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Korvikt [17]
3 years ago
8

Can anyone help me with 15a b c

Mathematics
1 answer:
Ilya [14]3 years ago
3 0
The 3r would be the independent variable and m=30 is the dependent variable. Double check the answer though.
You might be interested in
Consider the expressions 4t+t and 1t+4t .
algol [13]
So the full equation would be

4(3)+3 and 1(3)+4(3)

12+3 and 3+12

15 and 15

So your answer is 15 for both problems

Hope this helped. Have a great day!
5 0
4 years ago
tamara has completed 60% of her practice time for the track meet. If she is expected to practice for 18h, how long has she alrea
anyanavicka [17]

Answer:

10h and 48min

Step-by-step explanation:

60*18=1080

1080/100=10.8

so 10.8h which means 10 hours and 48 min

4 0
3 years ago
Yes i give brainliest​
satela [25.4K]
D

It can give some balls more chance to be picked, making it unfair
8 0
3 years ago
If a person tosses a coin 23 times, how many ways can he get 11 heads
EastWind [94]

Tossing a coin is a binomial experiment.

Now lets say there are 'n' repeated trials to get heads. Each of the trials can result in either a head or a tail.

All of these trials are independent since the result of one trial does not affect the result of the next trial.

Now, for 'n' repeated trials the total number of successes is given by

_{r}^{n}\textrm{C}

where 'r' denotes the number of successful results.

In our case n=23 and r=11,

Substituting the values we get,

_{11}^{23}\textrm{C}=\frac{23!}{11!\times 12!}

\frac{23!}{11!\times 12!}=1352078

Therefore, there are 1352078 ways to get heads if a person tosses a coin 23 times.


3 0
4 years ago
The owner of an office building is expanding the length and width of a parking lot by the same amount. The lot currently measure
Gnoma [55]

The best and most correct answer among the choices provided by your question is the second choice or letter B "20".

The current area is 120(80)=9600 and he want to expand it by 4400 so that the new area will be 9600+4400=14000 

14000=(120+x)(80+x) 

14000=9600+200x+x^2 

x^2+200x-4400=0 

x^2-20x+220x-4400=0 

x(x-20)+220(x-20)=0 

(x+220)(x-20)=0, since x is an increase it must be greater than zero so 

x=20ft 

(120+20)(80+20)=14000ft^2


I hope my answer has come to your help. Thank you for posting your question here in Brainly.

4 0
3 years ago
Read 2 more answers
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