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
prohojiy [21]
3 years ago
15

Which expression is equivalent to|9q2 – (39 – 7) + 5q??

Mathematics
1 answer:
choli [55]3 years ago
5 0

Step-by-step explanation:

10q + 5

A. 5q + 5q + 5 is your answer, since 5q + 5q = 10q, and the question is 10q + 5

A) 5q + 5q + 5    

10q+5

Answer: 10q+5

hope this helps

You might be interested in
Consider the following differential equation. x^2y' + xy = 3 (a) Show that every member of the family of functions y = (3ln(x) +
Veronika [31]

Answer:

Verified

y(x) = \frac{3Ln(x) + 3}{x}

y(x) = \frac{3Ln(x) + 3 - 3Ln(3)}{x}

Step-by-step explanation:

Question:-

- We are given the following non-homogeneous ODE as follows:

                           x^2y' +xy = 3

- A general solution to the above ODE is also given as:

                          y = \frac{3Ln(x) + C  }{x}

- We are to prove that every member of the family of curves defined by the above given function ( y ) is indeed a solution to the given ODE.

Solution:-

- To determine the validity of the solution we will first compute the first derivative of the given function ( y ) as follows. Apply the quotient rule.

                          y' = \frac{\frac{d}{dx}( 3Ln(x) + C ) . x - ( 3Ln(x) + C ) . \frac{d}{dx} (x)  }{x^2} \\\\y' = \frac{\frac{3}{x}.x - ( 3Ln(x) + C ).(1)}{x^2} \\\\y' = - \frac{3Ln(x) + C - 3}{x^2}

- Now we will plug in the evaluated first derivative ( y' ) and function ( y ) into the given ODE and prove that right hand side is equal to the left hand side of the equality as follows:

                          -\frac{3Ln(x) + C - 3}{x^2}.x^2 + \frac{3Ln(x) + C}{x}.x = 3\\\\-3Ln(x) - C + 3 + 3Ln(x) + C= 3\\\\3 = 3

- The equality holds true for all values of " C "; hence, the function ( y ) is the general solution to the given ODE.

- To determine the complete solution subjected to the initial conditions y (1) = 3. We would need the evaluate the value of constant ( C ) such that the solution ( y ) is satisfied as follows:

                         y( 1 ) = \frac{3Ln(1) + C }{1} = 3\\\\0 + C = 3, C = 3

- Therefore, the complete solution to the given ODE can be expressed as:

                        y ( x ) = \frac{3Ln(x) + 3 }{x}

- To determine the complete solution subjected to the initial conditions y (3) = 1. We would need the evaluate the value of constant ( C ) such that the solution ( y ) is satisfied as follows:

                         y(3) = \frac{3Ln(3) + C}{3} = 1\\\\y(3) = 3Ln(3) + C = 3\\\\C = 3 - 3Ln(3)

- Therefore, the complete solution to the given ODE can be expressed as:

                        y(x) = \frac{3Ln(x) + 3 - 3Ln(3)}{y}

                           

Download docx
6 0
3 years ago
Lin rode her bike 2 miles in 8 minutes. She rode at constant speed what is the asnwer
sukhopar [10]
The velocity is 4. You didn’t say what you needed to find but I’m pretty sure it’s that
7 0
3 years ago
The perimeter of rectangular is 54 inches Its length is two times its width
USPshnik [31]
The length would be 18 inches and the width would be 9 inches since the length is twice its width and to find perimeter you do length x 2 and width x 2 and add it together so 18x2 = 36 and 9x2 = 18. 36 + 18 = 54
3 0
3 years ago
A donut shop made 12 dozen donuts to give to a school’s math club.
stepan [7]

Answer:

d=doughnuts

x=students in math club

1 dozen = 12d

/ = divided by

. = multiply

(12.12)/x=

4 0
3 years ago
How do you graph this ​
Trava [24]

Answer:

=6

Step-by-step explanation:

hat is this passage mostly about?

Click for the passage, "Studies in Ice."

A. Studying nature

B. Storing and moving ice safely

C. Powering drills with the sun

D. Saving messages in ice

3 0
3 years ago
Other questions:
  • How do you solve 2/7k - 3/8 = -19/8
    14·1 answer
  • If 6a+4b+c=-7, what is -2c-12a-8b
    8·1 answer
  • What is the slope and unit rate
    7·1 answer
  • the ohio state fair charges $8 for admission and 5$ for parking. after joey pays for admission and parking he plans to spend all
    9·1 answer
  • Find the value of each variable?
    6·2 answers
  • A group of randomly selected members of The Foodies Food Club were asked to pick their favorite type of food. The bar graph belo
    15·1 answer
  • A definition of Associative property for addition and multiplication
    10·1 answer
  • Please solve this. I'm stumped.
    12·1 answer
  • What is the circumference of the following circle?<br> diameter=9cm
    5·1 answer
  • I really hate to do this again-
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!