The radius of a circle is 2 kilometers. What is the circles circumference. Use 3.14 for pie

Give two instances in which deductive reasoning does not work.

kotegsom [21]

Answer: Deductive reasoning does not work if the premises in which they are based are wrong or if the deduction is not based on any premises given.

Step-by-step explanation: Deductive reasoning works when we make logical assumptions or links between some given premises that are supposed to be true. One example could be assuming that all police officers work with guns, they work wearing a blue uniform and they use a black and white car. If a situation in which a person works in a blue uniform, using a black and white car and a gun is given, one can infer that this person is a police officer. But, if the premise that they work using guns is not always true, for example, you cannot say that this person is a police officer. This happens because the premise given is wrong. If one simply infers that the person in the example is a firefighter, without any logical assumptions, then it doesn't follow the deduction reasoning method.

3 0

3 years ago

For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation for the cost, C, after h hours of babysitt

ratelena [41]

The slope is represented by 5h and the y-intercept is 3. If she were to babysit for 5 hours, she would make $28. The equation is 5h + 3= C

4 0

3 years ago

Write an equation for an ellipse centered at the origin, which has foci at (\pm\sqrt{8},0)(± 8 ,0)(, plus minus, square root o

Alchen [17]

Answer:

The equation of ellipse centered at the origin

$\frac{x^2}{18} +\frac{y^2}{10} =1$

Step-by-step explanation:

given the foci of ellipse (±√8,0) and c0-vertices are (0,±√10)

The foci are (-C,0) and (C ,0)

Given data (±√8,0)

the focus has x-coordinates so the focus is lie on x- axis.

The major axis also lie on x-axis

The minor axis lies on y-axis so c0-vertices are (0,±√10)

given focus C = ae = √8

Given co-vertices ( minor axis) (0,±b) = (0,±√10)

b= √10

The relation between the focus and semi major axes and semi minor axes are $c^2=a^2-b^2$

$a^{2} = c^{2} +b^{2}$

$a^{2} = (\sqrt{8} )^{2} +(\sqrt{10} )^{2}$

$a^{2} =18$

$a=\sqrt{18}$

The equation of ellipse formula

$\frac{x^2}{a^2} +\frac{y^2}{b^2} =1$

we know that $a=\sqrt{18} and b=\sqrt{10}$

Final answer:-

The equation of ellipse centered at the origin

$\frac{x^2}{18} +\frac{y^2}{10} =1$

8 0

3 years ago

Read 2 more answers

If 45 cookies will serve 15 students, how many cookies are needed for 30 students

valina [46]

90 cookies will feed 30 people just double 45

8 0

4 years ago

Read 2 more answers

The domain of a graph is

Minchanka [31]

Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.

6 0

3 years ago