1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Komok [63]
3 years ago
13

Determine how long it will take an object to rotate through 20.0 revolutions at an angular velocity of 2.8 radians per second. U

se π=3.14. Round the answer to the nearest tenth.
Mathematics
1 answer:
Andreyy893 years ago
5 0
The conversion factor between radians and revolution as measures of angle is 2π rad is equal to 1 revolution. Converting the given angular velocity to rev/s,
                (2.8 rad) x (1 rev / 6.28 rad) = 70/157 revolution per second
Dividing the given angle, 20 rev by the velocity,
                                 (20 rev) / (70/157 rev/s) = 44 6/7 s
Thus, the answer is approximately 44.9 seconds. 
You might be interested in
What does 2(5*-3) =
ladessa [460]

Answer:

-30

Step-by-step explanation:

<u>Step 1:  Multiply inside the parenthesis </u>

2(5 * -3)

2(-15)

<u>Step 2:  Multiply </u>

<u />2(-15)

2 * -15

-30

Answer:  -30

7 0
3 years ago
Please help me out am confused​
Kipish [7]

Answer:

Step-by-step explanation:

separate into squares

i separated it into three squares (rectangles);

9x5

3x2

3x2

find the area of the three then add, 45+6+6

Total Area = 57m^2

7 0
3 years ago
A production plant cost-control engineer is responsible for cost reduction. One of the costly items in his plant is the amount o
Ann [662]

Answer:

248.96

Step-by-step explanation:

From this regression output we have the MS Residual or mean squared error to be equal to 61983.1

the question requires us to find the standard error of the estimate. The standard error of the estimate can be gotten by finding the square root of the MSE.

\sqrt{61983.1}

= 248.96

the standard error of the estimate = 248.96

thank you!

6 0
3 years ago
Can someone quickly help me solve this ?!
Rainbow [258]

Answer: 8

Step-by-step explanation: if you count the angels and the sides then you'll get the answer 8..

7 0
3 years ago
Read 2 more answers
if a shape is a regular pentagon with five sides, which of the following must be true? Check all that apply
julsineya [31]

Answer:

A. It has reflectional symmetry

B. It is symmetrical

D. It has five lines of symmetry

Step-by-step explanation:

we know that

A regular pentagon has 5 sides and 5 lines of symmetry. The number of lines of symmetry in a regular polygon is equal to the number of sides

Every regular polygon has reflectional symmetry

Regular polygons are symmetrical

therefore

A. It has reflectional symmetry ------> Is true

B. It is symmetrical -----> Is true

C. It has exactly one line of symmetry ----> Is false

D. It has five lines of symmetry -----> Is true

4 0
3 years ago
Read 2 more answers
Other questions:
  • That Jeffrey says he has 6.8 dollars how do you write the decimal 6.8 when it refers to money explain
    12·1 answer
  • A clock shows 5:00. What time is it after the minute hand rotates 90 degrees?
    9·2 answers
  • Please help me with this and thank you
    5·1 answer
  • What is the value of the expression 2x^3 when x=-2 and y=3
    5·2 answers
  • 1. Which expression is equivalent to (2s + 8) - 201 - 4) + s(1 - 1)? (A) sr – 2r + 15 (B) 15T – Ir + 15 (C) sr+s – 2r + 16 (D) S
    11·1 answer
  • PLEASE HELP ME!!!!!!!!!!! NEED ANSWER IN LIKE 6 MINS!!!
    15·1 answer
  • Which algebraic expression represents the difference of e squared and twenty-one? A. E2+21 b.21 times e2 c. E2 - 21 d. 21 divide
    10·1 answer
  • Can someone please help me
    12·1 answer
  • Whould anyone mind helping please. The first box says 6.25x+12x=30.75 the second box says 6.25x+12=30.75 3rd box says 6.25x+30.7
    14·1 answer
  • Why are we teching hligh levels of math at lower grades
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!