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Katena32 [7]
2 years ago
11

Please answer with everything needed i appreciate everyones help

Mathematics
2 answers:
yawa3891 [41]2 years ago
4 0
Recheck the answer with your teacher.

nika2105 [10]2 years ago
3 0

Step-by-step explanation:

d = price of 1 drink

s = price of 1 sandwich

3d + 5s = 25.05

4d + 2s = 13.8

we can do this by combining both equations so that they is only one variable left.

e.g. multiply equation 1 by 4 and equation 2 by 3, and then subtract equation 2 from equation 1 :

12d + 20s = 100.2

- 12d + 6s = 41.4

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

0 14s = 58.8

s = 58.8/14 = $4.20

3d + 5s = 25.05

3d + 5×4.2 = 25.05

3d + 21 = 25.05

3d = 4.05

d = 4.05/3 = $1.35

so, each drink costs $1.35.

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Aleks04 [339]
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x^2 = 64 + 25
x^2 = 89
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7 0
3 years ago
I will give brainliest. I need help ASAP.
Tamiku [17]

Answer:

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4 0
3 years ago
Oliver has 3 times as many rocks in his collection as Katie. Then Oliver collected 75 more rocks and Katie collected 105 more ro
Evgesh-ka [11]

Answer:

The answer to your question is Katie had 15 rocks and Oliver 45 rocks.

Step-by-step explanation:

Conditions

Katie has x amount of rocks

Oliver has 3x amount of rocks

The final amount of rocks

                                    Oliver = 3x + 75

                                     Katie = x + 105

Now, they have the same amount of rocks, then we can equal both equations

                                   3x + 75 = x + 105

Solve for x

                                     3x - x = 105 - 75

                                           2x = 30

                                             x = 30/2

                                             x = 15

Conclusions

At first Katie had 15 rocks and Oliver had 3(15) = 45 rocks

5 0
3 years ago
Read 2 more answers
Find the sum of nth term of the series 1+3/2+5/2^2+7/2^3+.......
ioda

Answer:

an = (1 + 2·(n - 1))/2^(n - 1) = 2^(1 - n)·(2·n - 1)

sn = 6 - 2·0.5^n·(2·n + 3)


6 0
4 years ago
What is the equation of the quadratic graph with a focus of (3, 4) and a directrix of y = 8? (1 point)
Marta_Voda [28]
This question was already answered this is what the other person got.

8 0
3 years ago
Read 2 more answers
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