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
Firlakuza [10]
3 years ago
6

How many line segments are in the 20th figure?

Mathematics
1 answer:
Trava [24]3 years ago
5 0
The first figure has 3 line segments.

the second figure has 3+3 =3*2 =  6 line segments

the third figure has 3+3+3 = 3*3 = 9 line segments

the fourth figure has 3+3+3+3=3*4=12 line segments...


so it is clear that:

the 20th figure has 3*20=60 line segments.


Answer: 60
You might be interested in
You make a time capsule with your friends. Find the surface area of the shape pictured. Use 3.14 to approximate pi.
Orlov [11]

Answer: 1,475.8mm^{2}

Step-by-step explanation:

1. If you join the top part and the bottom part of the figure, you obtain a sphere. Then, you must apply the formula for calculate the surface area of a sphere:

SA_s=4r^{2}(3.14)

Where r is the radius (r=\frac{10mm}{2}=5mm)

2. Then:

SA_s=4(5mm)^{2}(3.14)=314mm^{2}

3. The formula for calculate the suface area of the red part, which is a cylinder, is:

SA_c=2(3.14)(r)(h)

Where h is the height (h=32mm)

4. Then:

SA_c=2(3.14)(5mm)(32mm)=1,004.8mm^{2}

5. So, the total surface area is:

SA_t=314mm^{2}+1,004.8mm^{2}=1,318.8mm^{2}

6 0
3 years ago
Find the next three terms.<br> -32, -16, -8,...
gtnhenbr [62]

Answer:

-4,-2,-1

Step-by-step explanation:

The next term is going to be the previous number divided by two

8 0
2 years ago
3x + 2y = 12<br> -x + 5y = 13<br> Solve by elimination <br> Y and x
Natalka [10]

Answer:

x = 2 y = 3

Step-by-step explanation:

8 0
2 years ago
For f(x)= x+5 and g(x)=4x+2 <br> find (fog)(x) And (gof)(x)
Svetllana [295]

Composing functions means that the input of the outer functions is the output of the inner function.

In fact, you can rewrite the circle notation as

(f\circ g)(x)=f(g(x)),\quad (g\circ f)(x)=g(f(x))

So, we can substitute g(x) with its expression:

(f\circ g)(x)=f(g(x))=f(4x+2)

And since f(x)=x+5, we simply have to add 5 to its input:

f(4x+2)=(4x+2)+5=4x+7

Similarly, we have, substituting f with its expression,

(g\circ f)(x)=g(f(x))=g(x+5)

And since g(x)=4x+2, we have to multiply the input by 4 and add 2:

g(x+5)=4(x+5)+2=4x+20+2=4x+22

7 0
3 years ago
I need geometry help please.
irina1246 [14]

Lets remember the property "alternative-interior angles" when we have parallels lines:

Given two paralles lines, the following is true:

In our question, we have:

We know that the angles J + P + K=180

So, the triangles have all the angles the same, so they are similar by angle-angle-angle, and they have one side congruent, AC=CD, so the triangles are congruents.

6 0
1 year ago
Other questions:
  • If a person's eye level is h meters above sea level and he can see d kilometers to the horizon, then d=3.57h. Suppose the person
    14·1 answer
  • A manufacturer needs 57 pounds of grapes to make 24 cartons of raisins. how many pounds of grapes would the manufacturer need to
    9·1 answer
  • 8 increased by three times a number
    7·1 answer
  • ABCD is a square. what is the measure of angle BAC
    15·2 answers
  • Help please. time is really hard for me! Thanks
    11·2 answers
  • Identify if the line has a positive or negative slope. Calculate the slope of the line 2y = x - 8​
    9·1 answer
  • Julie is roller skating. She can skate 16 mile in 2 minute. What is Julie's rate in miles per minute?
    11·2 answers
  • I need help quick plz​
    8·2 answers
  • Need solved asap somebody
    13·1 answer
  • PLEASE HELP ASAP!! the slope of a line is -2. Two points on the line are (eight, a) and (2, 4). what is the value of a? ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!