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vovikov84 [41]
3 years ago
14

Find the roots of the quadratic equation x² – 8x = 9 by completing the square. Show your work.

Mathematics
1 answer:
Artist 52 [7]3 years ago
8 0
No solutions beacause you have to factor out numbers for -9 but they must equal -8 when adding them.
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I need the answer quickly please
Hoochie [10]

Answer:

c²=√181=13.45, or 13.5

Step-by-step explanation:

The pythagorean theorem is a²+b²=c²

Given this, we will plug in our numbers like this: 9²+10²=c²

9²+10²=181, but we have to find the square root of that.

c²=√181=13.45, or 13.5

I hope this helps!! :)

7 0
1 year ago
Read 2 more answers
The nba regulations require the basketball court to be 132 feet long. How many meters is length of the Court.??? Thank you!!!
Natalija [7]

Answer:

40.23 meters (rounded to 2 decimal places)

Step-by-step explanation:

We need to convert 132 feet to meters by using the conversion factor shown below:

1 feet = 0.3048 meters

Now we can setup a ratio to solve for the length of basketball court in meters (let it be x). Shown below:

\frac{1}{0.3048}=\frac{132}{x}\\x=132*0.3048\\x=40.2336

Thus, length of basketball court (in m) = 40.23 meters (rounded to 2 decimal places)

6 0
3 years ago
Terrific Tents has a new two-person tent. If the material costs $0.02 per square inch, find out how much it costs to make each t
AveGali [126]

Answer:

$280

Step-by-step explanation:

Please find attached the image of the tent

cost of the tent = cost per square inch x total surface area of a triangular prism

total surface area of a triangular prism = (perimeter x height) + 2(area of a triangle)

Area of a triangle = 1/2 x base x height = 1/2 x 40 x 50 = 1000in²

1000 x 2 = 2000

Perimeter = 50 + 50 + 50 = 150

150 x 80 = 12,000

total surface area = 12,000 + 2000 = 14,000

Total cost = 14,000 x 0.02 = $280

8 0
3 years ago
a rectangular field has 170 m of base and 28 m of height. Calculate your area and the price for covering it with synthetic grass
iogann1982 [59]

Answer:

Thye answer to your question is cost = $ 11900000

Step-by-step explanation:

Data

base = 170 m

height = 28 m

Area = ?

Price = ?

cost = $2500/1m²

Process

1.- Calculate the area of the field

Area = base x height

-Substitution

Area = 170 x 28

-Result

Area = 4760 m²

2.- Calculate the cost using proportions

                    1 m² ---------------- $2500

            4760 m² ----------------    x

                    x = (4760 x 2500) / 1

                    x = $ 11900000

5 0
3 years ago
Divide with decimal 16 divided by 23.20
Nastasia [14]

Answer:

The answer should be 0.68 i hope i helped :)

Step-by-step explanation: i used a long division decimal calculator ( which you can find here: https://www.calculatorsoup.com/calculators/math/longdivisiondecimals.php )

4 0
3 years ago
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