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
aleksley [76]
3 years ago
10

Question #5: Solve the system of equations below using substitution.

Mathematics
1 answer:
RSB [31]3 years ago
6 0

I need someone to find a mistake in my soliution or maybe to solf it much more easily... I have got a sum  

1+

1

4⋅

2

4

+

1

7⋅

2

7

+

1

10⋅

2

10

+⋯

1+14⋅24+17⋅27+110⋅210+⋯

and need to evaluate it. So here's my soliution:  

S(x)=1+

x

4

4⋅

2

4

+

x

7

7⋅

2

7

+

x

10

10⋅

2

10

+⋯=1+

∑

n=1

∞

x

3n+1

(3n+1)⋅

2

3n+1

=1+

S

1

(x)

You might be interested in
How much water should be mixed with 237 ml of​ ammonia, whose strength is​ 100%, in order to create a mixture that is diluted to
Vedmedyk [2.9K]
Let the x ml of water be mixed with 237 ml of ammonia whose strength is 100%,  in order to create a mixture of 75% strength.
The equation required to solve this will be:
237/(237+x)=75/100
solving for x we get:
237/(237+x)=3/4
237×4=3(237+x)
948=711+3x
3x+711=948
3x=948-711
3x=237
x=237/3
x=79 ml
therefore the amount of water to be added will be 79 ml

3 0
3 years ago
Read 2 more answers
Solve xy^m=yx^3 for m
aleksklad [387]

Answer:

  m = 1 + 2log(x)/log(y)

Step-by-step explanation:

Taking logarithms, you have ...

  log(x) +m·log(y) = log(y) +3log(x)

  m·log(y) = log(y) +2·log(x) . . . . subtract log(x)

  m = (log(y) +2·log(x))/log(y) . . . divide by the coefficient of m

  m = 1 +2·log(x)/log(y) . . . . . . . simplify a bit*

_____

* The "simplified" form will depend on your preference. Here, I like the integer 1 brought out because most logs are irrational. The result may be very slightly more accurate if we add 1, rather than log(y)/log(y)--depending on your calculator.

6 0
3 years ago
What is the slope of the proportional relationship, and how can I graph it?
MArishka [77]

Answer:

I would say 5.2 .

Step-by-step explanation:

if I’m wrong, I’m sorry. If I’m right, mark me brainlest!

4 0
2 years ago
Raymond bought 3/4 of a dozen rolls. How many rolls did he buy?
Step2247 [10]
Raymond bought 9 rolls because you divide 3 and 4 to get 0.75 and multiply it by 12 to get 9 rolls 
8 0
3 years ago
Read 2 more answers
Select all names that apply to the number. The length of the side of a square that has an area of 77 square yards.
Mashcka [7]

The length of the side would be sqrt(77) = 8.7749.....

This can be classified as two answers:

A and D

This is a real number

It is also an irrational number because it can’t we written as a simple fraction.

3 0
3 years ago
Other questions:
  • What is the probability of not rolling a number larger than 4 with a fair die?
    5·1 answer
  • ((Pls help need then to get my grade up))
    15·1 answer
  • Solve 7(x + 2) = -49
    14·2 answers
  • PLZ HELP I NEED MY GRADES UPPPPP!!
    15·2 answers
  • Please give me the correct answer.Only answer if you're very good at math.Please don't put a link to a website.​
    5·2 answers
  • Which two expressions are equivalent?
    7·1 answer
  • Yx divide 2 use x=7 and y=2
    14·1 answer
  • Identify each triangle based on angles. (Acute, Obtuse or Right)please I don’t understand this
    9·2 answers
  • What is (9−7)×9−9+3? Use order of operations to evaluate the expression below.
    5·1 answer
  • Lucy bought three books at a bookstore. Here are their prices (in dollars).
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!