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PSYCHO15rus [73]
3 years ago
15

Use factoring to solve for all solutions of the quadratic equation.

Mathematics
1 answer:
Vsevolod [243]3 years ago
4 0
◆ QUADRATIC RESOLUTIONS ◆

we \: are \: given \: the \: expression \:  -  \\  \\  {x}^{2}  + 25 = 0 \\  \\  {x}^{2}  =  - 25 \\  \\ (i =  \sqrt{ - 1) }   \\ ( {i}^{2}  =  - 1)\\  \\  {x}^{2}  =  - 25 \\  \\  {x}^{2}  = 25 {i}^{2}  \\  \\ x =  + 5i \:  \:  \:  \: or \:  \:  \:  \:  \: x =  - 5i \:  \:  \:  \: ans.
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Help! I need to know the circumference of the circle and the area of the half circle! Use 3.14 for pi
dedylja [7]

Answer:

18.8495559215

Step-by-step explanation:

circumference = diameter * pi

6 * π = 18.8495559215

5 0
3 years ago
What is the answer to 7/5 = 10.5/b
Pavlova-9 [17]

Answer: b=14.7

Step-by-step explanation:

6 0
3 years ago
Item 13 Write and solve an equation to answer the question, "What number aa is 25% of 64?" An equation is =0.25⋅=0.25⋅ . The sol
vladimir1956 [14]
What number is 25% of 64....

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3 0
3 years ago
Isabelle plans to line her flower garden with a decorative border. Her flower bed is 60 inches by 78 inches. The border is sold
andrew11 [14]

Step-by-step explanation:

I guess, the flower bed is a true rectangle, right ?

so, then, the perimeter of that rectangle is

2×length + 2×width = 2×78 + 2×60 = 156 + 120 = 276 in.

1 ft = 12 in

276 in = 23 ft

she can only buy a bundle of 40 ft.

that means she will have

40 - 23 = 17 ft left.

5 0
2 years ago
Water weighs 62.4 pounds per cubic foot. How much does the water in a tank that measures 7 ft × 4 ft × 9 in, weigh?
andriy [413]

Answer:

  • <u>1,310 lb</u>

Explanation:

<u>1) Calculate the volume of the water in the tank.</u>

  • Area of the base of the tank: B = 7 ft × 4 ft = 28 ft²
  • Height of the tank: H = 9 in = 9 in × 1 ft / 12 in = 0.75 ft
  • Volume of the tank: V = area of the base × height = B × H = 28 ft² × 0.75 ft = 21 ft³.

<u>2) Calculate the weight of 21 ft³ of water.</u>

Since this is not a chemistry question but a math question, I will not use the fomula of density but set a proportion with one unknown:

  • 62.4 lb / 1 ft³ = x / 21 ft³

Solve for x:

  • x = 21 ft³ × 64 lb / ft³ = 1,310.4 lb.

So, rounding to the next integer, the water in the tank weighs 1,310 pounds, when it is full.

6 0
3 years ago
Read 2 more answers
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