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Deffense [45]
3 years ago
14

you earn $3 an hour as a waitress. after working 3 hours , you earn $12, $5 and $7 in tips. how much money did you earn in total

. explain how you found your answer
Mathematics
2 answers:
Licemer1 [7]3 years ago
5 0
$5 + $7 + $12 = $24
You add them all together.
8_murik_8 [283]3 years ago
4 0
You add them all together to get $24. 
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COMPLETE<br> The equation X-9=0 has how many <br> real solution(s).
Maru [420]

Answer:

one solution

Step-by-step explanation:

X-9=0

Add 9 to each side

X-9+9=0+9

x = 9

There is one solution

5 0
3 years ago
A random sample of 121 students from the University of Oklahoma had a sample mean ACT score of 23.4 with a sample standard devia
Grace [21]

Answer:

(22.74,24.06) is the required 95% confidence interval for the population mean ACT score of University of Oklahoma students.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 121

Sample mean = 23.4

Sample standard deviation = 3.65

Level of significance = 0.05

Degree of freedom

= n - 1 = 120

95% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Calculation of critical value:

t_{critical}\text{ at degree of freedom 120 and}~\alpha_{0.05} = \pm 1.9799  

Putting the values, we get,  

23.4\pm 1.9799(\dfrac{3.65}{\sqrt{121}} )\\\\ = 23.4 \pm 0.6569\\\\ = (22.7431 ,24.0569)\approx (22.74,24.06)  

(22.74,24.06) is the required 95% confidence interval for the population mean ACT score of University of Oklahoma students.

5 0
3 years ago
Write a few sentences summarizing how to solve word problems that involve square roots
Snowcat [4.5K]

Answer:

Square both sides of the equation given in order to remove the square root.

8 0
3 years ago
80% of 15 plus fraction
lana [24]

Answer:

Idk what u mean by fraction but 80% of 15 is 12

Step-by-step explanation:

7 0
2 years ago
HELP!! ANSWER AND SHOW STEPS IF POSSIBLE! ASAP HELP PLEASE
Schach [20]
<span>1.) Previous balance = 3529.30
APR = 18.6%, thus monthly interest rate = 18.6 / 12 = 1.55%
Previous balance + interest = 3529.30(1 + 0.0155) = 3584.00
New balance after transaction = 3584.00 + 148 = 3732.00

2.) Previous balance = 5834.53
APR = 20.4%, thus monthly interest rate = 1.7%
Previous balance - payment = 5834.53 - 150 = 5680.53
Balance + interest = 5634.53(1 + 0.017) = 5781.17
New balance after transaction = 5781.17 + 325 = 6106.17

3.) Total payment = 15264
Number of payments = 72 monthly payments
Monthly payment = 15264 / 72 = 212

4.) Amount bollowed = 7400 at 7% APR
Amount plus interest = 7400(1 + 0.07) = 7918
Monthly payment = 7918 / 12 = 659.83
</span>
5 0
3 years ago
Read 2 more answers
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