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Leokris [45]
3 years ago
11

Alright i have 4 separate questions to ask for this one i will label them number one through 4 so you don't get mixed up

Mathematics
2 answers:
CaHeK987 [17]3 years ago
4 0

Answer:

1: C. $3,474.38

2: B. $44.10

C: C. $570

Step-by-step explanation:

1.

4250 - (4250 x 0.25)

3187.50

3187.50 + (3187.50 x 0.09)

3474.375 which rounds up to

$3,474.38

2.

52 - (52 x 0.2)

41.6

41.6 + (41.6 x 0.06)

44.096 which rounds up to

44.10

3.

500 + (500 x 0.2)

600

600 - (600 x 0.05)

570

yKpoI14uk [10]3 years ago
4 0
1. C
2.B
3.C im a genius btw
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Help please!!! Find the sum of the series show your work
AleksAgata [21]

Answer:

\sum_{i=1}^{12}(3i-1) = 222

Step-by-step explanation:

The given series is

\sum_{i=1}^{12}(3i-1)

The first term is

f(1) = 3 \times 1 - 1 = 2

The last term is

f(12) = 3 \times 12 - 1 = 35

To find the number of terms in the sequence, solve,

3i - 1 = 35

3i = 36 \\ i = 12

The sum of the first i-terms of an arithmetic sequence is:

S_i =  \frac{i}{2} (f(1) + f(2))

We substitute the values to get;

S_ {12}=  \frac{12}{2} (2+ 35)

S_ {12}=6(37)

S_ {12}= 222

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4 years ago
What is the circumference of the circle in terms of pi? The radius is 2.2
klemol [59]
We will use formula for circumference of circle:
lets name it as O

O = 2*r * pi

when we express r in this formula we get:

O = 2*2.2*pi
O = 4.4*pi

From this we can see that for given radius, answer is 4.4. The formula only depends on pi and that is what "in terms of pi" means.
6 0
4 years ago
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How do you round 281.05 to the nearest tenth
Andrew [12]

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3 years ago
Tiana is preparing for a dance recital. She practices for 25 minutes on Tuesday and 35 minutes on thursday. Tian increased her p
Ymorist [56]

Tina increased 40% time from Tuesday to Thursday

Step-by-step explanation:

The percent increase is given by:

Percent\ increase = \frac{Increase}{Initial\ Value}*100

Where

Increase = Current\ value- initial\ value

Here given

Increase = 10 minutes

Initial value = 25 minutes

So the percentage increase will be:

Percent\ increase = \frac{10}{25}*100\\= 0.4*100\\=40\%

Tina increased 40% time from Tuesday to Thursday

Keywords: Percent, percentage

Learn more about percentage at:

  • brainly.com/question/9196410
  • brainly.com/question/9178881

#LearnwithBrainly

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Answer:

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