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erastovalidia [21]
3 years ago
14

Which expression is equalivent to 5(n-9)

Mathematics
2 answers:
ioda3 years ago
8 0
5(n-9) do 5 times n, then 5 times -9 which is -45 then your left with 5n-45.
krek1111 [17]3 years ago
5 0
Multiply 5 inside (n-9)
then your result would be 5n-45
that would be the answer
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An athlete training for the Olympics women's each lap for a 4 lap race in the following times: 54.73, 54.56, and 54.54 seconds.
natita [175]

Answer:

The total time it takes her to swim the four laps is 3.65 minutes.

Step-by-step explanation:

Here, according to the given data:

The time taken to complete 1st lap =  54.73 seconds

The time taken to complete 2nd lap =  54.56 seconds

The time taken to complete 3rd lap =  54.32 seconds

The time taken to complete 4th lap =  54.54 seconds

Now, the TOTAL TIME taken to swim all 4 laps  = SUM OF ALL 4 TIMES

= (54.73  + 54.56 + 54.32 + 54.54) seconds

= 219.35 Seconds

Now, 60 seconds = 1 minute

⇒ 1 seconds  = 1/60 minute

⇒219.35 seconds = 219.27 x (1/60) minutes = 3.6558  minutes

Hence, the total time it takes her to swim the four laps is 3.65 minutes.

4 0
4 years ago
The sum of the reciprocals of 2 consecutive integers is 32/132
lisabon 2012 [21]
SOLUTION:

x + x + 1 = 132 / 32

2x + 1 = 33 / 8

2x = 33 / 8 - 1

2x = 25 / 8

x = 25 / 8 / 2

x = 25 / 16

The first number is 25 / 16. Therefore, as the second number is consecutive we simply add 1 to the first number to achieve the second number as displayed below:

Second number:

= x + 1

= 25 / 16 + 1

= 36 / 16

= 9 / 4

ANSWER:

Therefore, the first number is 25 / 16 and the second number is 9 / 4.

Hope this helps! :)
4 0
3 years ago
I HAVE 2 MORE QUESTIONS AFTER THIS 20 POINTSSS!
ioda

Answer:

Step-by-step explanation:

you have to do 49000 - 8200 which is 40800, and in scientific notation, that is 4.08 * 10^4

3 0
3 years ago
Read 2 more answers
Someone please help!!!
djyliett [7]
#3.  the probability of spinning "rock" is 25% or 1/4  so we can use this probability to predict the number of times we would expect to get "rock" in 80 spins as follows:
25% of 80 = .25(80) = 20  So how likely is it we spin 20 'rock' out of 80 spins?  At 25%, not very likely..

#4. 
A.  True
B.  True
C.  False, the theoretical probability of make make using the spinner is 
\frac{3}{4} ( \frac{3}{4)} = \frac{9}{16} or about 56%
5 0
3 years ago
Which graph represents the solution set of the equation 3y - x - 9 = 0?​
xeze [42]

Slope=  

2.000

0.667

​  

=0.333

x−intercept=  

−1

9

​  

=−9.00000

y−intercept=  

3

9

​  

=3

4 0
3 years ago
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