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3 years ago

Which expression represents the perimeter of the rectangle above?

Mathematics

1 answer:

Arisa [49]3 years ago

7 0

Answer:

12x-8

Step-by-step explanation:

Added both equations and used PEMDAS to combine all equations

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PLEASE ANSWER THIS . Goran's company makes solid balls out of scrap metal for various industrial uses. For one project, he must

Ainat [17]

Cost of aluminum required to make a ball of radius 7.5 inches is $ 161.71

<h3>Solution:</h3>

Given that

Goran's company makes solid balls out of scrap metal for various industrial uses.

For one project, he must make aluminum balls that have a radius of 7.5 inches.

Cost of aluminum = $0.12 per cubic inches

Need to determine cost of aluminum to make one ball.

Lets first calculate the volume of one ball

As shape of the ball is sphere , we can use volume of sphere formula

$\text {Volume of ball }=\text { Volume of sphere }=\frac{4}{3} \pi r^{3}$

Where "r" is the raius of ball

Given that radius of required ball = 7.5 inches

$\text { So, volume of ball of radius } 7.5 \text { inches }=\frac{4}{3} \pi \times 7.5^{3}$

$=\frac{4}{3} \times 3.14 \times 321.875=1347.5833 \text { cubic inches }$

So quantity of aluminum required is same as volume of ball = 1347.5833 cubic inches

Cost of aluminum for 1 cubic inch = $0.12

So cost of aluminum required to make a ball of aluminium of 1347.5833 cubic inches is given as:

$=0.12 \times 1347.5833=\$ 161.71$

8 0

3 years ago

What is the slope of the line through (3,2) and (-3,4)?

NISA [10]

Answer:

slope = - $\frac{1}{3}$

Step-by-step explanation:

calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (3, 2 ) and (x₂, y₂ ) = (- 3, 4 )

m = $\frac{4-2}{-3-3}$ = $\frac{2}{-6}$ = - $\frac{1}{3}$

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2 years ago

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Someone help me with C and D

torisob [31]

The answer for C is 35 as output. The answer for D is 6 as input. Hope it help!

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4 years ago

The school bus has 18 rows of seats. There are 4 students in each row. Each student has 3 books to bring home. How many students

dimaraw [331]

Answer:

Step-by-step explanation:

*The part about how many books per student is irrelevant to the question*

All you need to do is multiply 18 rows by 4 students per row.

18 * 4 = 72 total students on bus

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3 years ago

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Hazel traveled 796 meters by foot. She traveled 3,486 meters by car and 56,975 meters by hot air balloon. How many meters did Ha

Marina CMI [18]

Answer:

61,257

Step-by-step explanation:

796+56,975+3,486

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3 years ago

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