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Slav-nsk [51]
3 years ago
12

PLEASE ANSWER QUICKLY!!

Mathematics
1 answer:
Masja [62]3 years ago
5 0

Answer:

224

Step-by-step explanation:

1st Digit - 9 (1 way)

2nd Digit - 2, 3, 5, 7 (4 ways)

3rd Digit - (10-2) ways

4th Digit - (10-3) ways

Therefore, the number of ways are 1 × 4 × 8 × 7

= 224 ways

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The fastest elevator in the burj khalifa can travel 330 feet in just 10 seconds. How far does the elevator travel in 11 seconds?
Hoochie [10]

Answer:

363 feet

Step-by-step explanation:

we know that

The fastest elevator can travel 330 feet in just 10 seconds

so

using proportion

Find out how far does the elevator travel in 11 seconds

Let

x ---> the distance traveled in 11 seconds

\frac{330}{10}\frac{ft}{sec} =\frac{x}{11}\frac{ft}{sec}\\\\x=330(11)/10\\\\x= 363\ ft

7 0
3 years ago
This table shows values represented by an exponential function.
Bad White [126]

Answer:

a = 2 , f(2)=9

b = 4 , f(4)=64

And replacing the data into the average rate formula we got:

m = \frac{64-9}{4-2}= 27.5

And then the best answer for this case would be:

C. 27.5

Step-by-step explanation:

For this cae we know that the average rate of change of a function is given by this general expresion:

m = \frac{f(b) -f(a)}{b-a}

For this special case from the info of the table we have:

a = 2 , f(2)=9

b = 4 , f(4)=64

And replacing the data into the average rate formula we got:

m = \frac{64-9}{4-2}= 27.5

And then the best answer for this case would be:

C. 27.5

7 0
3 years ago
Please help me with question 12 :(
Nikitich [7]

Answer:

30

Step-by-step explanation:


3 0
3 years ago
Pls help me figure this out
hodyreva [135]

Answer:

C. \frac{27}{225}=\frac{b}{100}

Step-by-step explanation:

To find the number of black ribbons one would have subtract the amount of red ribbons from the total number of ribbons. Then one would have to express it as a proportion. Part over whole equals percent over 100. The number of black ribbons over total ribbons equals "b" over 100.

8 0
3 years ago
A number added to one third of itself equals 12 . what is the number​
Drupady [299]

Answer:

9

Step-by-step explanation:

x+1/3x=12

(3x+1x)/3=12

4x/3=12

4x=12×3

4x=36

x=36/4

x=9

8 0
3 years ago
Read 2 more answers
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