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
stealth61 [152]
4 years ago
13

The sum of a number and eight is zero

Mathematics
1 answer:
vodomira [7]4 years ago
4 0
-8
-8+8=0
Good luckkkkk
You might be interested in
Find the area of the surface correct to four decimal places by expressing the area in terms of a single integral and using your
love history [14]

If we substitute x=r\cos\theta and y=r\sin\theta, we get r^2=x^2+y^2, so that

z=\cos(x^2+y^2)=\cos(r^2)

which is independent of \theta, which in turn means the surface can be treated like a surface of revolution.

Consider the function f(t)=\cos(t^2) defined over 0\le t\le1. Revolve the curve C described by f(t) about the line t=0. The area of the surface obtained in this way is then

\displaystyle2\pi\int_C\mathrm dS=2\pi\int_0^1\sqrt{1+f'(t)^2}\,\mathrm dt

=\displaystyle2\pi\int_0^1\sqrt{1+(-2t\sin(t^2))^2}\,\mathrm dt

=\displaystyle2\pi\int_0^1\sqrt{1+4t^2\sin^2(t^2)}\,\mathrm dt\approx7.4144

4 0
3 years ago
You are a member of your local movie theater’s club. Every time you see a movie at the theater, you earn 2 advantage points. Whe
Snowcat [4.5K]

You have to watch 30 movies to earn a free movie pass.

Step-by-step explanation:

Given,

Points earned for each movie = 2 points

Current points = 40 points

Free movie pass = 100 points

Let,

x be the number of movies you have to watch.

2*number of movies + current points = 100

2x+40=100

Subtracting 40 from both sides

2x+40-40=100-40\\2x=60

Dividing both sides by 2

\frac{2x}{2}=\frac{60}{2}\\x=30

You have to watch 30 movies to earn a free movie pass.

Keywords: linear equation, division

Learn more about division at:

  • brainly.com/question/2821386
  • brainly.com/question/2860697

#LearnwithBrainly

5 0
3 years ago
You want to buy a pet rabbit that costs ​$49. You already have ​$18 and you plan to save ​$9 per week. If w represents the numbe
kap26 [50]

18 + 9x = 49

with the use of an equation you can easily find out if 6 weeks of saving up is enough to get the rabbit.

18 + 9(6) \neq 49

9 x 6 = 54

54 + 18 = 72

you could have enough money in 4 weeks

8 0
3 years ago
HELP ME PLZZZ QUICK :((
sveticcg [70]

Answer: the answer is 20

Step-by-step explanation:

I did the test it is the answer if you need help with another one let me know and ill help with the next problem

4 0
3 years ago
C=2(3.14)r; c=14(3.14) solve for r
tekilochka [14]

Answer:

c=2(3.14)r

given c=14(3.14), then r

make r the subject formula and substitute given c=14(3.14)

r=c/2(3.14)

r=14(3.14)/2(3.14)

r=7

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • A small plane traveled from city a to city​ b, averaging 169169 miles per hour. the trip took twotwo hours. what is the distance
    15·1 answer
  • S=(n-2) * 180. Solve for n.
    7·2 answers
  • What is x, y, and z?
    8·1 answer
  • Mary has a bookcase with 5 shelves. There are C books on each shelf. Using C, write an expression for the total number of books.
    13·2 answers
  • The table represents the total miles traveled, y, after a number of hours, x.
    5·2 answers
  • Please help I need a better grade in this class.
    11·1 answer
  • Pls wat is 2.66 in fraction
    5·1 answer
  • What is the slope of the line passing through the point(2,-1) and the origin.
    13·1 answer
  • Does 4/9 round to 0, 1/2, or 1?<br><br> A 0<br><br> B 1/2<br><br> C 1
    6·2 answers
  • Tara placed $1200 in a savings account which compounds interest continuously at a rate of 1.4%.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!