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mihalych1998 [28]
3 years ago
5

Three packages of pens and one box of paper cost $26. Two packages of pens and 7 boxes of paper cost $49. How much does one box

of paper cost?
Mathematics
1 answer:
algol133 years ago
5 0

Answer:

5 dollars

Step-by-step explanation:

Let's call the price of a package of pens n, and the cost of a box of paper r.

3n+r=26

2n+7r=49

Multiply the first equation by 7:

21n+7r=182

Subtract the second equation from the first:

19n=133

Divide both sides by 19 to isolate n:

n=7

Plug this back in to find the value of a box of paper:

3(7)+r=26

21+r=26

r=5

Hope this helps!

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Area is 96 length is 4x+8 width is x find x
dimulka [17.4K]

Answer

Step-by-step explanation:

The area would be length times width. x(4x+8) =96

4x^2+8x = 96

4x^2+8x-96=0. We need to factor.

It would be factored to (4x-16)(x+6) = 0

x would be -6 (x+6=0)

or x would be 4 (4x-16=0)

Why would the width be negative?!? So the answer is 4

4 0
2 years ago
A bag contains 10 marbles:
Len [333]
Total number of marble = 10
3green
2red
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Probability that the first marble is red = 2/10

Probability that the second is blue = 5/9(a reduction in the total number of marbles, because after the first marble was picked it wasn't replaced)

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Hope this helped...?

6 0
3 years ago
What would the correct answer be???
tiny-mole [99]

Answer:

8.27837797

I think this is correct im not completely sure.

8 0
3 years ago
PLEASEE HELPP ILL MARK U PLEASE
gizmo_the_mogwai [7]

Answer:

y = 2/5x - 3

P (0,5)

parallel lines have equal slopes

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y = mx + b

m = slope, b = y-intercept

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m = 2/5

y intercept = 5

so, the equation would be

D. y = 2/5x + 5

3 0
3 years ago
Solve the quadratic equation using the quadratic formula.<br><br><br><br> 6x²- 9x + 2 = 0
DENIUS [597]

Answer:

x = 9 + √ 33 /12 ,  9 − √ 33  12

or

x = 1.22871355 … ,  0.27128644 …

Step-by-step explanation:

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