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VashaNatasha [74]
3 years ago
11

Guys what is the Diameter of 40 Inches

Mathematics
1 answer:
frozen [14]3 years ago
7 0
80 inches, diameter is twice radius
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2x = 15 + x <br> Solve for X
Ganezh [65]
-x on both sides to get
x=15
3 0
3 years ago
A jar is full of 100 coins. All of the coins are either nickels or dimes.
Elza [17]

Answer:

73 nickels, 27 dimes

Step-by-step explanation:

x+y=100

5x+10y=635

x=100-y

5(100-y)+10y=635

500-5y+10y=635

500+5y=635

5y=135

y=27

5x+10(27)=635

5x+270=635

5x=365

73

73+27=100

5 0
2 years ago
A soccer ball is kicked toward the goal. The height of the ball is modeled by the function h(t) = −16t2 + 48t where t equals the
Stolb23 [73]

Answer:

  • t = 1.5; it takes 1.5 seconds to reach the maximum height and 3 seconds to fall back to the ground.

Explanation:

<u>1) Explanation of the model:</u>

  • Given: h(t) = -16t² + 48t

  • This is a quadratic function, so the height is modeled by a patabola.

  • This means that it has a vertex which is the minimum or maximu, height. Since the coefficient of the leading (quadratic) term is negative, the parabola opens downward and the vertex is the maximum height of the soccer ball.

<u>2) Axis of symmetry:</u>

  • The axis of symmetry of a parabola is the vertical line that passes through the vertex.

  • In the general form of the parabola, ax² + bx + c, the axis of symmetry is given by x = -b/(2a)

  • In our model a = - 16, and b = 48, so you get: t = - ( 48) / ( 2 × (-16) ) = 1.5

<u>Conclusion</u>: since t = 1.5 is the axys of symmetry, it means that at t = 1.5 the ball reachs its maximum height and that it will take the same additional time to fall back to the ground, whic is a tolal of  1. 5 s + 1.5 s = 3.0 s.

Answer: t = 1.5; it takes 1.5 seconds to reach the maximum height and 3 seconds to fall back to the ground.

8 0
3 years ago
The volume of a pyramid with a square base where the area of the base is 8.7m^2 and the height is 10
MrMuchimi

Answer:

  29 m³

Step-by-step explanation:

The applicable formula is ...

  V = (1/3)Bh

Assuming the height is 10 m, the volume is ...

  V = (1/3)(8.7 m²)(10 m) = 29 m³

_____

The shape of the base is irrelevant.

5 0
3 years ago
The figure above shows a square inscribed in a rectangle.
slava [35]

Step-by-step explanation:

first u must find the area of the rectangle.after that,find the area of the square.then you have tu subtract it so that u can get the orange area.

8 0
3 years ago
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