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3 years ago

The radius of a circle is 2 units. What is the diameter of the circle?

Mathematics

2 answers:

Ann [662]3 years ago

8 0

Answer:

4units

Step-by-step explanation:

diameter is twice the radius

ruslelena [56]3 years ago

8 0

Step-by-step explanation:

Given

radius (r) = 2units 

Diameter (d) = 2r = 2*2 = 4 units 

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Find the standard form of the circle x2 + y2 – 6x + 10y + 24 = 0 by completing the square.

hichkok12 [17]

Answer:

$(x-3)^2+ (y+5)^2=10$

Step-by-step explanation:

Given the equation of the circle: $x^2 + y^2 - 6x + 10y + 24 = 0$

We wish to express it in a Standard form:

We begin by re-arranging:

$x^2 - 6x + y^2 + 10y = - 24$

Next, divide the coefficient of x by 2, square it and add it to both sides.

Do the same for y.

$x^2 - 6x +(-3)^2+ y^2 + 10y+5^2 = - 24+(-3)^2+5^2$

Next, we factorize

$(x-3)^2+ (y+5)^2 = - 24+9+25\\(x-3)^2+ (y+5)^2=10$

This is the standard form.

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3 years ago

Ryan wants to rent a boat and spend at most $39. The boat costs $6 per hour, and Ryan has a discount coupon for $3 off. What are

UkoKoshka [18]

Answer: t is less than or equal to 7.

Step-by-step explanation:

6t - 3 is less than or equal to 39.

Add 3 to both sides.

6t is less than or equal to 42.

Divide by 6.

t is less than or equal to 7.

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The quotient of a number and negative four is 16

aliina [53]

Answer:

n/-4=16 or n divided by negative four equals 16

Step-by-step explanation:

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Step-by-step explanation:I need a full question to answer

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