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Over [174]
3 years ago
7

Num supermercado, 200g de queijo e 300g de presunto custam juntos R$ 9,00. Renan resolveu comprar 400g de queijo e 400g de presu

nto e pagou R$ 14,00. Qual o preço, em reais, do quilograma do presunto?
(A) 1,50 (B) 2,00 (C) 14,00 (D) 15,00 (E) 20,00
Mathematics
1 answer:
nikklg [1K]3 years ago
7 0
The answer to this question is d
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Find all solutions of the equation in the interval (0,2π) <br> cot theta +root 3 = 0
Alisiya [41]

Answer:

θ = 5π/6 rad and 11π/6 rad

Step-by-step explanation:

Given the expression cotθ+√3=0

Subtract √3 from both sides

cotθ+√3-√3=0-√3

cotθ = -√3

Since cotθ = 1/tanθ

1/tanθ = -√3

Reciprocate both sides:

tanθ = -1/√3

θ = tan^-1(-1/√3)

θ = -30°

Since the angle is negative, and tanθ is negative in the second and fourth quadrant.

In the second quadrant;

θ = 180-30

θ = 150°

Since 180° = πrad

150° = 150π/180

150° = 5π/6 rad

In the fourth quadrant;

θ = 360-30

θ = 330°

Since 180° = πrad

330° = 330π/180

330° = 11π/6 rad

Hence the solutions are 5π/6 rad and 11π/6 rad.

7 0
3 years ago
PLEASE HELP ILL GIVE U BRAINLEST PLUS 50 POINTS IF U GET IT RIGHT
nikklg [1K]

Answer:

-10x^{2}-9x-6

Step-by-step explanation:

Combining like terms:

-7x^{2}-3x^{2}-10x+x-6

-10x^{2}-9x-6

8 0
3 years ago
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Find the area of the shape shown below.
NeX [460]

Answer:

16

Step-by-step explanation:

4x2=8

8x2=16

8 0
3 years ago
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Describe the graph of the function.<br> y =Square root of<br> x-1 + 4
Ulleksa [173]

Answer: Square root of x+3

Step-by-step explanation:

Insert the denominator to 3

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3 years ago
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Please help needed asap this is due in minutes.
goldenfox [79]
I’m pretty sure the second questions answer is y=3x+2
3 0
3 years ago
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