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3 years ago

Help me figure out how to simplify this please:

Mathematics

1 answer:

-BARSIC- [3]3 years ago

5 0

Think of it this way:
8^3 means you have 3 times 8 multiplied together (8*8*8)
Now this block is raised to the power of 7, so there are 7 blocks of 8*8*8 multiplied together.
How many 8s do we have? 7 blocks of 3s, 7*3=21
Thus n=21

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The distance between two cities is 180km. The distance was covered by a car at the rate of 50km/h, by a bus 45km/h, by a truck a

Gennadij [26K]

Answer:

The speed and time are directly proportional in that the higher the speed the lesser the time and vice versa.

The constant is the total distance which is 180 km

Step-by-step explanation:

Step one:

given data

The distance between the two cities is 180km

1.The distance was covered by a car at the rate of 50km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/50

time= 3.6 hours

2.The distance was covered by a bus 45km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/45

time= 4 hours

3.The distance was covered by a bicycle at 25km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/25

time= 7.2 hours

7 0

3 years ago

A rectangle has an area of 64 ft squared. If the length of the rectangle is x ft and the width of the rectangle is x to the 1/2

choli [55]

Answer:

I DONT KNOW BUT YOU HAVE TO CHECK OUT MY QUESTION NO OE CAN SOLVE IT I BET

Step-by-step explanation:

6 0

3 years ago

Are any of these equivalent to 3/8 ?<br> 2/7 <br> 8/3<br> 9/24<br> 5/18

Ad libitum [116K]

Answer:

9/24 is

Step-by-step explanation:

Yup

-BaconSoup the scientist LOL

7 0

3 years ago

Read 2 more answers

I need to know what 5+x=30

Virty [35]

Answer:

x=25

Step-by-step explanation:

all you do to find x is subtract 30 from 5 and you get 25 you double check by replacing x for 25 and there is your answer!

7 0

3 years ago

Which pairs of numbers in scientific notation shows one number that is about 20 times as great as the other number?

laiz [17]

Answer:

Option C, D, E

Step-by-step explanation:

To find : Which pairs of numbers in scientific notation shows one number that is about 20 times as great as the other number?

Solution :

We divide large number by smaller number to get the required answer,

A) $\frac{2.01\times 10^7}{4.25\times 10^6}=4.7294\approx 4$

B) $\frac{5.97\times 10^4}{3.12\times 10^3}=19.1346153846\approx 19$

C) $\frac{4.91\times 10^6}{5.09\times 10^3}=9365.4033\approx 9365$

D) $\frac{8.21\times 10^{-3}}{4.13\times 10^{-4}}=19.8789\approx 20$

E) $\frac{6.22 \times 10^{-7}}{2.94\times 10^{-8}}=21.156462585\approx 21$

Option C, D and E pairs of numbers in scientific notation shows one number that is about 20 times as great as the other number.

8 0

3 years ago