In a class of 25 students, 15 of them have a cat, 16 of them have a dog and 3 of them have neither. Find the probability that a student chosen at random has a cat and a dog.​

Answers

Answer 1

Answer: 9/25

Step-by-step explanation:


Related Questions

PLEASE HELP! DUE BY MIDNIGHT!

Answers

Answer:

it's over already? or what?

Choose the equation that represents a line that passes through points (-1, 2) and (3, 1).
0 4x - y = -6
O x + 4y = 7
Ox - 4y = -9
O 4x + y = 2

Answers

Answer:

The answer is x + 4y = 7

Equation of a line is y = mx + c

Where m is the slope

c is the y intercept

Slope of the line between the points

(-1, 2) and (3, 1) is

Slope = 1-2/ 3+1 = - 1/4

Equation of the line using point

(-1, 2) is

y - 2 = -1/4(x + 1)

4y - 8 = - x - 1

x + 4y = 7

Hope this helps you

Each person in a community was asked, "What is your favorite type of pet?" The pie chart below summarizes their responses.
(a) Which category was chosen by approximately one-third of
the community?
Bird
C
Fish
Bird
(b) Approximately what percentage of the community chose Cat
or Dog?
Write your answer as a multiple of 10% - that is, 10%, 20%,
30%, ...
None
Other
Dog
(c) If 15% of the community chose Fish, approximately what
percentage chose Other?
Cat
2%
5%
33%
45%
5
?

Answers

Answer:

(a) Bird

(b) 40%

(c) 7%

Step-by-step explanation:

The pie chart is attached below.

Approximate the portion of each type of pet as follows:

Fish ≈ 15%

Bird ≈ 33%

Dog ≈ 17%

Cat ≈ 23%

Other ≈ 7%

None ≈ 5%

(a)

The pet category "Bird" was selected by approximately one-third of

the community.

(b)

The proportion of the community that chose Cat was, 23%.

The proportion of the community that chose Dog was, 17%.

So, the proportion of the community that chose Cat or Dog was:

Cat% + Dog% = 23% + 17%

                       = 40%

(c)

The proportion of the community that chose "Other" was approximately 7%.

Solve for x
X-5= -9 please help

Answers

Answer:

A. x = -4

Step-by-step explanation:

We are given the equation:

x - 5 = -9

In order to solve for x, we must "undo" the -5 by adding 5 to both sides:

x - 5 + 5 = -9 + 5

x = -4

The answer is thus A.

~ an aesthetics lover

x-5= -9

we need to put everything in the right part to easily calculate it:

x=5 -9 or you can write (-9+5)

then, we have that x= -4

5.2 is 23.7 % Of what number? (Round to the nearest hundredth.)

Answers

Answer:

21.94

Step-by-step explanation:

Convert the percentage to a decimal.

23.7% = 0.237

Divide the number the decimal.

5.2/0.237 = 21.94

The answer is 21.94.

Can you find the missing segment to the triangle in the image

Answers

x/4 = 7/2
2x = 4•7
2x = 28
28/2 = 14
x = 14


(Will mark brainliest if corret.)

Margaret is saving money for her summer vacation. She calculates that her starting amount is 0.4% of the total amount she wants to save. What is 0.4% written as a decimal?

Answers

Answer:

0.4% = 0.40 or 0.4

What is the formula for finding the area of a regular polygon with perimeter P and apothem length a? A. A = 1/2(Pa) B. a = PA C. A = Pa D. a = 1/2(PA)

Answers

Answer:

The answer is A.)  A=1/2(Pa)

Step-by-step explanation:

The area of a regular polygon with perimeter 'P' and apothem length 'a' is [tex]\frac{1}{2}Pa[/tex]    .

What is a regular polygon?

A polygon is a two-dimensional geometrical figure that has 'n' number of equal sides.

Given, the perimeter of the regular polygon is 'P'.

Apothem length of the polygon is 'a'.

Therefore, the area of a regular polygon is

[tex]= \frac{1}{2}Pa[/tex]

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Which simplified fraction is equivalent of 5.6 3/15 14/25 5/6 14/250

Answers

Answer:

4/25

Step-by-step explanation:

it would be 14/25 which equals 0.56 which is also equivalent to 5.6 and it’s just in a different form

What point is a solution to the inequality shown in this graph

Answers

Answer: A

Step-by-step explanation:

The solution to the graph of inequality given above is the shaded portion or the shaded part of the graph.

Since the point ( -3, -3) and ( 3, -1 ) are on the point line, and the line is a broken line, the inequality means greater than. That means that solution must be greater than those point. They are therefore not part of the solution.

Point ( 5, -5), where x = 5 and y = -5, according to the graph, the shaded portion does not cover y at -5.

