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
AlladinOne [14]
3 years ago
11

Please help me with this question

Mathematics
2 answers:
insens350 [35]3 years ago
6 0
D because its says 180°
daser333 [38]3 years ago
3 0
I'm guessing "D" but I might be wrong

You might be interested in
A farmer has a circular shaped field. Fertilizer
Aleonysh [2.5K]

Answer:

It will be $5 per square yard

Step-by-step explanation:

4 0
3 years ago
Which fraction is larger 2/3 or 15/18
kirza4 [7]
The answer is 15/18
because if you just put 15/18 it will give you <span>0.83333333333
and for 2/3 it will give you </span><span>0.66666666666
and we all know which number is bigger.
Hope this helps</span>
7 0
3 years ago
For question 3, use the Pythagorean Theorem.
Juliette [100K]

Step-by-step explanation:

can't really use the Pythagorean because you don't know this is a right triangle.

use the fact that they are similar

so

3/6 = x/12 where x is FE

cross multiply

6x = 36 therefore FE = 6

then 6/12 = y/9 where y is FD

cross multiply

12y = 54 = 54/12 therefore FD = 4.5

3 0
3 years ago
What is the circumference of a circle with a diameter of 2.9 cm?​
slega [8]

Answer:

The answer is 9.111

7 0
3 years ago
Read 2 more answers
A door of a lecture hall is in a parabolic shape. The door is 56 inches across at the bottom of the door and parallel to the flo
Arada [10]

Answer:

The parabolic shape of the door is represented by y - 32 = -\frac{2}{49}\cdot x^{2}. (See attachment included below). Head must 15.652 inches away from the edge of the door.

Step-by-step explanation:

A parabola is represented by the following mathematical expression:

y - k = C \cdot (x-h)^{2}

Where:

h - Horizontal component of the vertix, measured in inches.

k - Vertical component of the vertix, measured in inches.

C - Parabola constant, dimensionless. (Where vertix is an absolute maximum when C < 0 or an absolute minimum when C > 0)

For the design of the door, the parabola must have an absolute maximum and x-intercepts must exist. The following information is required after considering symmetry:

V (x,y) = (0, 32) (Vertix)

A (x, y) = (-28, 0) (x-Intercept)

B (x,y) = (28. 0) (x-Intercept)

The following equation are constructed from the definition of a parabola:

0-32 = C \cdot (28 - 0)^{2}

-32 = 784\cdot C

C = -\frac{2}{49}

The parabolic shape of the door is represented by y - 32 = -\frac{2}{49}\cdot x^{2}. Now, the representation of the equation is included below as attachment.

At x = 0 inches and y = 22 inches, the distance from the edge of the door that head must observed to avoid being hit is:

y -32 = -\frac{2}{49} \cdot x^{2}

x^{2} = -\frac{49}{2}\cdot (y-32)

x = \sqrt{-\frac{49}{2}\cdot (y-32) }

If y = 22 inches, then x is:

x = \sqrt{-\frac{49}{2}\cdot (22-32)}

x = \pm 7\sqrt{5}\,in

x \approx \pm 15.652\,in

Head must 15.652 inches away from the edge of the door.

8 0
3 years ago
Other questions:
  • How can you find the area of an irregular polygon using area formulas?
    7·1 answer
  • Helpppppppppp aasapppp
    7·2 answers
  • The combined land area of the countries A and B is 178,973 square kilometers. Country A is larger by 373 square kilometers. Dete
    5·1 answer
  • Help please will mark brainliest!!!
    10·1 answer
  • Please I need help it’s an emergency
    8·1 answer
  • Find the value of x and y​
    15·2 answers
  • Divide 2.2 and 41.5 :)
    8·1 answer
  • If 10 litres of petrol can cost 650 calculate the cost of 15 Litres and 25 litres​
    13·1 answer
  • 1. Which is the better deal?
    11·2 answers
  • =<br> A<br> C<br> F<br> xº<br> E<br> G<br> 80°<br> 160°<br> D<br> B
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!