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3 years ago

How do you calculate the perimeter of a circle

Mathematics

1 answer:

sasho [114]3 years ago

3 0

Answer:

Perimeter= πd or Perimeter= 2πr

Step-by-step explanation:

d= diameter

r = radius

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Let A={2,3,4} B={2,5,6} C={5,6,2} and D={6}. Determine if the following statements are true:

Pie

Answer:

i. 4∈C => False

ii. 5∈C => True

iii. A = B => False

iv. B=C => True

Step-by-step explanation:

Given sets are:

$A = \{2,3,4\}\\B = \{2,5,6\}\\C = \{5,6,2\}\\D = \{6\}$

Lets look at the statements one by one.

i. 4∈C

This statement means that 4 is a member of set C. Looking at the members of set C, it can be concluded that the statement is wrong as C doesn't contain 4.

ii. 5∈C

This statement is true as 5 is a member of C.

iii. A=B

This statement states that set A is equal to set B. Two sets are said to be equal if there number of elements and members are same. Set A and Set B have different members so this statement is false.

iv. B=C

Set B and Set C have equal number of members and the members (5,6,2) are also same so the statement is true.

Hence,

i. 4∈C => False

ii. 5∈C => True

iii. A = B => False

iv. B=C => True

5 0

3 years ago

Population density is the number of people per unit of area the population density of a certain region is 60 people per square k

DedPeter [7]

Answer:

1,380 people

Step-by-step explanation:

4 0

2 years ago

F(x) = 5x and g(x) = x + 11.

ratelena [41]

Answer:

Step-by-step explanation:

f(x) × g(x)

= 5x(x + 11) = 5x² + 55x, thus

h(x) = 5x² + 55x → C

3 0

4 years ago

Read 2 more answers

The velocity of a particle moving back and forth on a line is vequalsStartFraction ds Over dt EndFraction equals6 sine (2 t )Sta

max2010maxim [7]

Answer:

s = 6 m

Step-by-step explanation:

The value of the velocity v is given as:

$v = \frac{ds}{dt} = 6 sin(2t)$ m/s

To find s, we have to integrate and apply the initial values of s = o when t = 0:

$\frac{ds}{dt} = 6 sin(2t)\\\\\int\limits^s_0 {ds} = \int\limits^t_0 {6sin(2t)} \, dt\\\\s|^s_o = -3cos(2t)|^t_o\\\\s - 0 = -3cos(2t) -(-3cos(0))\\\\s = -3cos(2t) + 3(1)\\\\s = -3cos(2t) + 3$

When t = π/2, s will be:

s = -3cos(2 * π/2) + 3

s = -3cos(π) + 3

s = -3(-1) + 3

s = 3 + 3

s = 6 m

4 0

4 years ago

Integrate sinx+2x with respect to x

N76 [4]

Answer:

Use the half angle formula, sin^2(x) = 1/2*(1 - cos(2x)) and substitute into the integral so it becomes 1/2 times the integral of (1 - cos(2x)) dx. Set u = 2x and du = 2dx to perform u substitution on the integral. Since dx = du/2, the result is 1/4 times the integral of (1 - cos(u)

Step-by-step explanation:

Have a horse-some day!

4 0

4 years ago