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iVinArrow [24]
3 years ago
14

What is the equation of circle whose centre is (0,0) and radius'r' ?​

Mathematics
1 answer:
adoni [48]3 years ago
4 0

Answer:

On the right is a circle with centre (0, 0), radius r and (x, y) any point on the circle. Distance between (0,0) and (x, y) equals the radius, r. If the centre is (0, 0), the equation of the circle will be of the form x2 + y2 = r2.

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Mom is 60 years old and daughter is half mom's age. How old was daughter when mom was 4 times her age?
rewona [7]

Answer:

  10 years old

Step-by-step explanation:

The difference in ages is 60 -30 = 30 years. When mom was 4 times daughter's age, the difference in their ages was 3 times the daughter's age.

The age difference was 30 years at that time, so the daughter was 10 years old.

4 0
3 years ago
Shortly after takeoff, an airplane is climbing 250 feet for every 1,000 feet it travels. Estimate the airplane’s climb angle whi
SCORPION-xisa [38]

Answer: The climb angle is 14°

Step-by-step explanation:

We can create a rectangle triangle, where the velocity of the plane is the hypotenuse, the horiontal component (1000 ft by unit of time) is a cathetus and the vertical component is (250ft by unit of time).

We want to find the angle that is adjacent to the horizontal component, so we can use the relationship.

Tan(angle) = opposite cathetus/adjacent cathetus

Tan(angle) = 250/1000 = 1/4

Angle = Atan(1/4) = 14°

7 0
3 years ago
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Karo-lina-s [1.5K]
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7 0
3 years ago
Which graph shows a set of ordered pairs that represents a function?
bonufazy [111]

There is a rule for functions:

One input(x-value) can only have one output(y-value).

If one input has more than one output, it is not a function.

(This doesn't apply to outputs, one output can have more than one input and still be a function)

This graph shows a set of ordered pairs that does NOT represent a function because there are two points on x = -3. The input -3 has more than one output of -4 and 4, so it is not a function.

4 0
3 years ago
When a warehouse opened, it had an inventory of 6,000 items. Every month, the inventory increases by 3,000 items.
anygoal [31]

Answer:

The first two graphs are the exact same but it is the first two.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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