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3 years ago

I need some help please

Mathematics

1 answer:

Semmy [17]3 years ago

3 0

For a, you could use the volume of a sphere divided by two to solve for a dome (like when you cut a sphere in half).

For b, you could use the volume of a rectangular prism divided by three when solving for a rectangular pyramid.

This is because the volume for a rectangular prism is V=lwh, and for a rectangular prism the volume is V= (1/3)lwh

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Vanessa works 32 hours per week at her job. Her boss offers her a full time job (40 Hours per week) and a 2 dollar per hour rais

FinnZ [79.3K]

Answer:

$35.75 per hour

Step-by-step explanation:

In order to calculate this, we first need to calculate how much she made with her current hourly wage. We do this by multiplying the hours she worked by her current hourly wage plus her raise.

32 hours * (40+2) = $1,344

Now we subtract $200, since this is how much more she is making with her raise, and then we divide that amount by the 32 hours she is working per week.

(1,344 - 200) / 32 = $35.75 per hour

Finally, we can see that Vanessa's hourly wage before the raise was $35.75 per hour

8 0

3 years ago

Tins of paint are filled at the rate of 2m3 per minute.

alex41 [277]

Answer:

160,000 tins

Step-by-step explanation:

To find the number of tins, divide the fill rate by the volume per tin.

(2·(1000 L)/min)×(60 min)/(1 h)/(0.75 L/tin) = 160,000 tin/h

160,000 tins of paint can be filled in 1 hour.

_____

<em>Additional comment</em>

That's one tin every 22.5 milliseconds. It would be a feat of engineering to move that volume without splashing.

There are 60 minutes per hour. There are 1000 liters per cubic meter.

7 0

2 years ago

Marcus wants to decorate his box that is i the shape of a cube with a color. he decides to cover the entire box with red color p

olga2289 [7]

*see attached picture for the diagram of the box

Answer:

130cm²

Step-by-step explanation

The amount of red appear needed by Marcus to cover his box = Surface Area of the cube - Area of the circle.

Surface area of cube = 6s² (where s is the side length of the cube. s² therefore is S.A of 1 face of the cube)

Given that s = 5cm,

S.A of cube = 6s² = 6*5² = 150cm²

Area of circle = πr²;

Given that π = 3.14, and r = ½ of diameter of circle (i.e. ½ of side length of cube)

Area of circle = 3.14*(½*5)² = 3.14*(2.5)² = 3.14*6.25 =19.625

Amount of red paper needed = S.A of the cube - Area of the circle = 150cm² - 19.625cm² = 130.375cm² = 130cm²

3 0

3 years ago

What is 56% in simplest form as fraction

muminat

Answer:

14/25

Step-by-step explanation:

Convert 56% to fraction form: 56/100, and then simplify to 14/25

4 0

3 years ago

Read 2 more answers

Select the correct answer. A line each runs from point B through points A and C. First arc, centered at B, cuts line B A at J an

anastassius [24]

In order to make point D as the vertex in the construction as triangle ABC, the third arc should cross the second arc.

In Geometry, an arc can be defined as a trajectory that is generally formed when the distance from a given point has a fixed numerical value.

In order to make point D as the vertex in the construction as triangle ABC, you must ensure that the third arc crosses the second arc as illustrated in image attached below.

Read more on arc here: brainly.com/question/20594692

#SPJ1

6 0

2 years ago