Option C is therefore the correct answer which is within the shaded portion. (1, 5)

Three congruent isosceles triangles $DAO$, $AOB$ and $OBC$ have $AD=AO=OB=BC=10$ and $AB=DO=OC=12$. These triangles are arranged to form trapezoid $ABCD$, as shown. Point $P$ is on side $AB$ so that $OP$ is perpendicular to $AB$.


Point $X$ is the midpoint of $AD$ and point $Y$ is the midpoint of $BC$. When $X$ and $Y$ are joined, the trapezoid is divided into two smaller trapezoids. The ratio of the area of trapezoid $ABYX$ to the area of trapezoid $XYCD$ in simplified form is $p:q$. Find $p+q$.

Answers

Answer:

p+q = 12

Step-by-step explanation:

Let's draw the diagram obtained from the given information. Find attached the diagram.

When X and Y divides the line AD and line BY into half respectively, the diagram splits into two trapezoid.

See attachment for diagram.

Ratio of area ABYX to XYCD = p:q

p+q = ?

Area of trapezoid = ½(base 1 + base 2)height

For trapezoid ABYX:

Base 1 = AB = 12, Base 2 = XY

Using Pythagoras theorem to find height of ∆AOB

AO² = AP² + PO²

PO² = (10²-6²) = (100-36)

PO = √64 = 8

height of trapezoid ABYX =h = ½ PO

= 8÷2 = 4

base of triangles in trapezoid ABYX:

base² =  5² -4² = (25-16)

base = √9 = 3

XY = 12+3+3 = 18

Area of trapezoid ABYX = ½(AB + XY)height

= ½(12+18)×4

= ½(120) = 60

Area of trapezoid XYDC = ½(XY + DC)height

Height of both trapezoid = ½ PO = 4

base of triangles in trapezoid XYCD = 3

DC = 3+18+3 = 24

= ½(18+24)×4

= ½(168) = 84

Ratio of both areas

p:q = 60: 84

p:q = 5:7

p+q = 5+7

p+q = 12

Figure JUMP is a parallelogram. Which of these is congruent to UM?
A. JP
B. UJ
C. MP
D. UP​

Answers

it would be JP which is A
it’s option A. So it’s JP

Can anyone help me do this

Answers

Answer:

260% of 420=1092

166 2/3%of 60= 100

166 2/3% of 60 is 100

Suppose you roll a number cube. What is the theoretical probability of rolling a 5?

Answers

Answer:

1/6

Step-by-step explanation:

There are 6 possible outcomes when you roll a die

1,2,3,4,5,6

P(5) = number of outcomes with a 5/ total outcomes

        =1/6

How many units
above the x-axis
is the point
located at (9, 6)?
pls help

Answers

Answer:

6 units above the x-axis

Step-by-step explanation:

The pair (9,6) are a set of coordinates that indicate how far away from the origin (0,0) the point is.

The coordinates are written (x,y) where 'x' is how far to the left or right of the y-axis (vertical) the point is. The 'y' is how far above or below the x-axis (horizontal) the point is.

So in this case, the set of (9,6) means that the point is located at 9 units to the right of the origin and the y-axis and 6 units above the x-axis

Answer:

6 points

Step-by-step explanation:

the y coordinate is 6, so therefore it is 6 higher

Write an equation of a ine in slope-intercept form that passes through a point (4,-6) and has a slope of -3.

Answers

Answer:

y= -3x +6

Step-by-step explanation:

slope-intercept form:

y=mx +c, where m is the slope and c is the y-intercept.

Given that the slope is -3, m= -3.

Susbt. m= -3 into the equation:

y= -3x +c

Since the line passes the point (4, -6),

(4, -6) lies on the line and must therefore satisfy the equation. Thus, susbt. (4, -6) into the equation to find the value of c.

y= -3x +c

when x=4, y= -6,

-6= -3(4) +c

-6= -12 +c

c= 12 -6

c= 6

Hence, the equation of the line is y= -3x +6.

expression
equation
formula
identity
inequality
term
factor
multiple

Choose only two words from the box above to make this statement correct.
8y is a _____in the_____7x + 8y​

Answers

Answer:

Term

Expression

Step-by-step explanation:

8y is a term in the expression

7x + 8y

There are two terms in the expression 7x + 8y

First is 7x

Second is 8y

7 and 8 are coefficient of x and y respectively

7x+8y is an expression because there is no equality sign(=), it doesn't equate to any value.

