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
Lena [83]
3 years ago
6

Cho phương trình: x1 + x2 + x3 + x4 + x5 = 30 (*)

Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0

Answer:

Step-by-step explanation:

ngu dot

You might be interested in
Simplify. 46 4 x 4 x 4 x 4 x 4 x 4 6 x 6 x 6 x 6 4 + 4 + 4 + 4 + 4 + 4 6 + 6 + 6 + 6
Brums [2.3K]

this is screenshot of my computer HTML

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

7 0
3 years ago
What is the sum of a 56-term arithmetic sequence where the first term is 6 and the last term is 391?
Sati [7]
S_n=\dfrac{a_1+a_n}{2}\cdot n\\\\a_1=6;\ n=56;\ a_{56}=391\\\\subtitute\\\\S_{56}=\dfrac{6+391}{2}\cdot56=\dfrac{397}{2}\cdot56=397\cdot28=11,116
7 0
3 years ago
Read 2 more answers
Triangle ABC is such that AB = 3cm , BC = 4cm , angle ABC = 120 and BAC = theta : Write down in terms of theta , and expression
lakkis [162]
1)inside the triangule is 180º .There are 3 angules, one with 120º, theta and
angle ACB, lets call it x.

x + theta + 120 = 180
x + theta= 180-120
x + theta= 60
x= 60- theta
angle ACB= 60- theta
8 0
4 years ago
**GIVING OUT BRAINLIEST PLEASE HELP***
OLga [1]

Answer:

n is less than or equal to: 10

Step-by-step explanation:

10n+20=120

subtract 20

10n=100

divide by 10

n=10

7 0
3 years ago
Read 2 more answers
A ball of radius 15 has a round hole of radius 5 drilled through its center. Find the volume of the resulting solid. Hint: The u
OverLord2011 [107]

Answer:

The volume of the ball with the drilled hole is:

\displaystyle\frac{8000\pi\sqrt{2}}{3}

Step-by-step explanation:

See attached a sketch of the region that is revolved about the y-axis to produce the upper half of the ball. Notice the function y is the equation of a circle centered at the origin with radius 15:

x^2+y^2=15^2\to y=\sqrt{225-x^2}

Then we set the integral for the volume by using shell method:

\displaystyle\int_5^{15}2\pi x\sqrt{225-x^2}dx

That can be solved by substitution:

u=225-x^2\to du=-2xdx

The limits of integration also change:

For x=5: u=225-5^2=200

For x=15: u=225-15^2=0

So the integral becomes:

\displaystyle -\int_{200}^{0}\pi \sqrt{u}du

If we flip the limits we also get rid of the minus in front, and writing the root as an exponent we get:

\displaystyle \int_{0}^{200}\pi u^{1/2}du

Then applying the basic rule we get:

\displaystyle\frac{2\pi}{3}u^{3/2}\Bigg|_0^{200}=\frac{2\pi(200\sqrt{200})}{3}=\frac{400\pi(10)\sqrt{2}}{3}=\frac{4000\pi\sqrt{2}}{3}

Since that is just half of the solid, we multiply by 2 to get the complete volume:

\displaystyle\frac{2\cdot4000\pi\sqrt{2}}{3}

=\displaystyle\frac{8000\pi\sqrt{2}}{3}

5 0
4 years ago
Other questions:
  • Please help with how to find the area of the shape with work
    12·1 answer
  • Let abe a finite set and let a∈a. prove that the number of subsets of a that contain a1 equals the number of subsets of a that d
    9·1 answer
  • Please help, I need to find the area, circumference, and radius
    13·1 answer
  • The inverse of a function is a function. always /sometimes /never
    9·2 answers
  • Help pls due by 12 :/
    6·1 answer
  • Trevor’s science class is studying rainfall on the first day of every month for one year. Explain why this would not represent t
    5·2 answers
  • Answer the question in the pic :)
    12·1 answer
  • Solve this equation:<br> 7x - [5 + (3x - 2)] = x - (4x - 5) + (2x - 1)
    6·1 answer
  • 6b+bx=ax+a2 solve for x
    5·2 answers
  • Solve pls brainliest
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!