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ivann1987 [24]
3 years ago
7

It is given that y varies directly as x. if y = 5 when x = 4 determine the constant of variation.

Mathematics
1 answer:
myrzilka [38]3 years ago
3 0
D is the correct answer!!!

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If you transform x 2 + y 2 = 25 into 4x 2 + 4y 2 = 25, which option below describes the effect of this transformation on the rad
FromTheMoon [43]

<em><u>Answer</u></em>


c. It divides the radius by 2.



<em>Explanation</em>

The general equation of a circle is

(x-h)² + (y-k)² = r²

Where (h, k) makes the coordinates of the circle and r the radius.


x² + y² = 25 For this equation,


center (0, 0)

Radius = √25 = 5


4x² + 4y² = 25 First simplify this equation

4x² + 4y² = 25 ⇒ x² + y² = 25/4


center (0, 0)

Radius = √(25/4) = 5/2


The radius has been divided by 2


5 0
3 years ago
Read 2 more answers
Please answer this quickly !
nika2105 [10]

Answer:

The first option.

Because we're solving for the price of each gallon, x will represent the cost of each gallon. Since 8.4 is the total amount of gallons, multiply 8.4 and x to get $23.94. Solve for x by dividing 23.94 to get $2.85 per gallon. To check this, substitute 2.85 for x into the equation: 8.4 (2.85) = 23.94

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3 years ago
Find the midpoint of the line using the midpoint formula.<br> Midpoint of AB:______
dimaraw [331]

Answer: MP=(1,1)

Step-by-step explanation:

MP= (\frac{x_1+x_2}{2})(\frac{y_1+y_2}{2})

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MP= (\frac{2}{2})(\frac{2}{2}) 2/2=1

MP= (1,1)    

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3 years ago
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Anvisha [2.4K]
Absolute value= opposite. (positive turns into negative)(negative turns into positive)
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Ilya [14]

Answer:

I think is A tell me if I am wrong

Step-by-step explanation:

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