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2 years ago

Brainliest ! 40 points , pls answer all or don't answer

Mathematics

2 answers:

MAVERICK [17]2 years ago

6 0

Answer:

The answer to your question is below

Step-by-step explanation:

1.- Find the volume of the cylinder

Data

diameter = 9 cm

radius = 4.5 cm

height = 15 cm

Formula

V = πr²h

V = π(4.5)²(15)

V = 303.75π This is te answer for the volume in terms of π

= 952.78 cm³

2.- Find the volume of the cylinder

height = 40 yd

radius = 12 yd

Formula

V = πr²h

V = π(12)²(40)

V = 5760π This is te answer for the volume in terms of π

= 18086.4 cm³

3.- What is the height .......

height = q

side length = r

4.- Volume of a pyramid

Volume = Area of the base x height

Area of the base = 11 x 11 = 121 cm²

Volume = 121 x 18

Volume = 2178 cm³

rodikova [14]2 years ago

4 0

Answer:

1. 953.775 cm³

2. 18,086.4 yd³

3. height: q ; side: r

4. 726 cm³

Step-by-step explanation:

1. Volume = pi × r² × h

= 3.14 × (9/2)² × 15

= 953.775 cm³

2. Volume = pi × r² × h

= 3.14 × 12² × 40

= 18086.4 yd³

3. height: q ; side: r

4. Volume = ⅓ base area × height

= ⅓ × 11² × 18

= 726 cm³

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Which of the following is the best estimate of the direction of the given vector?

notka56 [123]

Answer:

The direction of the given vector is 45° N of W

Step-by-step explanation:

* Lets revise the four directions with the four quadrants

- The four directions are:

# North which represented by the positive part of y-axis

# South which represented by the negative part of y-axis

# East which represented by the positive part of x-axis

# West which represented by the negative part of y-axis

∴ The first quadrant is between the East and the North

∴ The second quadrant is between the West and the North

∴ The third quadrant is between the West and the South

∴ The fourth quadrant is between the East and the South

* The direction of any vector is tan Ф, where Ф is the angle between

the vector and the x-axis, then:

- The direction of North of East is 45° ⇒ first quadrant

- The direction of North of West is 45° ⇒ second quadrant

- The direction of South of West is 45° ⇒ third quadrant

- The direction of South of East is 45° ⇒ fourth quadrant

* Now lets solve the problem

∵ The direction of the vector is between the North and the West

(its vertex in the second quadrant)

∴ Its direction is 45° North of West

* The direction of the given vector is 45° N of W

7 0

2 years ago

Write expression in words: 6/y

Vika [28.1K]

Answer: y divided by 6

Step-by-step explanation:

/ is a division sign

4 0

2 years ago

My metric bolt measures .780 with calipers over the threads what size is it

attashe74 [19]

Bolts are usually classified in terms of two types of measurements: the metric system and the imperial system. In calipers, the metric system is in units of millimeters, while the imperial system is in units of inches. For example, when a bolt is sized as 12 × 1.25 in the metric system, that means the bolt thread diameter measures 12 mm, and the thread pitch measures 1.25 mm.

So, if your metric bolt measures 0.78 over the threads, that means that the size of the bolt is 0.78 mm in thread pitch. The attached picture shows how you measure the thread pitch.