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Aleksandr-060686 [28]
3 years ago
10

2). 2, x, 14 are in Arithmetic progression, then the value of x is :

Mathematics
2 answers:
11111nata11111 [884]3 years ago
3 0
The answer is C. 7 hope it help ;)
Ket [755]3 years ago
3 0
An arithmetic progression is a constant rate of change through addition or subtraction. The formula for an arithmetic sequence/progression is an = a1 + (an-1)d. an is the term that we are looking for, a1 is the first term, and d is the common difference which is the distance between each of the numbers.

If we plug in our numbers, we get 2 = 2 + (2-1)6. I found the common difference by subtracting 14 and 2 and then dividing by 2. 12/6 = 6. We need to first multiply 1 and 6 to get 6. 6 + 2 is 8. Therefore, the value of x is 8.
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The area of the regular pentagonal base of this prism is 43.06 square units. What is the volume of this prism?
LUCKY_DIMON [66]

The Volume of this prism is 148.35 cu.units, Option D is the right answer.

<h3>What is Volume ?</h3>

The space occupied by a three dimensional object is called Volume.

Area of the base of the prism is the area of the pentagon

Area of the pentagon is given by

\rm A = \dfrac{1}{4} \sqrt{5(5+2\sqrt{5})} a^2

The area is given as 43.06 sq. units

On solving the side of pentagon is 5 units

The volume of the pentagonal prism is given by

V = (5/2)abh

where a is the length of apothem , b is the base length and h is the height

V = (5/2) * 3.44 * 5* 3.45

V = 148.35 cu.units

Therefore the Volume of this prism is 148.35 cu.units , Option D is the right answer.

To know more about Volume

brainly.com/question/1578538

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2 years ago
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Yakvenalex [24]
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8 0
3 years ago
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I would like to know how to do this problem
____ [38]

Answer:

y = 1/3 x + 7

Step-by-step explanation:

Parallel line has same slope

x - 3y = 21

y = 1/3 x -7         slope = 1/3

pass point (-6 , 5)

y = mx + b      m: slope          b: y intercept   y = 5      x = -6

b = y - mx = 5 - (1/3 x (-6)) = 7

equation: y = 1/3 x + 7

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3 years ago
Which ordered pairs in the form (x, y) are solutions to the equation 3x−4y=21?
zmey [24]
We must plugin values:
3(7)-4(0)=21, is CORRECT since 7•3 is 21 and -4•0 is 0
3(11)-4(3)=21 is CORRECT since 3•11=33 and -4•3=-12 so 33-12=21
3(-3)-4(3)=21 is INCORRECT since 3•-3 is -9 and -4•3 is -12, -9-12 is -21
3(-1)-4(-6)=21 is CORRECT since 3•-1 is -3 and -4•-6 is 24 and so 24-3=21
4 0
4 years ago
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