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Margaret [11]
2 years ago
8

Deanna and Alise are shopping. Deanna buys a sweater for $25 and 3 tubes of lip gloss. Alise buys a hat for $13 and five tubes o

f lip gloss. If both girls spend the same amount of money, what equation can you use to find how much each tube of lip gloss costs?
1
Mathematics
1 answer:
White raven [17]2 years ago
4 0

Answer:

25 minus 13=12

5 minus 3 =2

12 divided by 2= 6

each tube cost $6 hope this helps :)

Step-by-step explanation:

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Use the discriminant to determine the number and type of solutions the equation has.
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Two teachers purchase supplies for their classrooms.
inna [77]

Answer:

Cost of One Journal =  $3.99

Cost of One pen =  $0.59

Step-by-step explanation:

Let

Cost of One Journal = x

Cost of One pen = y

We can make equation from given statements.

Mr. Bowden purchases 18 journals and 40 pencils for $95.42.

18x+40y=95.42

Ms. Jacinto purchases 11 journals and 16 pencils for $53.33.

11x+16y=53.33

Now solving these equations to find the value of x

18x+40y=95.42--eq(1)\\11x+16y=53.33--eq(2)

Multiply eq(1) with 2 and eq(2) with 5

36x+80y=190.84\\55x+80y=266.65\\-\:\:\:\:-\:\:\:\;\:\:\:\:\:\:\:-\\---------\\-19x=-75.81\\x=\frac{-75.81}{-19}\\x=3.99\\

We get the value of x is: x=3.99

Now, putting value of x in equation 1 to find value of y.

18x+40y=95.42\\18(3.99)+40y=95.42\\71.82+40y=95.42\\40y=95.42-71.82\\40y=23.6\\y=\frac{23.6}{40}\\y= 0.59

So, we get the value of y: y = 0.59

Now, finding the costs:

Cost of One Journal = x = $3.99

Cost of One pen = y = $0.59

7 0
3 years ago
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Zolol [24]

Answer:

the \: slope \: is \:  \boxed{0}

Step-by-step explanation:

the \: slope \:  : m = \frac{  - 2 - ( - 2)}{3 - 13}  = -   \frac{0}{10}

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