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matrenka [14]
3 years ago
6

A coffee shop needs to purchase custom cups. Company C charges a flat fee of $155 plus $15 perrl cup. Company D does not have a

flat fee but charges $30 per cup.
What is the minimum number of cups that must be ordered for company C to be a better deal than company D?​
Mathematics
1 answer:
bezimeni [28]3 years ago
8 0

Answer:

11 cups

Step-by-step explanation:

Not really a method just started at 10 and then realised deal d was better so go up by one so 11 and c worked out better as I timed 30 by 11 and 15 by 1 + the flat fee.

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Mrs. Rowan allotted 30 minutes at the
NikAS [45]

Answer:

40%

Step-by-step explanation:

Experimental-theoretical over theoretical.

5 0
3 years ago
It is known that 5% of the population over the age of 30 in a city is a university graduate. Among the 100 people chosen randoml
Novosadov [1.4K]

Answer:

A) 1/3200000

B) 19/20

Step-by-step explanation:

Percentage population of graduates = 5

Proportion of graduates from 100 random samples = percentage × number of samples

Proportion of graduates = 0.05 × 100 = 5

Probability of having 5 graduates among the 100 random samples:

P(1 graduate) = possible outcome / total required outcome

P(1 graduate) = (5 / 100) = 1/20

P(5 graduates) = (1/20)^5

P(5 graduates) = 1/3200000

Probability of never being a graduate = (1 - probability of being a graduate)

Probability of never being a graduate = ( 1 - (1/20)) = 19/20

5 0
3 years ago
What is the 9th term of the geometric sequence 4, −20, 100, …?
sveta [45]
First, we are going to find the common ratio of our geometric sequence using the formula: r= \frac{a_{n}}{a_{n-1}}. For our sequence, we can infer that a_{n}=-20 and a_{n-1}=4. So lets replace those values in our formula:
r= \frac{-20}{4}
r=-5

Now that we have the common ratio, lets find the  explicit formula of our sequence. To do that we are going to use the formula: a_{n}=a_{1}*r^{n-1}. We know that a_{1}=4; we also know for our previous calculation that r=-5. So lets replace those values in our formula:
a_{n}=4*(-5)^{n-1}

Finally, to find the 9th therm in our sequence, we just need to replace n with 9 in our explicit formula:
a_{9}=4*(-5)^{9-1}
a_{9}=4*(-5)^{8}
a_{9}=1562500

We can conclude that the 9th term in our geometric sequence is <span>1,562,500</span>
4 0
3 years ago
Malaya creates a password as follows: letter, number, letter, special character, number Assuming that there are 12 special chara
Tems11 [23]
Hey there!

I'm not too sure about this question, but I'm gonna guess 12 or 15

I hope this helps out a little bit! 

Always remember, you are a Work Of Art!
- Nicole <3 :)
4 0
3 years ago
Help me out !!!!!!!!!!
SVETLANKA909090 [29]

Answer:

Is it too late to tell you its 90 degrees

Step-by-step explanation:

6 0
3 years ago
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