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Len [333]
4 years ago
7

A student bought 3 boxes of pencils and 2 boxes of pens for $6. He then bought 2 boxes of pencils and 4 boxes of pens for $8. Fi

nd the cost of each box of pencils and each box of pens
Mathematics
2 answers:
Annette [7]4 years ago
8 0
Let c and n represent the numbers of pencil and pen boxes, respectively
.. 3c +2n = 6.00
.. 2c +4n = 8.00

You can halve the second equation and subtract it from the first to get
.. (3c +2n) -(c +2n) = 6.00 -4.00
.. 2c = 2.00
.. c = 1.00

Then
.. 1.00 +2n = 4.00 . . . . . half the original second equation with c filled n
.. 2n = 3.00
.. n = 1.50

A box of pencils costs $1.00; a box of pens costs $1.50.
Vedmedyk [2.9K]4 years ago
7 0

Answer:

112 x 4

Step-by-step explanation:

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In the following question choose the odd one. a. J81 b. P256 c. G49 d.L144
saul85 [17]

Answer:

a

Step-by-step explanation:

Hello

J is the 10th letter of the alphabet and 10^2=10081

P is the 16th letter and 16^2=256\\

G is the 7th letter and 7^2=49

L is the 12th letter and 12^2=144

hope this helps

7 0
3 years ago
Please help meee!!! 11 points
Ludmilka [50]
Answer: The third answer Y = 2X + 3
7 0
3 years ago
Order these numbers from least to greatest.
joja [24]

Answer:

3.006, 3.06, 3.4, 3.4051

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Imagine that you are given two linear equations in slope-intercept form. You
murzikaleks [220]

The correct answer is option D.

<h3>What is Straight Line?</h3>

A straight line is an infinite length line that does not have any curves on it. A straight line can be formed between two points also but both the ends extend to infinity.

When two equations have same slope and their y-intercept is also the same, they are representing the line. In this case one equation is obtained by multiplying the other equation by some constant.

If we plot the graph of such equations they will be lie on each other as they are representing the same line. So each point on that line will satisfy both the given equations so we can say that such equations have infinite number of solutions.

Consider an example:

Equation 1: 2x + y = 4

Equation 2: 4x + 2y = 8

If you observe the two equation, you will see that second equation is obtained by multiplying first equation by 2. If we write them in slope intercept form, we'll have the same result for both as shown below:

Slope intercept form of Equation 1: y = -2x + 4

Slope intercept form of Equation 2: 2y = -4x + 8 , ⇒ y = -2x + 4

Both Equations have same slope and same y-intercept. Any point which satisfy Equation 1 will also satisfy Equation 2. So we can conclude that two linear equations with same slope and same y-intercept will have an infinite number of solutions.

Thus, the correct answer is option D.

Learn more about Straight line from:

brainly.com/question/20492082

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7 0
2 years ago
I really suck at algebra 2
Gnom [1K]

Answer:

-1

Step-by-step explanation:

5^(3b-1) = 5^(b-3)

3b-1=b-3    / +1 -b

2b = -2

b = -1

8 0
3 years ago
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