Unlike an equation that has the Equal to sign(=)

There are three basic types of expression:

1. Arithmetic expression

2. Character expression

3. Logical or relational expression

A trader claims that the proportion of stocks that offer dividends is different from 0.14. If the trader wants to conduct a hypothesis test, should they use a left-, right-, or two-tailed hypothesis test to analyze whether the proportion of stocks that offer dividends is different from 0.14? Select the correct answer below: Left-tailed test Right-tailed test Two-tailed test

Answers

Answer:

The correct option is;

Two-tailed test

Step-by-step explanation:

From the interpretation of the question statement, the trader wants to conduct a hypothesis test on the trader's claim that the proportion of stocks that offer dividends is different from 0.14

Given that the difference is hypothesized, then the null hypothesis, H₀ and the alternative hypothesis, H₁ should be written as follows;

H₀: Null hypothesis (no difference, or no change)

H₁: μ ≠ μ₀ which is hypothesizing  difference which is known as a two-tailed test

The confidence level is then selected and the test statistic is calculated

One line passes through the points (−3,−1) and (1,−9). Another line passes through points (1,4) and (5,6). Are the lines parallel, perpendicular, or neither?

Answers

Answer:

the lines are perpendicular

Step-by-step explanation:

the first step to this question will be to find the slope intercept form of each of these lines. to do this we will first:

find the slope-

(-3,-1) and (1,-9)

y2-y1 / x2- x1

-9 - (-1)  / 1 - (-3)  (negative - negative = positive)

-8 / 4

therefore the slope is:

-2

we know that slope intercept form is y=mx+b

so.. y= -2x +______

I left the last part blank, because we only have the first half of the equation, now we will substitute the value of x and y into the equation from one of the coordinate points given above.

(-9) = -2(1) + _____

now we can simplify:

-9 = -2

this equation (-9 = -2) is not true, therefore we need to determine what we have to do to -2 to make it equal to -9.

-9 = -2 - 7 is true

therefore the answer is :

y= -2x-7

therefore the slope intercept form is y= -2x - 7

now that you know how to find the slope intercept form, you can find the other slope intercept form, and i'll provide the answer:

the slope intercept form you should find is

y= [tex]\frac{1}{2}[/tex]x + [tex]\frac{7}{2}[/tex]

now when we plot both of these lines we can see that:

the lines are perpendicular, meaning the lines pass through each other.

Answer:

the two lines are perpendicular to one another

Step-by-step explanation:

Find the slopes of the two lines and then compare them.

If the slopes are the same, the lines are parallel.

If the slopes are negative reciprocals, the lines are perpendicular.

If neither of these conditions hold, then the lines are neither parallel nor perpendicular.

(−3,−1) and (1,−9):  As we go from the first point to the second, x (the "run") increases by 4 and y (the "rise") decreases by 8.  Thus, the slope of the line through (−3,−1) and (1,−9) is m = rise / run = -8/4, or m = -2.

(1,4) and (5,6):  As we go from the first to the second, x increeases by 4 and y increases by 2.  Thus, the slope of the line through (1,4) and (5,6) is

m = rise / run = 2/4 = 1/2.

Because 1/2 is the negative reciprocal of -2, we know that the two lines are perpendicular to one another.

The sum of all the interior angles in a triangle is blank degrees.

Answers

Answer:

180 degress

Step-by-step explanation:

triangles always add up to 180

Which expressions are equivalent to -90 - 60w? Choose three. *Hint: On each answer choice below, use the distributive property to decide which ones match -90-60w. Also remember that -60w-90 is equivalent to -90-60w a) -30(3 + 2w) b) (-9 − 6w) x 10 c) -3(30 - 20w) d) (6 + 4w) × 15 e) −20(4.5 + 3w)

Answers

Answer:

a), b), e)

Step-by-step explanation:

a) -30(3 + 2w) = -90 - 60w

b) (-9 − 6w) x 10 = -90 - 60w

c) -3(30 - 20w) = -90 + 60w

d) (6 + 4w) × 15 = 90 + 60w

e) −20(4.5 + 3w) = -90 - 60w

PLEASE HURRYYYYYYYYYY!!!!!!!!


In OD, AB = CB and marc CE - 52. Find mZBCE. (See picture)

Answers

Answer:

A. 109

Step-by-step explanation:

We know that since AB = CB, then ΔABC is isosceles.

Since AC, one of the sides of ΔABC, is on the diameter of circle D, by definition, we know that ΔABC is also a right triangle. Thus, if ΔABC is an isosceles right triangle, then ∠BAC = ∠BCA = 45°.

Draw a line connecting D to B so that we now have isosceles triangle BDC. Since arc BC is 52°, by definition of central angles, ∠BDC is also equal to 52°. Then, ∠DBC = ∠DCB = (180 - 52)/2 = 64°.

∠BCE = ∠DCB + ∠BCA

∠BCE = 64 + 45 = 109°

The answer is thus A.

~ an aesthetics lover

Find the missing length indicated.

Answers

Answer:

It will be 35 inches sq

Step-by-step explanation:

The values of x is  120.

What is Pythagoras theorem?

