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3 years ago

Which expression is equivalent to 4a^2/2b

Mathematics

1 answer:

Slav-nsk [51]3 years ago

5 0

12a^2 / 6b. This one is multiplied by 3/3 which equals one which keeps it the same.

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Two less than a number cubed múltiple choices 2−x³ x² - 3 x³- 2 3-x²

ella [17]

The first one (2-x^3) is the correct one

5 0

2 years ago

Twelve athletes are running a race. A gold medal is to be given to the winner, a silver medal is to be given to the second-place

kykrilka [37]

Answer:

1320

Step-by-step explanation:

We are given that

Total number of athelets are running in race=12

Total number of medals =3

We have to find the total possible number of ways can the 3 medals be distributed.

Total number of ways for choosen gold medal=12

Number of ways for choosen silver medal=11

Number of ways for choosen Bronze medal=10

Total number of possible ways= $12\times 11\times 10=1320$

Hence, total number of possible ways in which 3 medals be distributed=1320

8 0

4 years ago

A go-cart racetrack has 100-meter straightaways and semicircular ends with diameters of 40 meters. Calculate the average speed i

emmainna [20.7K]

Answer:

Average speed of go cart is 217.07 meters per minute.

Step-by-step explanation:

We are given the following in the question:

Length of straightway racetrack = 100 m

Diameter of semicircular end = 40 m

Radius =

$r = \dfrac{d}{2} = \dfrac{40}{2} = 20\text{ m}$

Perimeter of racetrack =

Perimeter of semicircle + 2(Length of straightway) + Perimeter of semicircle

$=\pi r + 2(100) + \pi r\\=2\pi r + 2(200)\\=(2\times 3.14\times 20) + 200\\=325.6\text{ m}$

Speed =

$s = \dfrac{\text{Distance}}{\text{Time}}\\\\s = \dfrac{4\times \text{Perimeter of track}}{6}\\\\s = \dfrac{4\times 325.6}{6}\\\\s = 217.06\text{ meter per minute}$

Thus, average speed of go cart is 217.07 meters per minute.

4 0

3 years ago

What are the right answers and how do you find it?

IceJOKER [234]

This is the correct answers

8 0

4 years ago

How do you write 0.0036 in scientific notation

Diano4ka-milaya [45]

3.6 * 10^(-3) is the scientific notation

5 0

3 years ago

Read 2 more answers