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Alexus [3.1K]
3 years ago
12

Plzzzzzz help me I will mark brainlest

Mathematics
1 answer:
Stolb23 [73]3 years ago
7 0

a_n = a_ (n-1) +d



a)   2,8,14,.......

b)  8-2 =6

14-8 =6

d=6

c) a_n = a_ (n-1) +8

check:

a_1 = 2

a_2 = a_ 1  +6  = 2+6  =8

2_3   = a_2  + 6   = 8 + 6=14

a_n = a_ (n-1) +8



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Pleksndkdndjdndnbrksndkdbmdbdksbdkxndjndkzms help
sladkih [1.3K]

Answer:

2 x 10^1 (it looks weird how i typed it so its the first answer btw)

Step-by-step explanation:

(6.4 x 10^3) / (3.2 x 10^2)     1. Follow PEMDAS

(6400) / (320)                      2. Divide regularly

20                                        3.  Take the 20 and put it in scientific notation

2 x 10^1

hope this helps :)           

3 0
3 years ago
Takumi started studying how the number of branches on his tree changes over time.
Musya8 [376]

Answer:

Grows, Factor of 2

Step-by-step explanation:

The relationship between the elapsed time, t, in years, since Takumi started studying his tree, and the total  number of its branches, N(t), is modeled by the function:

N(t) = 63. 2^t

For illustration, let us take the growth for the first three years after he started studying the number of branches.

When \:t=1, N(1) = 63. 2^1=126\\When \:t=2, N(2) = 63. 2^2=252\\When \:t=3, N(3) = 63. 2^3=504\\504\div 252=252\div 126=2

We notice that for each subsequent year, the number of branches doubles.

Therefore:

Every year, the number of branches  <u>grows</u> by a factor of <u>2.</u>

8 0
4 years ago
Solve the system of equations using subtraction.<br> 4x - 2y = 10<br> 4x + y = 19
Alex777 [14]

Answer:

y=3 x=4

Step-by-step explanation:

4x - 2y = 10

<u>4x + y = 19</u>

    -3y=-9

the 4x canceled out.

y=3

plug in y into one of the equations

4x + 3 = 19

4x=16

x=4

Hope this helps!

If not, I am sorry.

3 0
2 years ago
Read 2 more answers
19 Which figure(s) below can have a triangle as a two-dimensional cross
Andrew [12]

The figures that can have a triangle as a two-dimensional cross section are (4) I, III, and IV, only

<h3>How to determine the figures?</h3>

The cross-section of three-dimensional figures are as a result of slicing the figure along its axis.

  • When the cube is sliced with its plane, it gives a triangle face
  • When a cone is sliced vertically, it gives a triangle face
  • One of the faces of a square pyramid is a triangle; so it has a triangle face

Hence, the figures that can have a triangle as a two-dimensional cross section are (4) I, III, and IV, only

Read more about cross section at:

brainly.com/question/3603397

#SPJ1

5 0
2 years ago
A recent survey determined the IQ score of a random selection of residents of Alaska. The accompanying relative frequency distri
ycow [4]

Answer:

The class width is 20

Step-by-step explanation:

In a frequency or a relative frequency distribution the class width is calculated as the difference between the lower or upper class limits of consecutive classes. A point to note is that all the categories or classes usually have the same class width.

We use the first two classes to calculate the class width by using their respective upper limits;

Class width = 89 - 69

Class width = 20

4 0
3 years ago
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