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Xelga [282]
3 years ago
8

The total cost of a pizza and 3 drinks is $19. The price of the pizza is $10 and each drink is the same price, d.

Mathematics
2 answers:
Neporo4naja [7]3 years ago
8 0

Answer:

each of the drinks are $3

Step-by-step explanation:

topjm [15]3 years ago
6 0

Answer: 10 d d d / 19

D = 3

Step-by-step explanation:

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Dominik [7]

Answer:

(3,-4) and (-3,4)

Step-by-step explanation:

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From the second equation we get

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Applying in the second equation

x^2+\left(-\frac{4}{3}x\right)^2=25\\\Rightarrow x^2+\frac{16}{9}x^2=25\\\Rightarrow \frac{9x^2+16x^2}{9}=25\\\Rightarrow 25x^2=225\\\Rightarrow x^2=\frac{225}{25}\\\Rightarrow x^2=9\\\Rightarrow x=\pm 3

When x = 3

y=-\frac{4}{3}x\\\Rightarrow y=-\frac{4}{3}\times 3\\\Rightarrow y=-4

When x = -3

y=-\frac{4}{3}x\\\Rightarrow y=-\frac{4}{3}\times -3\\\Rightarrow y=4

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Step-by-step explanation:

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