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4 years ago

Which of the following are aspects of the building and construction trades?

Mathematics

1 answer:

Tom [10]4 years ago

4 0

Carpentry
Plumbing
Lawn care
Masonry
Electrical work

Explanation:

All of the mentioned points are the aspects of building and construction trades.
Carpenter performs carpentry and deals mainly with wood such as making of wooden cabinets, furniture etc.
Electrician deals with electric work such as electrical wiring of the buildings and related equipment.
Plumber deals with installing and maintaining drainage system or water availability.
Mason are skilled in brick and blocklaying, concrete finishing etc.

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PLEASE HELP!!!!!

Katena32 [7]

Answer:6018

Step-by-step explanation:

Given Sequence

$-282-266-250-234.....$

It represent an A.P. with

first term $a=-282$

common difference $d=16$

So sum of 51 term

$S_n=\frac{n}{2}[2a+(n-1)d]$

$S_{51}=\frac{51}{2}\times [2\times (-282)+(51-1)16]$

$S_{51}=\frac{51}{2}\times [-564+800]$

$S_{51}=\frac{51}{2}\times [236]$

$S_{51}=51\times 118$

$S_{51}=6018$

7 0

3 years ago

The distance around a circular pool is 39.25 m. How does the lifeguard have to walk from the edge of the pool to the centre of t

Marysya12 [62]

Answer:

d = 6.246 m

Step-by-step explanation:

Given that,

The distance around a circular pool is 39.25 m.

We need to find how does the lifeguard have to walk from the edge of the pool to the centre of the pool. It means we need to find the radius r of the circle.

ATQ,

Circumference = 2πr = 39.25 m

r is radius

$r=\dfrac{39.25 }{2\pi}\\\\r=6.246\ m$

So, the required distance is 6.246 m.

4 0

3 years ago

Please help Fast! Need answer by 1:00 pm

Aleks [24]

Answer is 30

Multiply top of bottom of each fraction to get 30 on the bottom

So 2m/5•6 and 2m/6•5

3 0

3 years ago

A DJ has a total of 1075 dance and rock songs on her system. The dance selection is 4 times the size of the rock selection. Writ

KIM [24]

Answer:

Write a system of equations to represent the situation.

d: Number of dance songs

r: Number of rock songs

d + r = 1075

d = 4 * r

4 0

3 years ago

Sally is filling glass containers in the shape of cylinders with different colors of sand. Each cylinder has a radius of 4 inche

ryzh [129]

Part A.
We are given the total volume of the amount of sand she will want to fill
we are also given the shape and dimensions of the cylinders
Total volume of the sand = 1,000
Cylinder= radius 4 in, and height 8 in
the volume of a cylinder is V=πr^2h
We will solve for the volume of the cylinders
V=πr^2hV=π(4)^2*(10)
V = π (16) * (10)
V = π 160
The volume of the cylinders she wants to fill is 502.65 in^3
How many cylinders will she need
Well,
1000/502.65 ≈ 1.98
She will need two cylinder cans to fill with the 1,000 in^3 of sand

Part B.
To see if this is true, we find the half of the original cylinder's radius and height then solve for the volume and compare
V=πr^2h
The height and radius of the original cylinders were 4 r and 8h
we will find half of that which will be : 2 r and 4 h
Now solve for the volume V=πr^2h
V=π(2)^2* (4)
V=π (4)*(4)
V = π 16
V ≈ 50.26 inches ^3
The volume of the original cylinders was 502.65 in^3 and the volume of the new cylinders is 50.26 in^3... Clearly the volume of the new cylinders is NOT half of the original. Sally is not correct!

Hope this helps :)

7 0

3 years ago