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VMariaS [17]
3 years ago
10

Y= -2x-9 in standard form

Mathematics
1 answer:
Andrew [12]3 years ago
3 0

standard form for a linear equation means

• all coefficients must be integers, no fractions

• only the constant on the right-hand-side

• all variables on the left-hand-side, sorted

• "x" must not have a negative coefficient


2x +  y = -9.

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A farmer plans to build the small silo shown to store chicken feed. What is the circumference of the base of the silo if it can
mamaluj [8]

Answer:

  4√(3π) ft ≈ 12.28 ft

Step-by-step explanation:

The formulas for volume of a cone and a cylinder can be used to find the radius of the silo. Then the formula for the circumference of a circle can be used to find the circumference.

__

Relevant formulas are ...

  • V = πr²h . . . . . volume, cylinder with radius r, height h
  • V = 1/3πr²h . . . . volume, cone with radius r, height h
  • C = 2πr . . . . . . . . circumference of a circle with radius r

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<h3>radius from volume</h3>

The total volume of the silo is the sum of the volumes of a cylinder of height (15 -6) = 9 ft, and a cone of height 6 ft. Both have the same radius: r. The total volume is given as 132 ft³.

  V = πr²h + 1/3πr²h' . . . . . . h = cylinder height, h' = cone height

  132 ft³ =  πr²(9 ft +1/3(6 ft)) = πr²(11 ft)

  r² = 132 ft³/(11π ft) = 12/π ft²

  r = √(12/π) ft = 2√(3/π) ft

<h3>circumference from radius</h3>

Then the circumference of the silo is ...

  C = 2πr = 2π(2√(3/π)) ft = 4√(3π) ft ≈ 12.28 ft

The circumference of the base of the silo is 4√(3π), about 12.28 feet.

8 0
1 year ago
For this problem, assume that you are to pick 3 cars from the motor pool, which contains 7 subcompact cars, 4 compact cars, and
Jet001 [13]

you make it 20 different ways


4 0
2 years ago
A car can travel 65 miles in 1 hour. If the car continues at that speed for 12 hours, how many miles will it travel? (please sho
seropon [69]
A car can travel 65 miles per hour.

Over 12 hours, it will travel 780 miles.

12 * 65 = 780
3 0
3 years ago
Read 2 more answers
Solve 5/8-17/8 and show work
prisoha [69]

5/8 - 17/8

combine : 5-17 / 8

subtract : 5 - 7 = -12

-12/8

apply fraction rule ( -a/b = - a/b) : - 12/8

cancel common factor 4

answer : - 3/2

I hope this helped

4 0
3 years ago
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