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grin007 [14]
3 years ago
15

7x + 5 = 3x - 15solve for x​

Mathematics
2 answers:
jek_recluse [69]3 years ago
6 0

Answer:

7x+5=3x-15 x=-5

Step-by-step explanation:

Subtract from both sides

7x+5-5=3x-15-5

{Simplify}

7x=3x-20

{Subtract}{3x from both sides}

7x-3x=3x-20-3x

{Simplify}

4x=-20

Divide both sides by 4

4x over 4= -20 over 4

 {Simplify}  

  x=-5

Digiron [165]3 years ago
4 0

7x +5 = 3x -15

4x = -20

x = -5

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A theater contains 460 seats and the ticket prices for a recent play were $52 for adults and $26 for children. If the total proc
Vlada [557]

Answer:

The answer to your question is There were sold 166 adult tickets and 294

                                                     children tickets.

Step-by-step explanation:

Data

Total number of seats = 460

cost for adults = a = $52

cost for children = c = $26

Total cost = $16276

Process

1.- Write equations to solve this problem

              a + c = 460                    Equation l

         52a + 26c = 16276             Equation ll

2.- Solve the system of equation by substitution.

-Solve equation l for a

             a = 460 - c

-Substitute a in equation ll

         52(460 - c) + 26c = 16276

-Expand

         23920 - 52c + 26c = 16276

-Simplify

                     -26c = 16276 - 23920

                     -26c = -7644

                          c= -7644/-26

                          c = 294

3.- Find a

                        a = 460 - 294

                        a = 166

8 0
3 years ago
Read 2 more answers
If u(x)= x^5-x^4+x^2 and v(x)= -x^2, which expression is equivalent to (u/v)(x)? Ox^3-x^2 O -x^3+x^2 O-x^3+x^2-1 Ox^3-x^2+1​
djverab [1.8K]

Answer:

  • C. -x^3 + x^2 - 1

Step-by-step explanation:

<u>Given</u>

  • u(x) = x^5 - x^4 + x^2 and v(x) = -x^2

<u>(u/v)(x) = </u>

  • (x^5 - x^4 + x^2) /(- x^2) =
  • - (x^3 - x^2 + 1) =
  • -x^3 + x^2 - 1

Correct option is C

3 0
3 years ago
Compare fraction 2over 3 and 7 over 8 which is greater
Paul [167]
If you use a calculator to find the exact decimal of these fractions, you can easily find this out.

2/3 as a decimal equals:  0.6666 (repeating sixes)

7/8 as a decimal equals:  0.875

0.875 > 0.666

7/8 > 2/3

7 over 8 is greater!  Hope this helps! :)
5 0
3 years ago
Read 2 more answers
A pair of equations which has a unique solution x=2 y=-3​
nignag [31]

x=2, y=3 is a pair of a equations right there, so a correct solution.

How about another linear system?

Answer: x+y=5, 10x + y = 23

8 0
4 years ago
1) (19-16), (-7,-15)​
max2010maxim [7]

Answer:

your answer is -285,112

Step-by-step explanation: first you do this

\frac{y1}{y2} \frac{x1}{x2} \\

the numders should go like this

\frac{-15}{-16} \frac{-7}{19}

then you cross multiply

-15*(19)\\-7*(-16)

the answers to the multiplication

-15*(19)= -285\\-7*(-16)=112

the answer is

-285,112

4 0
3 years ago
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