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Elan Coil [88]
3 years ago
13

The phone you want to purchase is $200. You have a coupon for 30% off the purchase price. How much will you pay for the phone af

ter the discount?
Mathematics
2 answers:
cluponka [151]3 years ago
5 0

Answer:the phone will cost 140

Step-by-step explanation:

pentagon [3]3 years ago
4 0

Answer:

$140

Step-by-step explanation:

Orignal Price: $200

200 x 0.3

= 60

200 - 60

= 140

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10 points for this question!!!!!! Please answer like
alexdok [17]
Box one ratios
Box two 35:2= 70:4

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2 years ago
A random sample of 49 statistics examinations was taken. the average score, in the sample, was 84 with a variance of 12.25. the
tester [92]

Since in this case we are only using the variance of the sample and not the variance of the real population, therefore we use the t statistic. The formula for the confidence interval is:

<span>CI = X ± t * s / sqrt(n)                      ---> 1</span>

Where,

X = the sample mean = 84

t = the t score which is obtained in the standard distribution tables at 95% confidence level

s = sample variance = 12.25

n = number of samples = 49

From the table at 95% confidence interval and degrees of freedom of 48 (DOF = n -1), the value of t is around:

t = 1.68

 

Therefore substituting the given values to equation 1:

CI = 84 ± 1.68 * 12.25 / sqrt(49)

CI = 84 ± 2.94

CI = 81.06, 86.94

 

<span>Therefore at 95% confidence level, the scores is from 81 to 87.</span>

6 0
3 years ago
Someone please help please I don’t understand this can u please be specific when answering it please help me I’m giving 20points
Len [333]

  Okay so first we need to find 40% of 7.50. To do this you simply divide the percentage by 100, so you have .4 now. You multiply 7.50 by .4 and get 3. Lastly, you just subtract 3 from 7.50 and you get $4.50

Emma will pay $4.50 after the discount.

7 0
3 years ago
Read 2 more answers
List common factors of 9 and 18
In-s [12.5K]
9:{1,3 3,9}
18:{1,2,3 6,9,18}
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3 years ago
If Serena selects 4 samples from the table, which row
prisoha [69]

Answer:1: Row 3

2: Row 2

3:6 and 10

Step-by-step explanation:

I just finished doing the assignment

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