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Nataliya [291]
2 years ago
8

Janice and Emily are selling raffle tickets. So far they have sold 42 tickets, which is 12% of what they're trying to sell. How

many tickets total are they trying to sell?
Mathematics
1 answer:
Degger [83]2 years ago
7 0

Answer:

350 tickets

Step-by-step explanation:

if you do 42/350, it would equal 12%, so 350 is the total

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A police officer would like to estimate the proportion of petty theft cases that have gone unsolved in a large city. He takes a
nata0808 [166]

Answer:

0.625 \pm 1.645*0.0571

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

\pi is the estimate

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}, also called the critical value.

The standard error is:

s = \sqrt{\frac{\pi(1-\pi)}{n}}

90% confidence level critical value

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.955, so z = 1.645.

Estimate:

72 petty theft cases and finds 45 of these have gone unsolved.

So \pi = \frac{45}{72} = 0.625

Standard error:

s = \sqrt{\frac{\pi(1-\pi)}{n}} = \sqrt{\frac{0.625*0.375}{72}} = 0.0571

Answer:

0.625 \pm 1.645*0.0571

7 0
2 years ago
I NEED HELPPPP ON THIS! <br> 3 questions
goldenfox [79]

Answer:

4. a) y = 3x -2

4. b) y = (2x)/3 -11/3

5. y = -(3x/4) +6

7 0
2 years ago
PLEASE HELPPPPPP ASAPPP<br>I WILL GIVE BRAINLEST FOR THE CORRECT ANSWER ​
guajiro [1.7K]

Answer:

a. Find the multiples of 4 and 12 in the 30 to 40 range:

4 ⇒ 32, 36, 40

12 ⇒ 36

Answer = 36

b. Divisors of 24 ⇒ 2, 3, 4, 6, 8, 12, 24

Answer = 3

3 is the only odd divisor.

c. Gcd = Greatest common divisor that isn't zero.

35 divisors ⇒ 1, 5, 7, 35

42 divisors ⇒ 1, 2, 3, 6, 7, 14, 21, 42

Answer = 7

d. 98 divisors ⇒ 1,2,7,14,49,98

99 divisors ⇒ 1,3,9,11,33,99

Answer = 1

e. Answer = 25.

A number's greatest divisor is its own self.

6 0
2 years ago
I need help.. 
Debora [2.8K]
This is exactly like the one with the 'n's that you posted yesterday.
I guess you didn't get enough help on that one to understand it.

<span><u>7k/8 - 3/4 - 5k/16 = 3/8</u>

3/4 is the same as 6/8.
Add it to each side of the equation:

7k/8         - 5k/16 = 9/8

Multiply each side by 16 :

14k - 5k = 18

Add up the 'k's on the left side:

9k = 18

From this point, you can proceed directly to the numerical value of 'k'
if you need it.<u />

In your question, you said you need help, and I showed you how to
strip the problem down so that the only thing left is ' k = something '.
Giving you the answer is no help.  Nobody actually needs the answer.
</span>


8 0
3 years ago
Read 2 more answers
Which of the following is most likely the next step in the series?<br> I need help pls :’(
LUCKY_DIMON [66]

Answer:

The answer is: A

Step-by-step explanation:

The way the numbers are counting around the wheel and the color pattern all match A

6 0
3 years ago
Read 2 more answers
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