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
Leni [432]
3 years ago
13

Jason designed an arch made of wrought iron for the top of a mall entrance. The 11 segments between the two concentric circles a

re each 1.25 m long. Find the total length of wrought iron used to make the structure. Round the answer to the nearest meter.

Mathematics
2 answers:
seropon [69]3 years ago
8 0

Answer:

57 m

Step-by-step explanation:

masha68 [24]3 years ago
7 0
Diameter of the bigger semi-circle is 15 m
circumference of the bigger semi-circle = πd = 15π

diameter of the smaller semi-circle = 15 - 2(1.25) = 15 - 2.5 = 12.5 m
circumference of the smaller semi-circle = πd = 12.5π m

Total length of the segments between the two circles = 11(1.25) = 13.75 m

Total length of wrought iron used = 15π + 12.5π + 13.75 = 100 m
You might be interested in
Sheri's brother gave Sam his collection of stamps when she left for college. At that
pychu [463]

Answer: $70 per year.

Step-by-step explanation:

Let's say that x is the number of years that has passed and y is how much the stamp is worth.

So we know that in zero years the stamp was worth $420 because that is the time Sheri gave her brother Sam the stamp. That could bring up the coordinates  (0,420) .

Now we know that in 8 years it was worth $980 and that could be the coordinates (8,980)

To find the rate of change we need to find the different between the y value and divide it by the difference in the x values.

420 - 980 = -560

 0-8 = -8

-560/-8 = 70

The rate of change is 70 which means that it grew by $70 every year.

6 0
3 years ago
A round race track has a radius of 75 yards. What is the circumference of the race track?
rjkz [21]

Answer:

471.24

Step-by-step explanation:

The formula for circumference is 2×pi×r. Replace the r with 75 and multiply.

8 0
2 years ago
Read 2 more answers
Write standard form<br> 5+0.5+0.03+0.006
zmey [24]

Answer:

5.5360

Step-by-step explanation:

I added

5+0.5= 5.5

5.5+0.03=5.53

5.53+0.006=

5.5360

3 0
3 years ago
Read 2 more answers
(a) The curve with equation y2 = x3 + 3x2 is called the Tschirnhausen cubic. Find an equation of the tangent line to this curve
Dafna1 [17]

Answer:

  (a)  y = 9/4x -1/4

  (b)  (-2, -2), (-2, 2)

  (c)  see below

Step-by-step explanation:

(a) The derivative can be found from ...

  2y·y' = 3x² +6x

At (x, y) = (1, 2), this is ...

  4y' = 9

  y' = 9/4

so the equation of the tangent is ...

  y = (9/4)(x -1) +2

  y = (9/4)x -1/4

__

(b) At y' = 0, we have ...

  0 = 3x² +6x = 3x(x +2)

This says y' = 0 at x=0 or x=-2. (x = 0 is an extraneous solution.)

At x = -2, we have ...

  y² = (-2)³ +3(-2)² = -8+12 = 4

  y = ±2

So, the horizontal tangent points are (x, y) = (-2, ±2).

5 0
3 years ago
Which graph does not repeat a function
lara31 [8.8K]

Answer: 4

Step-by-step explanation: You can test whether any graph is a function using the vertical line test, where you simply draw a vertical line through the graph. If you see that the vertical line comes in contact with the graph more than once at any given x-value, you know it isnt a funciton.

5 0
3 years ago
Other questions:
  • The Tampa Times polled 1,457 adults in the city to determine whether they put on their shirt before they put on their pants. Of
    8·1 answer
  • I need help it has to be correct
    9·1 answer
  • What is the distance -4 and 7 on a number line?
    13·1 answer
  • Please help......................
    10·1 answer
  • Please check all that apply.​
    6·2 answers
  • X+8 &gt; 18 how do you solve it
    7·1 answer
  • Solve for x. Enter your answer below as a fraction in lowest terms, using the
    8·1 answer
  • Random samples of of outh bass and smallmouth bass were taken from a lake, and their lengths in millimeters) were deter mined. W
    6·1 answer
  • What is 2 x 2 x 2 bob ross
    15·2 answers
  • Alonso leans a 28-foot ladder against a wall so that it forms an angle of 65° with the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!