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Aliun [14]
4 years ago
13

PLEASE HELP, I'LL MARK BRAINLIEST 3 QUESTIONS.... 36 POINTS!!! i'll help w/ any other subject or if u need anything i just need

to finish this test
Mathematics
1 answer:
Tomtit [17]4 years ago
3 0

Answer:

Step-by-step explanation:

What give me the question

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a regular hexagonal nut of side 1 cm and length 3 cm with a central hole of diameter 1 cm. 3 cm 1 cm 1 cm. Calculate the volume
Bogdan [553]

Answer:

  5.44 cm³

Step-by-step explanation:

The volume of the hexagonal nut can be found by multiplying the area of the end face by the length of the nut. The end face area is the difference between the area of the hexagon and the area of the hole.

The area of a hexagon with side length s is given by ...

  A = (3/2)√3·s²

For s=1 cm, the area is ...

  A = (3/2)√3(1 cm)² = (3/2)√3 cm²

__

The area of a circle is given by ...

  A = πr²

The radius of a circle with diameter 1 cm is 0.5 cm. Then the area of the hole is ...

  A = π(0.5 cm)² = 0.25π cm²

__

The volume is the face area multiplied by the length, so is ...

  V = Bh = ((3/2)√3 -0.25π)(3) . . . . . cm³

  V = (9/2)√3 -0.75π cm³ ≈ 5.44 cm³

The volume of the metal is about 5.44 cm³.

5 0
3 years ago
Write the recursive formula for the sequence a^n =2-5(n-1)
Zolol [24]
The formula is 2”6 hope I helped
3 0
3 years ago
Tommy, Joel, and Garrett shared a supreme pizza
pogonyaev

Answer:

1/8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The value of the expression -2 xy for x = -4.7 and y = 0.2 is _____.
sergeinik [125]

The value of the expression -2xy for x = -4.7 and y = 0.2 is 1.88. Thus option number 3 is correct.

<u>Solution:</u>

We have been given an expression that is -2xy and have been asked to find its value for the given values of x and y

The given values of x and y are -4.7 and 0.2 respectively.

To find the value of the expression for the given values of x and y we substitute the values of x and y in the given expression and solve it as follows:

Given expression = -2xy

\begin{array}{l}{=-2(-4.7)(0.2)} \\\\ {=9.4 \times 0.2} \\\\ {=1.88}\end{array}

Hence the option number 3 is correct.

4 0
3 years ago
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Exact real Value of accros (1/2)
kicyunya [14]

Answer:

0.5

Step-by-step explanation:

3 0
3 years ago
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