Solve pls brainliest! the first one to answer it gets the brainliest

Alexis wants to make a paperweight at pottery class. He designs a pyramid-like mode l with a base area of 100 square centimeters

olga55 [171]

Answer:

$\frac{3}{2}$ g/cm²

Step-by-step explanation:

First, we need to find the volume of the prism. The volume of a square pyramid is V = Bh/3

B = 100 cm²

h = 6 cm

V = 100 cm² * 6 cm /3

V = 600 cm³ /3

V = 200 cm³

Next, we need to solve for the density based on the desired volume and mass.

m = mass = 300 g

V = volume

density = m/V

density = 300 g / 200 cm³

density = 3/2 g/cm³

The lowest possible density of the material to make the paperweight would be $\frac{3}{2}$ g/cm²

4 0

2 years ago

A line is drawn through (–4, 3) and (4, 3). Which describes whether or not the line represents a direct variation?

bija089 [108]

The line does not represent a direct variation because it does not go through the origin.

4 0

3 years ago

Read 2 more answers

Use the following information to complete parts I, II, and III. 1 hour=3600 seconds

icang [17]

Answer:

I) There are $8.760\times 10^3$ hours in 1 year.

II) The exact number of hours in one year is $8.76582\times 10^3$ hours.

Step-by-step explanation:

Given : 1 hour=3600 seconds

1 year = 31556952 seconds.

To find :

I) Use scientific notation to estimate the number of hours in one year.

1 day = 24 hours

1 year = 365 days

So, number of hours in one year is given by,

$n=24\times 365$

$n=8760$

In scientific notation,

$8760=8.760\times 10^3$

So, there are $8.760\times 10^3$ hours in 1 year.

II) 1 year = 31556952 seconds.

1 hour = 3600 seconds

In one year the number of hour is given by,

$n=\frac{31556952}{3600}$

$n=8765.82$

In scientific notation,

$8765.82=8.76582\times 10^3$

So, the exact number of hours in one year is $8.76582\times 10^3$ hours.

III) In two or more complete sentences, compare your answers to parts I and II. In your comparison, discuss similarities and differences.

The exact numbers of hours using 365 days is 8760 which is written as $8.760\times 10^3$ in scientific notation but using the given data we get $8.76582\times 10^3$ hours.

Comparing these answers the first one has only 3 significant figures and the second answer has six significant figures.

If we round these we get $8.8\times 10^3$ hours which has two significant numbers.

8 0

3 years ago

FOR BRAINLIEST ANSWER THIS ASAP

mel-nik [20]

Answer:

-3x + y = -14

Step-by-step explanation:

m = 3/1 = 3

1 = 15 + b

b = -14

Y = 3x - 14

-3x + y = -14

5 0

2 years ago

A rectangular floor is 7 yards long and 3 yards wide. what is the area of the floor in square feet? be sure to include the corre

mario62 [17]

There are a couple ways to do this, but basically you need to convert the units.

7 yards x 3 ft/yard = 21 feet 
4 yards x 3 ft/yard = 12 feet 
So the area (in sq. ft) will be: 
21 x 12 
= 252 sq. ft. 

Alternatively, you can figure the area in square *yards* and then multiply by 9 sq. ft per sq. yard. 
7 yards x 4 yards x 9 sq. ft/sq. yard 
= 252 sq. ft.

hope this helps :)

4 0

3 years ago