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gizmo_the_mogwai [7]
3 years ago
6

Help I’ll mark you brainly!!

Mathematics
2 answers:
Vinil7 [7]3 years ago
6 0
19 days

if she plans to spend $25 per day with a $475 budget, the equation would be 25d=475. d for the number of days

25d=475
25d/25=475/25
d=19
valina [46]3 years ago
4 0
It would be 19 days until she runs out of money because you have to divide 475 and 25.
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Semenov [28]

9514 1404 393

Answer:

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Step-by-step explanation:

The question asks for the total cost of a notebook and pen together. We don't need to find their individual costs in order to answer the question.

Sometimes we get bored solving systems of equations in the usual ways. For this question, let's try this.

The first equation has one more notebook than pens. The second equation has 4 more notebooks than pens. If we subtract 4 times the first equation from the second, we should have equal numbers of notebooks and pens.

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<em>Additional comment</em>

The first equation has 1 more notebook than 2 (n+p) combinations, telling us that a notebook costs $6.50 -2(2.50) = $1.50. Then the pen is $2.50 -1.50 = $1.00.

One could solve for the costs of a notebook (n) and a pen (p) individually, then add them together to answer the question. We judge that to be more work.

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