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faust18 [17]
3 years ago
8

What is the twelfth term in the sequence 13, 26, 39, …?

Mathematics
2 answers:
OverLord2011 [107]3 years ago
8 0

Answer:

the answer is 156

Step-by-step explanation:

for my own method

13 is the sequence

so 13×12=156

<h3> or</h3>

13+13=26+13=39+13=52+13=65+13=78+13=91+13=104+13=117+13=130+13=143+13=156.

<h2><em>s</em><em>o</em><em> </em><em>t</em><em>h</em><em>a</em><em>t</em><em> </em><em>i</em><em>s</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>f</em><em>i</em><em>n</em><em>a</em><em>l</em><em> </em><em>a</em><em>n</em><em>s</em><em>w</em><em>e</em><em>r</em></h2>
Gwar [14]3 years ago
7 0

Answer:

  • 156

Step-by-step explanation:

<u>Given the sequence </u>

  • 13, 26, 39, …

<u>We see it is an AP with</u>

  • The first term a = 13
  • Common difference d = 13 ( as 26 - 13 = 39 - 26 = 13)

<u>The 12th term is:</u>

  • a₁₂ = a + 11d = 13 + 11*13 = 156
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María drinks 400 ml of water every hour. How many hours will it take her to drink 2 L of water?
JulijaS [17]

Hello,

The correct answer is 5 Liters.

2 Liters of water = 2000 Milliliters.

If she drinks 400 Milliliters per hour, then you do 2000 ÷ 400 to work out the number of hours.

2000 ÷ 400 = 5

Hope this helps!!!! :)

5 0
3 years ago
A group of preschoolers has 30 boys and 13 girls what is the ratio of boys to all children? ​
vekshin1

A group of preschoolers has 30 boys and 13 girls then the ratio of boys to all children would be 30:43.

What is a ratio?

A ratio in mathematics shows how many times one number contains another. For example, if a bowl of fruit contains eight oranges and six lemons, the orange-to-lemon ratio is eight to six. Similarly, the lemon-to-orange ratio is 6:8, and the orange-to-total fruit ratio is 8:14.

A group of preschoolers has 30 boys and 13 girls.

Total children will be = 30 + 13 = 43

          Ratio = number of boys/total children

                  = 30/43.

Hence, if A group of preschoolers has 30 boys and 13 girls then the ratio of boys to all children would be 30:43.

To learn more about the ratio, visit:

brainly.com/question/12024093

#SPJ1  

7 0
1 year ago
A ball is dropped from a height of 8 feet. If every time it bounces, it bounces 60% of its previous height, what is the total di
vladimir1956 [14]

Answer:

<h3>20feet</h3>

Step-by-step explanation:

Initial height of the ball = 8feet

If it bounces 60% of its previous height, its new height will be;

60% of 8

= 60/100 * 8

= 480/100

= 4.8 ft

If it bounces 60% of its current distance, new height will be expressed as;

60% of 4.8

= 0.6 * 4.8

= 2.88

The height of the ball will keep reducing and form a geometric progression of the form 8, 4.8, 2.88...

In order to get the total distance traveled by the ball, we need to calculate the sum to infinity of the sequence;

S∞ = a/1-r where;

a is the first term = 8

r is the common ratio

r = \frac{4.8}{8} = \frac{2.88}{4.8}\\r =  0.6

Substitute into the formula;

S∞ = a/1-r

S∞ = 8/1-0.6

S∞ = 8/0.4

S∞ = 20feet

Hence the total distance traveled by the ball is 20feet

8 0
3 years ago
Find c in the equation <br> 8c=14-0.5(10c+2)
kozerog [31]
8c = 14 - 5c - 1
13c = 13
c = 1
6 0
3 years ago
I need your hlep now!!! this is due tomorrow
Aliun [14]

Answer:

6. -200+75= -125

7. -40+-17= -57

8. 6+-9= -3+7=4+-5= -1

5+3=8+-6= 2

11+-12= -1+-3= -4+4=0

Correct answer: Cory goes first

Step-by-step explanation:

5 0
3 years ago
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