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
Zepler [3.9K]
2 years ago
10

The telephone company purchased 192 yards of wire for $2,304 in January. They

Mathematics
2 answers:
Aleks [24]2 years ago
6 0

Answer:

Step-by-step explanation:

400yd($2304/192yd)=$4800

kirill [66]2 years ago
6 0

Answer:

400 yards of wire will cost $4,800

Step-by-step explanation:

First find the cost per yard of wire by using the equation 2,304/192 which equals 12/1, which is $12 per yard of wire. Next multiply that by 400 to get $4800, which is the total February purchase cost.

You might be interested in
Laura wrote and solved the following expression to find the total number of beads Lina has if there are 6 beads in each packet.
bulgar [2K]
<h3>The number of beads lina has is 31</h3><h3>Laura made a mistake by adding the constant 7 and variable 4b</h3>

<em><u>Solution:</u></em>

Given that,

Laura wrote and solved the following expression to find the total number of beads Lina has

There are 6 beads in each packet

7+4b = 11b

= 11(6)

=66

From given,

Lina has a total of 7 + 4b beads

Given that, There are 6 beads in each packet

Substitute b = 6

7 + 4(6)

Simplify

7 + 24

Add

31

Thus, she has a total of 31 beads and not 66 beads

Laura made a mistake by adding the constant 7 and variable 4b

But a constant and variable cannot be added

4 0
3 years ago
Solve the system by using elementary row operations on the equations. Follow the systematic elimination procedure.
Natali5045456 [20]

Answer:

Step-by-step explanation:

The given equation is expressed as

x1 + 2x2 = -24- - - - - - - - --1

x1 + 7x2 = -11- - - - - - - --2

We would eliminate x1 by subtracting equation 2 from equation 1. It becomes

- 5x2 = - 13

Dividing both sides of the equation by - 5, it becomes

- 5x2/- 5 = - 13/- 5

x2 = 13/5

Substituting x2 = 13/5 into equation 2, it becomes

x1 + 7 × 13/5 = -11

x1 + 91/5 = - 11

x1 = - 11 - 91/5

x1 = - 146/5

4 0
3 years ago
9/20
Stella [2.4K]

<u>Question:</u>

Find the number of real number solutions for the equation. x^2 + 5x + 7 = 0

<u>Answer:</u>

The number of real solutions for the equation x^{2}+5 x+7=0 is zero

<u>Solution:</u>

For a Quadratic Equation of form : a x^{2}+b x+c=0  ---- eqn 1

The solution is x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}  

Now , the given Quadratic Equation is x^{2}+5 x+7=0  ---- eqn 2

On comparing Equation (1) and Equation(2), we get

a = 1 , b = 5 and c = 7

In x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a} , b^2 - 4ac is called the discriminant of the quadratic equation

Its value determines the nature of roots

Now, here are the rules with discriminants:

1) D > 0; there are 2 real solutions in the equation

2) D = 0; there is 1 real solution in the equation

3) D < 0; there are no real solutions in the equation

Now let solve for given equation

D= b^2 - 4ac\\\\D = 5^2 - 4(1)(7)\\\\D = 25 - 28 \\\\D = -3

Since -3 is less than 0, this means that there are 0 real solutions in this equation.

4 0
3 years ago
Work out the difference between 38.3 and 1.72​
Bumek [7]

Answer:

36.58

Step-by-step explanation:

38.3-1.72=36.58

7 0
2 years ago
Read 2 more answers
Help geometry ……………..
Nina [5.8K]

Answer:

Angle F

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which is the closest to the circumference of a circle with a diameter of 17 inches?
    10·1 answer
  • I'm kind of unsure of my answer, please help me. I appreciate your answers.
    9·2 answers
  • What is the difference between associative and commutative property?
    11·1 answer
  • What is the residual of a week in which a barrel of crude oil costs $60 and a barrel of jet fuel costs $78?
    5·1 answer
  • Write the equation of the line that has an undefined slope and passes through the point (3,5)
    11·1 answer
  • James said that he would need 25 red beads to make
    13·1 answer
  • What is the reciprocal of 6/9​
    14·2 answers
  • How do I do this?? Help plse!
    15·1 answer
  • The quotient of s and 5<br>​
    12·2 answers
  • 11) Jose's family put $400 in a guaranteed stock fund earning 14% interest per
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!