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Alenkinab [10]
3 years ago
12

What is the sum of the series? Write in expanded form making sure to show all steps used to find the sum.

Mathematics
2 answers:
san4es73 [151]3 years ago
6 0

Answer:

-16

Step-by-step explanation:

k = 3

-2(3) + 5 = -1

k = 4

-2(4) + 5 = -3

k = 5

-2(5) + 5 = -5

k = 6

-2(6) + 5 = -7

(-1) + (-3) + (-5) + (-7)

= -16

SOVA2 [1]3 years ago
5 0

Answer: the answer to your question is -16

Step-by-step explanation:

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1/5 of the passengers on a bus are young adults and 2/3 of them are children. The remaining passengers are senior citizens. What
saveliy_v [14]

Answer:

Step-by-step explanation:

First, you need to find the fraction of the passengers who are not senior citizens. Add 1/5 and 2/3 to get 13/15.

This means that 13/15 of the passengers aren't senior citizens and 2/15 of the passengers are senior citizens.

Hope i helped!

5 0
4 years ago
on her first day of work, mia sold one straw hat. on day two, she sold three straw hats. on day three, she sold five straw hats,
garri49 [273]

If Mia sold 2 more hats on each suceeding day, after working 40 days it is expected Mia had sold a total of 1523 hats.

<h3>How many hats will Mia sell everyday?</h3>

Day: Hats

  • 1 = 1
  • 2=3
  • 3 = 5
  • 4=7
  • 5= 9
  • 6=11
  • 7= 13
  • 8= 15
  • 9=17
  • 10=19
  • 11= 21
  • 12=23
  • 13= 25
  • among others

You can notice the number of hats she will sell follow a pattern as there are only sequential odd numbers.

<h3>How many hats will Mia sell in total?</h3>

By following the sequence let's add the hats she will sell everyday:

  • 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25 + 27 + 29 + 31 + 33 + 35 + 37 + 39 + 41 + 43 + 45 + 47 + 49 + 51 + 53 + 55 + 57 + 59 + 61 + 63 + 65 + 67 + 69 + 71 + 73 + 75 + 79 = 1523

Learn more about sums in: brainly.com/question/13013054

6 0
2 years ago
We have a bag that contains 100 balls, 50 of them red and 50 blue. Select 5 balls at random. What is the probability that 3 are
MakcuM [25]

Answer:

Likely, I think I havent been in this for a long time so i may be a little rusty. But anyways, I hope this helped!

Step-by-step explanation:

5 0
3 years ago
For each pair of points below, think about the line that joins them. For which pairs is the line parallel to the y-axis? Circle
gogolik [260]

Answer:

Option B.

Step-by-step explanation:

If two lines are parallel then their slopes are always same.

Following this rule we can find the slope by the given pairs of coordinates of the options.

If the slope of the line is same as the slope of y axis then the line passing through these points will be parallel to the y axis.

Slope of y - axis = ∞

Option A). Slope = \frac{y-y'}{x-x'}

                            =  \frac{24-8.5}{3.22-3.2}

                            = \frac{15.5}{0.02}

                            = 775

Therefore, line passing through points (3.2, 8.5) and (3.22, 24) is not parallel to y axis.

Option B). Slope of the line passing through (\frac{40}{3},\frac{14}{3}) and (\frac{40}{3},7) will be

= \frac{\frac{14}{3}-7}{\frac{40}{3}-\frac{40}{3}}

= ∞

Therefore, line passing though these points is parallel to the y axis.

Option C). Slope of the line passing through (2.9,5.4) and (7.2, 5.4)

= \frac{5.4-5.4}{7.2-2.9}

= 0

Therefore, slope of this line is not equal to the slope of y axis.

Option B. is the answer.

5 0
4 years ago
On a scale drawing, a school is 1.6 feet tall. the scale factor is 1/22. Find the height of the school
Pie

Answer:

35.2 ft

Step-by-step explanation:

Multiply the scale factor and the height.

6 0
3 years ago
Read 2 more answers
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