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3 years ago

PLEASE HELP I genuinely want to understand so please explain

Mathematics

1 answer:

valkas [14]3 years ago

6 0

Answer:

You were correct

Step-by-step explanation:

Sometime the system will mess up or the people who made the question accidentally chose the wrong answer but you are correct

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The two spheres above have the same center one has a radius of 2 cm and the other one has a radius of 3 cm approximately how muc

Paladinen [302]

Answer:

79.6 cm^3

Step-by-step explanation:

The formula for the volume of a sphere is V = 4/3 πr³.

sphere A radius 2 cm so r[A] = 2 cm

sphere B radius 3 cm so r[B] = 3 cm

distance between the surfaces of the 2 spheres is 1 cm

To find volume of each sphere and the difference in volume:

pi r^2 * r - (1/3) pi r^2 * r = (2/3) pi r^3

8 0

3 years ago

HELP PLEASE ANSWER QUICK VERY EASY!!!

sleet_krkn [62]

Answer:

id say c. because its the closest number that corresponds with the graph.

5 0

3 years ago

there were 1248 students at the assembly. when it was over 614 kindergarteners, first, second graders stayed in the auditorium f

yKpoI14uk [10]

I can't help on this sorry math isn't my thing!!!!!!!!

3 0

3 years ago

The distance between two cities is 145 miles. A truck can cover this distance in 2. 5 hours. A car is 1. 5 times as fast as the

Sophie [7]

The relative speed of the car to the truck while moving towards each other is the sum of the speed of both vehicles.

The time it takes them to meet is 1 hour

Reasons:

The distance between the cities, d = 145 miles

The time it takes a truck to cover the distance = 2.5 hours

The speed of the car = 1.5 × Th speed of the truck

Required:

The time it takes them to meet if they are moving towards each other.

Solution:

$\displaystyle Speed = \mathbf{ \frac{Distance}{Time}}$

$\displaystyle Speed \ of \ the \ truck, \ v_{truck} = \frac{145 \ miles}{2.5 \ hours} = \mathbf{58 \ mph}$

Therefore;

The speed of the car, $v_{car}$ = 1.5 × 58 mph = 87 mph

At the time, t, the truck and the car meet, we have;

$\mathbf{v_{car} \times t + v_{truck} \times t = d}$

Which gives;

87 × t + 58 × t = 145

$\displaystyle t = \mathbf{\frac{145}{87 + 58}} = 1$

The time it takes them to meet, t = 1 hour

Learn more about distance, time and speed here:

brainly.com/question/17609639

8 0

2 years ago

A pentagon has two exterior angles that measure (3x)°, two exterior angles that measure (2x+22)°, and an exterior angle that mea

DiKsa [7]

Answer:

2(3x)+2(2x+22)+x+41=360°

Step-by-step explanation:

Sum of exterior angles of any polygon is 360°.

So if we add up all five exterior angles of the pentagon, we have

7 0

3 years ago