A theorem stating that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the lengths of the other sides.

in ABC

AC²= AB² + BC²

289²= AB² + BC²........................(1)

In ABD                                                                        

AB²= AD² + BD²

AB²= 225² + x²

In BCD

BC²= CD² + BD²

BC²= 64² + x²

Put the values in (1)

289²=  225² + x² + 64² + x²

2x² = 28800

x= 120

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What is the degree of the polynomial given below?
F(x) - 2x3 - x2 +5x - 3

Answers

Answer:

3

Step-by-step explanation:

3 is the degree of polynomial [tex]f(x) = -2x^3-x^2+5x-3[/tex]

=> Degree of the polynomial is the highest power/exponent contained by the variable in the expression.

Answer:

The degree of the polynomial would be 3, since 3 is the largest exponent

Step-by-step explanation:

Mathematics, Help, not sure about my answer on this one

Answers

Answer:

F. 2 1/9

Step-by-step explanation:

Step 1: Substitute q

[tex]r = 3(\frac{1}{3^n} )+2[/tex]

When you plug in n = 1, 2, 3:

n(1) = 3

n(2) = 2.11111

n(3) = 2.3333

So our answer is F.

Question 3(Multiple Choice Worth 1 points)

(06.02 LC)


A scatter plot is shown below:


Graph shows numbers from 0 to 10 at increments of 1 on the x axis and number s from 0 to 10 at increments of 1 on the y axis. Scatter plot shows ordered pairs 1, 9.1 and 2, 8 and 3, 7.6 and 4, 6.1 and 5, 5 and 6, 4 and 7,4 and 8, 3 and 9, 2.5 and 10, 1.


Which two ordered pairs can be joined to draw most accurately the line of best fit for this scatter plot?


(4.5, 10) and (10, 6.5)

(0, 9.8) and (10, 1.2)

(0, 4) and (5, 0)

(0, 6) and (7, 0)

Answers

Answer:

(0,9.8) and (10,1.2)

Step-by-step explanation:

it makes the best line

The two ordered pairs can be joined to draw most accurately the line of best fit for this scatter plot are (0, 9.8) and (10, 1.2).

Option B is the correct answer.

What is a scatterplot?

A scatterplot is a type of graphical display that is used to represent the relationship between two continuous variables.

In a scatterplot, each point represents the values of the two variables, with one variable being plotted along the x-axis and the other variable being plotted along the y-axis.

The position of each point on the graph represents the values of both variables for that particular observation.

We have,

To determine which two ordered pairs can be joined to draw the most accurate line of best fit for the scatter plot, we need to look for pairs of points that are representative of the overall trend in the data.

We can plot the given points and visually inspect the scatter plot to find the line of best fit.

 10|         o

   |             o

 9 |          o

   |          o

 8 |       o

   |       o

 7 |     o

   |    o

 6 |  o

   |o

 5 |o

   |            o

 4 |       o        o

   |                o

 3 |         o

   |             o

 2 |           o

   |                o

 1 |                o

   |____________________________

     0  1  2  3  4  5  6  7  8  9 10

From the scatter plot, we can see that there is a general downward trend from left to right and that the points are somewhat scattered around this trend.

One possible way to draw the line of best fit is to connect the points (0, 9.8) and (10, 1.2).

This line represents the overall trend in the data and passes close to many of the given points.

Therefore,

The two ordered pairs can be joined to draw most accurately the line of best fit for this scatter plot are (0, 9.8) and (10, 1.2).

Learn more about scatterplots here:

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What is the maximum possible number of unique zeros for the
function

F(x)= ax 5 +bx+cx-1?

3

4

10

5

Answers

Answer:

5 zeros maximum

Step-by-step explanation:

Recall that a polynomial has as many roots (zeros) in the Complex number system, as its degree. So in the given case, where the leading term of the polynomial carries order 5, the maximum  number of zeros for the given function cannot be larger than 5.

1. Label and display your new polynomial identity 2. Prove that it is true through an algebraic proof, identifying each step 3. Demonstrate that your polynomial identity works on numerical relationships (x + y)* (x^2 + 2xy + y^2) the new polynomial

Answers

Answer:

(ax+b) (x+a)

Step-by-step explanation:

Which points lie on more than one plane?
O A ands
X and Y
O Mands
M and R

Answers

Answer:

x and y

Step-by-step explanation:

x and y are on the intersection of the 2 planes, meaning they lie on more than 1 (two) planes.

If we're being technical, it's all of them, because an infinite amount of planes go through 2 points.

PLEASE HELP!!!
1) Points: A, B, C, and D are the vertices of a square in the coordinate plane. Give possible coordinates for A, B, C, and D.
2) How do you know your points form a square without plotting the points?
3) Describe a real-world square that your points could represent.

Answers

Answer:

(1,1)(2,1)(1,2)(2,2) They create a square because there is an equal distance between adjacent points. They could reperesent a 1x1 square.

Step-by-step explanation:

:)

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