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dimulka [17.4K]
3 years ago
5

I NEED HELP PLS

Mathematics
1 answer:
Brut [27]3 years ago
6 0

Answer:

114.5 in³

Step-by-step explanation:

Volume of cone:

⅓ × 3.14 × 8² × 12

= 803.84 cm³

Volume of hemisphere:

⅔ × 3.14 × 8³

= 1071.786667 cm³

Total = 803.84 + 1071.786667

= 1875.626667 cm³

1 cm = 0.393701 inches

1 cm³ = 0.393701³ inches

Volume in in³:

1875.786667/0.393701³

= 114.4579471 in³

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Question 9 of 10 If two triangles are congruent, which of the following statements must be true? Check all that apply. A. The tr
Naily [24]

Answer:

ACD

Step-by-step explanation:

All statements are correct for two congruent trianglesStep-by-step explanation:If two triangles are congruent than the rules states thatTriangles are congruent when all corresponding sides and interior angles are congruent. The triangles will have the same shape and size, but one may be a mirror image of the other.As the fig shows two triangleΔ PQRΔ LMNAll three corresponding sides of triangle are congruentall three corresponding angles are congruentBoth triangle are of same sizeBoth are of same shapehence all the statements are CORRECT Keywords:Geometry

7 0
3 years ago
Consider the sequence of steps to solve the equation: 3(x - 4) + 5x 9x - 36
Zielflug [23.3K]

Answer:

Distributive Property

Step-by-step explanation:

You are distributing 3 to x and -4

3 0
3 years ago
The length of a rectangle is 3 1/6 cm longer than the width. The perimeter of the rectangle is 15 1/3 cm. What are the width and
Nikitich [7]

Answer:

The width of rectangle is  cm and length is  cm.

Step-by-step explanation:

Let,

Width of rectangle = w

Length of rectangle =

Perimeter of rectangle =  cm

Perimeter = 2(Length + Width)

Dividing both sides by 4

Width of rectangle =

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Keywords: rectangle, perimeter

6 0
3 years ago
Find –5(10)(−4). this is for a assignment that needs to be done by tomorrow.
34kurt

Answer:

200

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

-5(10)(-4)

<u>Step 2: Evaluate</u>

  1. Multiply:                                                                                                             -5(10)(-4) = -50(-4)
  2. Multiply:                                                                                                              -5(10)(-4) = 200
4 0
3 years ago
help The screen in a theatre is 22 ft high and is positioned 10 ft above the floor, which is flat. The first row of seats is 7 f
Stella [2.4K]
 <span>(a.) 
Let's say α is the angle that subtends from the top of the screen to horizontal eye-level. 
Let β be the angle that subtends from the bottom of the screen to horizontal eye-level. 

tanα = (22 + 10 - 4) / x = 28/x 
α = arctan(28/x) 

tanβ = (10 - 4) / x = 6/x 
β = arctan(6/x) 

Ɵ = α - β 
Ɵ = arctan(28/x) - arctan(6/x) 

(b.) 
tanƟ = tan(α - β) = (tanα - tanβ) / (1 + tanα tanβ) 
tanƟ = (28/x - 6/x) / [1 + (28/x)(6/x)] 
tanƟ = (22/x) / [1 + (168/x²)] 
tanƟ = 22x / (x² + 168) 
Ɵ = arctan[22x / (x² + 168)]</span>
4 0
3 years ago
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