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3 years ago

A store sells packages of pencils.which package offers the best unit price

1 answer:

7 0

The details of the packages are not posted, however I can tell you how to find the answer.

First determine how many pencils are in each pack.
Then divide the price of the pack by the number of pencils to find out which pack has the least cost per pencil. To put this in equation form:
$\frac{Cost}{Pencils}$

Whichever pack has the least cost per pencil is the one that is the best priced.

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When *Attached image* is solved for w, one equation is ______. Which of the following is an equivalent equation to find w?

m_a_m_a [10]

It is the second answer:

8x²/y -2 is a solution which is equivalent to (8x²-2y)/2. Proof:

Reduce 8x²/y -2 to the same denominator:

8x²/y - 2y/y = (8x² - 2y)/y

8 0

3 years ago

Sue has $2.20 in dimes and nickels. If she has 13 more dimes than nickels, how many of each coin does she have?

dem82 [27]

10d+5n=220
divide both sides by 5
2d+n=44

d=13+n
sub 13+n for d in other equatin

2(13+n)+n=44
26+2n+n=44
26+3n=44
minus 26 both sides
3n=18
divide both sides by 3
n=6
sub back

d=13+n
d=13+6
d=19

19 dimes
6 nickles

4 0

3 years ago

What’s the algebraic expression for this

Julli [10]

Answer:

1 3 6 10 15

Step-by-step explanation:

brainliest plz

6 0

3 years ago

Triangle Congruence:

Serga [27]

Where are the triangles so I can compare to find the triangle congruence?

8 0

3 years ago

Read 2 more answers

14.What is the solution of the system?

Archy [21]

Answer:

14. x=-2.5, y = -7

15. x=28 y = -20

Step-by-step explanation:

14. Let's solve this system by elimination. Multiply the first equation by -1.

-1*(4x-y)= -1*(- 3)

-4x +y = 3

Then add this to the second equation.

-4x+y = 3

6x-y= - 8

--------------

2x = -5

Divide each side by 2

x = -2.5

We still need to find y

-4x+y =3

-4(-2.5) + y =3

10 +y =3

Subtract 10 from each side.

y = 3-10

y = -7

15.I will again use elimination to solve this system, because using substitution will give me fractions which are harder to work with. I will elimiate the y variable. Multiply the first equation by 11

11( 5x+6y)= 11*20

55x+66y = 220

Multiply the second equation by -6

-6(9x+11y)=32*(-6)

-54x-66y = -192

Add the modified equations together.

55x+66y = 220

-54x-66y = -192

---------------------------

x = 28

We still need to solve for y

5x+6y = 20

5*28 + 6y =20

140 + 6y = 20

Subtract 140 from each side

6y = -120

Divide by 6

y = -20

3 0

3 years ago