How is it 4 cause this math book gave me the first answer and its 5

Each of forty-one pet owners was asked, "Does your pet eat more dry food or wet food?" Here are the results. Among the cat owner

Amiraneli [1.4K]

Answer: No, pet does not eat more dry food than wet food.

Step-by-step explanation:

Since we have given that

In case of cat owner,

Number who chose Dry food = 6

Number who chose Wet food = 8

In case of dog owners,

Number who chose Dry food = 14

Number who wet food = 13

So,Total number who chose Dry food = $6+14=20$

Total number who chose Wet food = $8+13=21$

So, the answer for this question ""Does your pet eat more dry food or wet food?" is No.

Hence, No, pet does not eat more dry food than wet food.

4 0

3 years ago

Write an expression for "h less than 13"

Kamila [148]

Answer:

13-h is h less than 13. this is how you answer this.

8 0

3 years ago

The equation of a circle is x^2+y^2-2x +6y-6=0. Find the center and radius of the circle by completing the square.you must inclu

zavuch27 [327]

Answer:

The center of the circle is at;

$(1,-3)$

The radius of the circle is;

$r=4$

Explanation:

Given the equation of circle;

$x^2+y^2-2x+6y-6=0$

we want to re-write it in the form;

$(x-h)^2+(y-k)^2=r^2$

where;

$\begin{gathered} (h,k)\text{ is the center of the circle} \\ r\text{ is the radius} \end{gathered}$

Applying Completing the square method;

$\begin{gathered} x^2+y^2-2x+6y-6=0 \\ x^2-2x+1+y^2+6y+9=6+1+9 \\ (x-1)^2+(y+3)^2=16 \\ (x-1)^2+(y+3)^2=4^2 \end{gathered}$

comparing the derived equation to the general form we have;

$\begin{gathered} h=1 \\ k=-3 \\ r=4 \end{gathered}$

Therefore;

The center of the circle is at;

$(1,-3)$

The radius of the circle is;

$r=4$

6 0

1 year ago

There are 5 pens in a container on your desk. Among them, 3 will write well but 2 have defective ink cartridges. You will select

Norma-Jean [14]

Answer:

Kindly check explanation

Step-by-step explanation:

Total Number of pens = 5

Number of defective pens = 2

Number of non-defective pens = 3

A.) number of defective pens selected :

X : {0, 1, 2}

It is possible that no defective pen will be selected ; 1 defective will be chosen or both pens are defective.

2.)

Defective as Success (since selecting a defective pen is the point of interest.

3.)

Since selection is done without replacement

Probability of success per selection is different for each selection ;

Number of defective = 2

Number of observations = 5

P(success on first selection) = 2/5

P(success on second selection) = 1/4

Hence, X is not well approximated by a binomial random variable.

4.) if selection is done with replacement ; then then the probability of success per selection will be the Same for each selection made. Hence, X will be well approximated by a binomial Random variable.

5.) If sampling is done without replacement, then the the hypergeometric function will be a more effective approximation.

7 0

3 years ago

Three angels are labeled below with arcs. The smallest angel is 3/8 as large as the 160 degree angel. Find the value of angel a

gladu [14]

$the\ smaller\ angle= \frac{3}{8} \cdot 160^0=\frac{3}{8} \cdot \frac{160^0}{1} = \frac{3\cdot20^0}{1} =60^0\\ \\a=360^0-(160^0+60^0)=360^0-220^0=140^0$

6 0

3 years ago