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MaRussiya [10]
3 years ago
7

Tito Jackson had $30.85. He took a girl on date to a nice restaurant, and the bill was $48. 67. How much money does he have in h

is account after this dinner?
Will it be positive or Negative?

sum or Difference?
Mathematics
2 answers:
meriva3 years ago
6 0

Answer:

$-17.82

Step-by-step explanation:

he has $-17.82 because 30.85(the amount he has)-48.67(the amount he paid for) = -17.82

JulsSmile [24]3 years ago
6 0
You would do 30.85-48.67 which would equal negative 17.82
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Brainly didnt let me copy and paste lol check the picture
lozanna [386]

Answer:

A 5040

B 35

Step-by-step explanation:

A  There are 7 ways to put the first picture.  There are 6 pictures left and 6 ways to put the 2nd picture.  There are now 5 pictures left and 5 ways to put the 3rd picture.  And so on

7 * 6*5*4*3*2*1

5040

B  If we can only have 3 pictures and order does not matter

7 choices for the first * 6 *5

But

We have to take into account order

The first picture can go into 3 slots, the second into 2 and the third 1 so divide by 6

(7*6*5)/ (3*2*1)

35

3 0
3 years ago
The number of DVDs in a random person’s home collection is counted for a sample population of 80 people. The mean of the sample
VLD [36.1K]

Answer:

E = 3.46\ movies

Step-by-step explanation:

The formula to find the error is:

E = z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}

Where:

\sigma is the standard deviation

n is the sample size

So

n = 80 people

\sigma = 12 movies

Then

1- \alpha = confidence level = 0.99

\alpha= 1-0.99

\alpha = 0.01\\\\\frac{\alpha}{2} = 0.005

We look for the Z value: Z_{0.005}

Z_{0.005}=2.58  Looking in the normal standard tables

Therefore:

E =2.58*\frac{12}{\sqrt{80}}\\\\E = 3.46\ movies

7 0
3 years ago
Please help! Please show all work! Thx!
OverLord2011 [107]

Answer:

Part A)

86=2(x+22)

Part B)

l=26\text{ cm}

Step-by-step explanation:

We know that the rectangle has a length of (x+5) and a width of 12 cm.

Part A)

Remember the formula for the perimeter of a rectangle:

P=2(l+w)

We know that the perimeter is 86. Substitute that for P:

86=2(l+w)

Substitute (x+5) for the length l and 17 for w. So:

86=2((x+5)+17)

We can simplify this to acquire our equation:

86=2(x+22)

Part B)

To find the length, let's find our x first. We have the equation:

86=2(x+22)

Divide both sides by 2:

43=x+22

Now, subtract 22 from both sides. Therefore, our x is:

x=21

To find the length, remember that the length is:

l=x+5

Since we now know the value of x, substitute 21 for x:

l=21+5

Add:

l=26\text{ cm}

So, the length is 26 centimeters.

And we're done!

4 0
3 years ago
A utility company might offer electrical rates based on time-of-day consumption to decrease the peak demand in a day. Enough cus
rusak2 [61]

Answer:

0.2406 = 24.06% probability that exactly two of the selected major customers accept the plan

Step-by-step explanation:

The customers are chosen without replacement, which means that we use the hypergeometric distribution to solve this question.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

50 major customers, 15 would accept the plan.

This means that N = 50, k = 15

The utility selects 10 major customers randomly (without replacement) to contact and promote the plan.

This means that n = 10

a. What is the probability that exactly two of the selected major customers accept the plan

This is P(X = 2).

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

P(X = 2) = h(2,50,10,15) = \frac{C_{15,2}*C_{35,8}}{C_{50,10}} = 0.2406

0.2406 = 24.06% probability that exactly two of the selected major customers accept the plan

4 0
3 years ago
The spinner below shows 5 equally sized slices. Rain a spun the dial 500 Times and got the following results.
tensa zangetsu [6.8K]
Probability is represented as the number of ways for an event to happen over all possible outcomes. For the theoretical probability, there is 1 black spot and 5 total options. Therefore, the probability is 1/5, or 0.20.
For experimental probability, there were 103 times it landed on black out of 500 spins. The probability is 103/500, or 0.206.
Lastly, the multiple choice. The larger sample size you take, assuming a fair spinner, the more likely you are to see results similar to the theoretical probability. This is because the larger sample size taken, the less each individual spin effects the outcome.

8 0
4 years ago
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