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
ss7ja [257]
1 year ago
7

n example 3, your friend says that there is enough information to determine the numbers of solutions of the equations $3(5x+2)=1

5x$ and $-2(4y+1)=-8y-2$ once you obtain $15x+6=15x$ and $-8y-2=-8y-2$ . Is your friend correct?

Mathematics
1 answer:
mr_godi [17]1 year ago
6 0

The number of solutions of the equations can't be determined.

<h3>How to illustrate the information?</h3>

It should be noted an equation shows the relationship between the variables. It should be noted that the question is to find the number of solutions.

From the information, 3(5x + 2) = 15x

15x + 6 = 15x

Collect like terms

15x - 15x = - 6

0 = -6

Therefore, it can be see that the friend is incorrect as the number of solutions of the equations can't be determined.

Learn more about equations on:

brainly.com/question/2972832

#SPJ1

You might be interested in
Can someone help me with this problem? #32
Masja [62]

Answer:

answer is A but im sure you've gotten it by now

Step-by-step explanation:

8 0
3 years ago
A billboard designer has decided that a sign should have 4-ft margins at the top and bottom and 1-ft margins on the left and rig
givi [52]

An equation is formed of two equal expressions. The value of x that maximizes the area of the printed region of the billboard is 9.655 ft.

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given x is the left-right width of the billboard and y is the height of the billboard. Therefore,

The total area of the billboard, A= x·y

The total printed area of the billboard, A_p=(x-2)(y-8)

Given in problem that the area of the billboard is 3600 ft².

x·y = 3600

y = (3600)/x

Substituting the value of y in the equation of the total printed area of the billboard,

A_p = (x-2)(\dfrac{3600}{x}-8)\\\\A_p = 3600 -8x -\dfrac{7200}{x} + 16\\\\A_p =3616-8x - \dfrac{7200}{x}

Now, the value of x is needed to be minimum, therefore, differentiating the given function,

\dfrac{d}{dx}A_p =\dfrac{d}{dx}3616-8x - \dfrac{7200}{x}\\\\\dfrac{d}{dx}A_p =-8 - \dfrac{7200}{x^2}

Equate the differentiated function with 0,

0=-8x - \dfrac{7200}{x^2}\\\\8x = - \dfrac{7200}{x^2}\\\\x^3 = 900\\\\x = 9.655 ft.

Hence, the value of x that maximizes the area of the printed region of the billboard is 9.655 ft.

Learn more about Equation:

brainly.com/question/2263981

#SPJ1

4 0
2 years ago
Write an equation for the graph above
Marta_Voda [28]

Answer:

y = 1/2x + 0

Step-by-step explanation:

3 0
2 years ago
Which set is closed under the operation multiplication?
oee [108]
I have another set of choices here:

A. {0.5, 1, 2} 


B. {1, 2, 4} 


C. {1, 2, 3, 4, 5} 


<span>D. {0} 
</span>
If you multiply two numbers from a closed set the answer is in the set. 
<span>So A is not closed because 2 x 2 = 4 which isn't in the set. Only 0.5, 1, and 2 are in set A. </span>

<span>Try multiplying the largest numbers in sets B, C, and D by themselves. You will soon discover the closed set.</span>
3 0
3 years ago
1. If a = -1 , the value of3a + 1 is ​
erastovalidia [21]

Answer:

f(a) = 3a + 1 \\ Now,\: a =  - 1 \\ f( - 1) = 3( - 1) + 1 \\ f( - 1) =  - 3 + 1 \\ \boxed{ f( - 1) =  - 2}

  • Therefore, <em><u>-2</u></em> is the right answer.
6 0
2 years ago
Other questions:
  • Which of the following is the correct Ohm's law formula?
    5·1 answer
  • Solve 2/3 x- 1/3 &gt; 1<br> x &gt;
    9·1 answer
  • Quadrilateral ABCD has vertices at A(-2, -4), B(1, -1), C(-2, 2) and D(-5, -1). What is the name of the figure?
    5·1 answer
  • Which statement best describes how the volume of a square-based pyramid is related to the volume of a cube?
    9·1 answer
  • What is the equation of this line that models the data on the graph?<br> A. y= x/3 + 2<br> B. y=3x+2
    13·1 answer
  • Makayla is taking a math course and is working with the perimeter of rectangles. She knows the perimeter and length of her recta
    9·1 answer
  • Justin wants to buy a new pair of Jean's. If the jeans were originally $50.00, but are on sale with a 30% discount, how much wil
    7·1 answer
  • What are the two solutions to x( 2x - 5) = 0
    10·1 answer
  • X + y = 8<br> 2x2 – y = –5
    8·1 answer
  • Find the Unit Rate: Twenty emails in 5 minutes.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!