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dsp73
4 years ago
13

Describe how a model can help you round a decimal.

Mathematics
1 answer:
Katarina [22]4 years ago
6 0

Answer:

you dint put up the pictures so not sure

Step-by-step explanation:

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The exclamation point (!) on a billboard consists of a circle sector and circle. The radius of the sector is 9 ft, and the radiu
harina [27]

Answer:

  24.0 square feet

Step-by-step explanation:

The area of the sector is given by ...

  A = (1/2)r²θ . . . . . where θ is the angle in radians

The area of the circle is the same, with θ=2π, so is ...

  A = πr²

__

In this problem, the area of the sector is ...

  A = (1/2)(9 ft)²(24π/180) = 27π/5 ft² ≈ 16.9646 ft²

The area of the circle is ...

  A = π(1.5 ft)² = 9π/4 ft² ≈ 7.0686 ft²

Then the total area of the exclamation point is ...

  16.9646 +7.0686 ≈ 24.0 . . . ft²

The area is about 24.0 square feet.

8 0
3 years ago
6 pounds how much kilograms
ohaa [14]
<span>2.72155422 Kilograms</span>
4 0
4 years ago
Read 2 more answers
Find the missing side or angle. Round to the nearest tenth. C=53° B= 80° a=2 b=[ ? ]​
Degger [83]

9514 1404 393

Answer:

  b ≈ 2.7

Step-by-step explanation:

The missing angle A is ...

  A = 180° -53° -80° = 47°

The law of sines tells you ...

  b/sin(B) = a/sin(A)

  b = sin(80°)×2/sin(47°) ≈ 2.6931

Side b is about 2.7 units.

5 0
3 years ago
Read 2 more answers
Find the perimeter of △CDE. Round your answer to the nearest hundredth. The perimeter is about units.
Troyanec [42]

Answer: 9.66\ units

Step-by-step explanation:

The triangle CDE is shown in the image attached.

The formula for calculate the distance between two points is:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Then, we can calculate the lenght of each side of the triangle:

d_{CD}=\sqrt{(4-4)^2+(-5-(-1))^2}=4\ units\\\\d_{DE}=\sqrt{(4-2)^2+(-5-(-3))^2}=2.828\ units\\\\d_{CE}=\sqrt{(2-4)^2+(-3-(-1))^2}=2.828\ units

Therefore, the perimeter is:

P=4\ units+ 2.828\ units+2.828\ units=9.66\ units

8 0
3 years ago
If f(x)=-5+1 and g(x)=x^3, what is (g°f)(0)
Elena-2011 [213]
(g o f)(x)=g(f(x))
so
(g o f)(0)=g(f(0))
find f(0) and subsitute for x in g(x)

I'm assuming you mean f(x)=-5x+1
f(0)=-5(0)+1=1

g(f(0))=g(1)=1^3=1

(g o f)(0)=1
7 0
3 years ago
Read 2 more answers
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