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Viefleur [7K]
2 years ago
13

Circumference of circle use3.14 for value

Mathematics
2 answers:
Sladkaya [172]2 years ago
4 0

Answer:

2πr

Step-by-step explanation:

Elan Coil [88]2 years ago
3 0

Answer: 18.2 inches

Step-by-step explanation:

C = 2πr

   = 2 · 3.14 · 2.9

   = 18.2

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Estimate 1 13 cos(x2) dx 0 using the Trapezoidal Rule and the Midpoint Rule, each with n = 4. (Round your answers to six decimal
babunello [35]

Answer:

(a) 4.152698

(b) 3.215557

Step-by-step explanation:

(a)

\int\limits^{13}_1 {cos(x^2)} \, dx =M_n=$\sum_{n=1}^{\infty} f(m_i)\Delta x $

n=4, so :

Each subinterval has length :

\Delta x= \frac{b-a}{n} =\frac{13-1}{4} =\frac{12}{4} =3

Therefore the subintervals consist of:

[1,5], [5,9], [9,13]

Now, the midpoints of these subintervals are:

\frac{1+5}{2} =3\\\\\frac{5+9}{2} =7\\\\\frac{9+13}{2} =11

Hence:

M_4= 3*(cos(3^2))+3*(cos(7^2))+3*cos((11^2))\approx 4.152698

(b)

\int\limits^{13}_1 {cos(x^2)} \, dx =T_n=\frac{\Delta x}{2} (f(x_o)+2f(x_1)+2f(x_2)+...+2f(x_n_-_1)+f(x_n))

n=4, so :

Each subinterval has length :

\Delta x= \frac{b-a}{n} =\frac{13-1}{4} =\frac{12}{4} =3

Therefore the subintervals consist of:

[1,5], [5,9], [9,13]

The endpoints of the subintervals consist of:

5,9

Hence:

T_4= \frac{3}{2}(cos(1^2)+2*cos(5^2)+2*cos(9^2)+cos(13^2)) \approx 3.215557

8 0
3 years ago
The governor of state A earns ​$52,215 more than the governor of state B. If the total of their salaries is ​$294,915​, find the
QveST [7]
Divide 294915 by two then subtract it by governor A then go from there
4 0
3 years ago
Please answer asap! no scam links or scam comments or reported.
Scilla [17]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
Ts.
gladu [14]

Answer:

A. 12

Step-by-step explanation:

Well if the volume is 840 you have to know the height. height is 14. divide 840 by 14 which equals 60. perimeter is what is asked so divide 60 by 5 cause it is a pentagon. hence your answer is 12.

4 0
3 years ago
Read 2 more answers
Need help ASAP please hurry
Dafna11 [192]
The total number of rotations cheeks needs to run is AT LEAST 45 so:
total number of rotation \geq 45
there are already 6 rotations ran so r+6 = total number of rotation. that means we can rewrite the inequality as:
r+6 \geq45
which is the first option.

let me know if you have any more questions!
7 0
3 years ago
Read 2 more answers
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