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creativ13 [48]
3 years ago
8

Evaluate the expression m + (3n - 5)2 when m = 6 and n = 4. m+ (3n - 5)2 = ? A + (3 ? -5)

Mathematics
1 answer:
vladimir1956 [14]3 years ago
4 0

Answer:

20

Step-by-step explanation:

substitute first to get:

6 + (3·4 - 5)2

multiply 3 and 4 to get 12:

6 + (12 - 5)2

subtract 12 and 5 to get 7:

6 + 7(2)

multiply 7 and 2 to get 14

6 + 14 = 20

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3 years ago
Jensen has an above ground pool in the shape of a regular octagon. Opposite sides are 25 feet apart and each side is 10.4 feet l
bija089 [108]

Answer:

<u>Given</u>: base = 10.4ft, height = 12.5

Area of octagon = 8(1/2 × b × h)

  • 8(1/2 × 10.4 × 12.5)
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Volume of pool = 520ft² × 3ft

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Now, 1 cubic ft takes 7.5 gallons to fill.

Therefore, 1560 cubic ft takes,

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So, <u>Correct choice</u> - [D] 11,700.

6 0
3 years ago
Find the area to the nearest square foot of the shaded region below, consisting of a square with a circle cut out of it. Use 3.1
NeTakaya

Answer:

22 square feet

Step-by-step explanation:

Area of shaded region = Area of square - Area of circle. The diameter of the circle is also the length of the side of the square as the circumference of the circle is on the circumference of the square.

Area of circle = 3.14 × r × r

r = 10 ÷ 2

= 5

Area of circle = 3.14 × 5 × 5

= 78.5

Area of square = length × length

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Area of shaded region = Square - Circle

= 100 - 78.5

= 21.5

= 22 (to the nearest square foot)

I hope this helps :)

7 0
3 years ago
A solid cylinder has a radius of 4 cm and a length of 8 cm is melted down and recast in a solid cube find the dimension of the c
zhannawk [14.2K]

Answer:

7.37108cmx7.37108cmx7.37108cm

Step-by-step explanation:

Find the volume of the cylinder then take the cube route of that. You should end up with ~7.38108cm which is the length, width, and height of your cube. The volume is 402.12386cm cubed.

5 0
3 years ago
Read 2 more answers
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