Putting the values in the above
= $543.51 + $44.84
= $ 588.35
Therefore the total of the sales price and sales tax is $ 588.35 .