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dolphi86 [110]
3 years ago
9

If I have 20 dollars then i buy 13 dollars worth of food how much dollars do i have .

Mathematics
2 answers:
Sophie [7]3 years ago
5 0

Answer:

u have 7$

Step-by-step explanation:

victus00 [196]3 years ago
4 0

Answer: 7

Step-by-step explanation:

you need to answer the question like this:

20-13= 7

that is the answer because, you originally have $20, you send those $13 so you would only have 7 dollars left.

Good luck on your work!

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43 milk jugs are in a fridge with 11 that are spoiled. 5 jugs are randomly selected. what are the odds that the first two are go
malfutka [58]

Answer:

0.85% probability that the first two are good and the last three are spoiled

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the first two jugs is not important, as is not the order in which the last three are selected. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Desired outcomes:

2 spoiled, from a set of 43-11 = 32.

3 spoiled, from a set of 11.

So

D = C_{32,2}*C_{11,3} = \frac{32!}{2!(32-2)!}*\frac{11!}{3!(11-3)!} = 982080

Total outcomes:

5 jugs from a set of 43.

T = C_{43,5} = \frac{43!}{5!(43-5)!} = 115511760

Probability:

p = \frac{D}{T} = \frac{982080}{115511760} = 0.0085

0.85% probability that the first two are good and the last three are spoiled

4 0
3 years ago
A small pizza costs 9 dollars and each additional topping cost 0.75 dollars
Natasha2012 [34]
Yes, because if you divide 9/.75 you get 12 which means 12 toppings can be added evenly on the pizza
4 0
3 years ago
Read 2 more answers
SAT verbal scores are normally distributed with a mean of 433 and a standard deviation of 90. Use the Empirical Rule to determin
laila [671]

34% of the scores lie between 433 and 523.

Solution:

Given data:

Mean (μ) = 433

Standard deviation (σ) = 90

<u>Empirical rule to determine the percent:</u>

(1) About 68% of all the values lie within 1 standard deviation of the mean.

(2) About 95% of all the values lie within 2 standard deviations of the mean.

(3) About 99.7% of all the values lie within 3 standard deviations of the mean.

$Z(X)=\frac{x-\mu}{\sigma}

$Z(433)=\frac{433-\ 433}{90}=0

$Z(523)=\frac{523-\ 433}{90}=1

Z lies between o and 1.

P(433 < x < 523) = P(0 < Z < 1)

μ = 433 and μ + σ = 433 + 90 = 523

Using empirical rule, about 68% of all the values lie within 1 standard deviation of the mean.

i. e. ((\mu-\sigma) \ \text{to} \ (\mu+\sigma))=68\%

Here μ to μ + σ = \frac{68\%}{2} =34\%

Hence 34% of the scores lie between 433 and 523.

8 0
3 years ago
A dance studio teaches students a contemporary dance form. It is observed that the probability of students from this studio beco
Helen [10]
\mathbb P(X=75)=\dbinom{120}{75}0.69^{75}(1-0.69)^{120-75}\approx0.0239

or about a 2.4% chance.
5 0
3 years ago
Read 2 more answers
Can someone please help me with this quiz or does anyone have the answer key it’s by Gina Wilson.
tatiyna

Answer:

put a more clear pic

Step-by-step explanation:

6 0
3 years ago
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