Find the possible value or values of y in the quadratic equation 4 – 4y – y2 = 0.
A. y = 2
B. y = –3, y = –1
C. y = –4, y = 1
D. y = –2 + 2 2, y = 2 2 2

The possible value or values of y in the quadratic equation 4 – 4y – y2 = 0 is y = –2 + 2 2, [ y = 2 2 2. Solution: y = -(-4) ± ((-4)² - 4(4)(-1)) 2(-1); y = 4 ± (16 + 16) -2; y = 4 ± (32) -2; y = 4 ± 4 (2)-2; y = 4 + 4 (2) or y = 4 - 4 (2)-2.

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Asked 12/11/2017 4:23:01 PM

Updated 222 days ago|12/19/2020 8:10:20 AM

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The possible value or values of y in the quadratic equation 4 – 4y – y2 = 0 is y = –2 + 2 2, [ y = 2 2 2. Solution: y = -(-4) ± ((-4)² - 4(4)(-1)) 2(-1); y = 4 ± (16 + 16) -2; y = 4 ± (32) -2; y = 4 ± 4 (2)-2; y = 4 + 4 (2) or y = 4 - 4 (2)-2.

Added 222 days ago|12/19/2020 8:10:20 AM

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A cylindrical tank has a radius of 15 feet and a height of 45 feet. How many cubic feet of water can the tank hold?
A. 675 cu. ft.
B. 127,170 cu. ft.
C. 15,896.25 cu. ft.
D. 31,792.5 cu. ft.

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Updated 6/24/2019 1:09:52 AM

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Added 6/24/2019 1:09:41 AM

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Deleted by maydj [6/24/2019 1:09:46 AM]

A cylindrical tank has a radius of 15 feet and a height of 45 feet. Volume of cylinder = pi *r^2*h , volume =3.14*15^2*45 , volume = 31,792.5 cu. ft.

Added 6/24/2019 1:09:52 AM

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What's the area of a square computer screen with 21-inch sides?
A. 220 sq. in.
B. 42 sq. in.
C. 441 sq. in.
D. 84 sq. in.

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Updated 7/7/2019 2:12:17 AM

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Added 7/7/2019 2:12:08 AM

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Deleted by maydj [7/7/2019 2:12:10 AM]

The area of a square computer screen with 21-inch sides is 441 sq. in.

A = a² = 21² = 21 * 21 = 441

A = a² = 21² = 21 * 21 = 441

Added 7/7/2019 2:12:17 AM

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Find the circumference of a circle if the area is 300 square centimeters.
A. 9.77 cm
B. 56.25 cm
C. 61.38 cm
D. 84.74 cm

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Updated 7/7/2019 2:12:48 AM

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The circumference of a circle if the area is 300 square centimeters.

Area = pi*r^2 = 3.14*r^2 , area = 300 , r^2 = 300/3.14 = 95.5414 , r = 9.77cm , circumference =2 *pi*r =2*3.14*9.77 = 61.38 cm.

Area = pi*r^2 = 3.14*r^2 , area = 300 , r^2 = 300/3.14 = 95.5414 , r = 9.77cm , circumference =2 *pi*r =2*3.14*9.77 = 61.38 cm.

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Why did the Portuguese trading empire fall apart by 1500?
A. Spain conquered Portugal.
B. England conquered Portugal.
C. Portugal was a small country with few resources.
D. Portugal suffered through a civil war.

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Updated 12/5/2017 1:35:08 PM

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The Portuguese trading empire fell apart by 1500 because Spain conquered Portugal.

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Which of the following was an advantage held by imperialist powers over native peoples in the 1800s?
A. Alliances among well-developed nations
B. Better raw materials
C. Native people rejecting self-rule
D. Better transportation

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Updated 3/7/2020 2:30:06 PM

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Better transportation was an advantage held by imperialist powers over native peoples in the 1800s.

Added 3/7/2020 2:30:06 PM

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