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SVETLANKA909090 [29]
3 years ago
7

Simplify. 22÷(9+2) Need help

Mathematics
2 answers:
Vilka [71]3 years ago
7 0
22 / (9 + 2) =
22 / 11 =
2 <==
Lady bird [3.3K]3 years ago
6 0
22 / 11 =the answer is 2
i hope it's will be help u 
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A market research firm knows from historical data that telephone surveys have a 36% response rate. In a random sample of 280 tel
Rasek [7]

Answer:

0.6604

Step-by-step explanation:

Given that a market  research firm knows from historical data that telephone surveys have a 36% response rate.

Sample size of random sample = 280

We know for samples randomly drawn of large size sample proportion follows a normal distribution with mean= sample proportin and std error

= \sqrt{\frac{pq}{n} }

Substitute p = 0.36 and q = 1-0.36= 0.64

p follows N with mean = 0.36 and std dev = \sqrt{\frac{0.36*0.64}{\sqrt{280} } } \\=0.0287

Using normal distribution values we can find\

P(33.5p.c. < p < 39pc)\\= P(0.335

3 0
3 years ago
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F(x) = 3x2 + 6x – 18<br> Find f(10)
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=

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[Grouping the first 2 terms together and the 2md 2 terms together.]

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[Common factor]

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6

(

x

+

3

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{Taking the common bracket]

=

(

x

2

+

6

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(

x

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~Hope this helps! :)

5 0
3 years ago
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randy earns $14.50 per hour for the first 40 hours worked in a week and $21.75 per hour for hours over 40. Last week Randy earne
Nutka1998 [239]

Answer:

4 hours

Step-by-step explanation:

We know the following:

Total amount Randy earned: $667

Pay for first 40 hours: $14.50 per hour

Pay after 40 hours: $21.75 per hour

We need to find the total extra hours: x

If the total number of hours worked are, T, then: x + 40 = T

Total pay received for the first 40 hours: 40 \times 14.50 = 580

If out of $667, Randy earns $580 from the first 40 hours, the left over are earned by extra hours.

$667 - $580 = $87 ------- (a)

Total pay received for working after 40 hours: 21.75x

We know from eq (a)  that total pay is 87, hence we can find the number of hours using this.

21.75x = 87\\\\x = \frac{87}{21.75}\\\\x = 4

Randy worked 4 extra hours.

6 0
3 years ago
15. The graph of a linear function, f(x), is shown below. If the line is translated 2 units
Leto [7]

Answer: fx-2 i believe since translating down would subtract two

Step-by-step explanation:

4 0
2 years ago
The relation between the days, d,
kati45 [8]

Answer:

d =2.28 days

Step-by-step explanation:

Given:

V(d) = 350(0.6392)d + 2

Where,

V(d) = number of views

d = number of days

How many days will it take to

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Find d when V = 100

V(d) = 350(0.6392)d + 2

100 = 350(0.6392)d + 2

100 = 223.72d + 2

100 - 2 = 223.72d

98 = 223.72d

d = 223.72/98

d = 2.2828571428571

Approximately

d =2.28 days

8 0
3 years ago
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