Examine the diagram to answer the question.
A circle with its center at (negative 0, 0) and passing through point (negative 3, negative 4).

What is the equation of the circle?
x2+y2=5

x2+y2=5–√

x2+y2=25

x2+y2=10

x^2 + y^2 = 25 (third one)

Step-by-step explanation:

formula is x^2 + y^2 = r^2 (r = the radius)

the radius is 5 so r^2 is 25.

c

Step-by-step explanation:

radius is 5

so eqn is (x-0)^2 + (y-0)^2 = r^2

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: