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
Andrej [43]
2 years ago
13

PLEASEEEEEEEE HELPPPPPP ME

Mathematics
2 answers:
GarryVolchara [31]2 years ago
8 0

Answer:

3) D = 11.99

4) A = 113.09

5) C = 7.53

6) C = 53.40

7) A = 113.09

Step-by-step explanation:

3) D = C ÷ π

D = (37.68) ÷ π

D = 11.9

4) R = D ÷ 2

R = (12) ÷ 2 = 6

A = πr^2

A = π 6^2

A = 113.09

5) C = 2πr

C = 2π (1.2)

C = 7.53

6) R = D ÷ 2

R = (17) ÷ 2

R = 8.5

C = 2πr

C = 2π (8.5)

C = 53.40

7) A = πr^2

A = π 6^ 2

A = 113.09

Contact [7]2 years ago
7 0

Answer: Hi! All of the answers and work are below. Please double check on your work just to make sure. Hope this helped! :)

Step-by-step explanation:

attached below :)

You might be interested in
How to convert degrees minutes seconds to decimal degrees by hand?
Thepotemich [5.8K]
Multiply secondsn by 60 add to minutes multiply by 60 and to degrees
5 0
2 years ago
A boat on a river travels downstream between two points, 90 mi apart, in 1 h. The return trip against the current takes 2 1 2 h.
docker41 [41]

Answer:

A)63miles per hour.

B)27 miles per hour

Step-by-step explanation:

HERE IS THE COMPLETE QUESTION

boat on a river travels downstream between two points, 90 mi apart, in 1 h. The return trip against the current takes 2 1 2 h. What is the boat's speed (in still water)??b) How fast does the current in the river flow?

Let the speed of boat in still water = V(boat)

speed of current=V(current)

To calculate speed of boat downstream, we add speed of boat in still water and speed of current. This can be expressed as

[V(boat) +V(current)]

It was stated that it takes 1hour for the

boat to travels between two points of 90 mi apart downstream.

To calculate speed of boat against current, we will substact speed of current from speed of boat in still water. This can be expressed as

[V(boat) - V(current)]

and it was stated that it takes 2 1/2 for return trip against the Current

But we know but Speed= distance/time

Then if we input the stated values we have

V(boat) + V(current)]= 90/1 ---------eqn(1)

V(boat) - V(current) = 90/2.5----------eqn(2)

Adding the equations we have

V(boat) + V(current) + [V(boat) - V(current)]= 90/2.5 + 90/1

V(boat) + V(current) + V(boat) - V(current)]=90+36

2V(boat)= 126

V(boat)=63miles per hour.

Hence, Therefore, the speed of boat in still water is 63 miles per hour.

?b) How fast does the current in the river flow?

the speed of the current in the river, we can be calculated if we input V(boat)=63miles per hour. Into eqn(1)

V(boat) + V(current)]= 90/1

63+V(current)=90

V(current)= 27 miles per hour

Hence,Therefore, the speed of current is 27 miles per hour.

7 0
3 years ago
Is F(x)= X^2(X^2+9)(X^3+2X) even or odd
dexar [7]

Answer:

The function is odd.

Step-by-step explanation:

A function is even if the graph of the function is symmetric with respect to the y-axis. A function is odd if the graph of the function is symmetric with respect to the origin. To find if the function is even or odd, we're going to graph the function using DESMOS.

As you can see in the attached picture, the function is symmetric with respect to the origin. Therefore, the function is odd.

4 0
3 years ago
45 centimeters is equal to how many inches
Solnce55 [7]

Answer:

Around 17.716 inches

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Erify that f has an inverse. then use the function f and the given real number a to find (f −1)'(a). (hint: see example 1. if an
zhannawk [14.2K]

The function

... f(x) = (x+2)/(x-1) = 1 + 3/(x-1)

is symmetrical about the line y=x, hence is its own inverse.


We can evaluate the desired derivative directly.

... f'(x) -3/(x-1)²

so f'(2) is

... f'(2) = -3/(2-1)²


(f^{-1})(2)=-3

8 0
3 years ago
Other questions:
  • Plot the point (0,6), (3,15.8) and (9.5,0) using the graphing tool, and find the function
    6·2 answers
  • An 18-ounce energy drink contains 12 1/2 teaspoons of sugar. How much sugar is one ounce of the drink?
    8·2 answers
  • A sample proportion is always equal to the corresponding population proportion
    7·1 answer
  • Can you help me with all of them
    13·1 answer
  • What is the length of segment AB? (4 points)<br> 10<br> 12<br> 13<br> 15
    14·1 answer
  • Hi I really need Help Please!! Jim's car repair charges $50 plus $16 for every pint of oil. Sam's car repair charges $80 plus $1
    15·1 answer
  • Helpppp me plz i need help​
    11·1 answer
  • The volume of a rectangular prism (shown below) is 48x^3+56x^2+16x Answer the following questions:
    10·1 answer
  • your sister is selling girl scout cookies that cost $4.25 a box. your family bought 6 boxes. how many more boxes of cookies must
    12·1 answer
  • 22, 66, 198, ...<br> Find the 8th term.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!