if the ratio of dogs to cats is 1 to 2 and there is a total of 21 animals how many are dogs

Answers

Answer 1

Answer:

Step-by-step explanation:

Let   cats = x  and dogs = y

and given conditions are ,

dog: cat= 1:2

y:x=1:2

y/x = 1/2

x=2y

also given that

total animals = 21

x+ y=21     putt x=2y we get

2y +y =21

3y = 21

y = 7  Dogs

putt y = 7 in above equation we get

x+7=21

x=14 Cats
Answer 2
There are 7 dogs and 14 cats

Every one dog there are two cats 1:2
Also could be written as (cats) 7:12 (dogs)

Related Questions

PLZ HELP-PICTURE ATTACHED
MATHMATICS

Answers

Answer:the frist on

Step-by-step explanation:

there 5 canby bars and there are 8 boxes  so you would do(5x8) divided by s and s= 1  

Answer:

its option A

Step-by-step explanation:

you need to multiply the amount of granola bars to boxes

then divide by the number of students

What is 9x10 wht is 9x10 what is 9x10 what is 9x10 mate

Answers

it’s 90 mate yeahhhhhhhh

Answer:

90

Step-by-step explanation:

9x10 is nine ten times or ten nine times

9+9+9+9+9+9+9+9+9+9=90

or

10+10+10+10+10+10+10+10+10=90

An easy trick for doing anything muliplied by 10 is to just add an extra 0 on the end of the first number!

Meghan ran nine twelfths of a mile and skipped eight twelfths of a mile around a track. How far around the track did Megan go in total?

Answers

seventeen/twelfths
you would just add the numerator(top number) and keep the denominator(bottom number) the same
also, 1 and 5/12
the first one was a improper fraction
17/12 because of math and history mixed with big brain 10000000000 in

Please help! Will give brainiest who ever answers first and correct.

Answers

Answer:

letter I'm pretty sure

if it's unknown, it could any number, when the unknown is replaced with a letter, you can solve the test of the equation to find the unknown

help ill give brainleist

Answers

Answer:

21.99114858

Step-by-step explanation:

multiply 7 by pi i think

its 7 x pi so like 7 x 3.14 which is 21.98

are these similar and please explain why or why not.

Answers

Answer: no they are not simular and the reason for this is because not only are one of the sides off but one of the x values on the first one is not equal.

Step-by-step explanation:

I hope this helps have a good day

Answer:

Yes, they are similar.

Step-by-step explanation:

The two triangles have at least one angle that is the same.

(I am most definitely NOT sure about this one btw)

If three bananas vost $0.99, how much would 5 bananas cost?

Answers

Answer:

$1.65

Step-by-step explanation:

First to find the unit rate, (how much one banana cost) you divide 0.99 / 3 which is equal to 0.33 then multiply 0.33 by 5 and you get 1.65 hope this helped!

Evaluate the expression for x = 5, y = 3, and z=14 .

5x−6y+20z/4yz

Answers

Answer:

4

Step-by-step explanation:

Answer: 1 17/24

If you want an explanation, let me know :)

Quadrilateral OPQR: O(1,-5), P(3,-4), Q(7,-3), R (5,-2). Translate this quadrilateral (x,y)----> (x-5,y +7) creating image O'P'Q'R', then rotate 0'P'Q'R' 180 degrees clockwise about the origin to image O"P"Q"R". What are the final coordinate of the quadrilateral

Answers

Answer:(x,y)⇒(x-5,y+7)

0'⇒(-4,2),

P'(-2,3)

Q'(2,4)

R'(0,5)

(x,y)⇒(-x,-y)

O'((1,-5)⇒O''(-1,5)

P'(-2,3)⇒P''(2,-3)

Q'(2,4)⇒Q''(-2,-4)

R'(0,5)⇒R''(0,-5)

Step-by-step explanation:

During an exploratory activity, a student measured the diameter and circumference of several circular objects. She recorded her data in the table below. What equation best represents this data?

y = 6.28x
y = 3.14x + 6.28
y = 3.14x
y = 6.28x + 3.14

Answers

Answer:

y=3.14x

Step-by-step explanation:

if you graph this on a calculator you can just visually see what line lines up with all the points. but you can also plug in one of the points into the equations to see if its true or not and if its true choose that equation. like use the first points (2, 6.28) and plug them into the equations and see which one is true.

The equation best represents the given data is y=3.14x. Therefore, option C is the correct answer.

Given that, a student measured the diameter and circumference of several circular objects.

What is slope of a line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The formula to find the slope of a line is slope = (y2-y1)/(x2-x1)

From the table we have (2.0, 6.28) and (5.3, 16.64)

Now, slope = (16.64-6.28)/(5.3-2.0)

= 10.36/3.3

= 3.14

Substitute m=3.14 and (x, y)=(2.0, 6.28) in y=mx+c, we get

6.28=3.14(2.0)+c

c=0

Substitute m=3.14 and c=0 in y=mx+c, we get

y=3.14x

The equation best represents the given data is y=3.14x. Therefore, option C is the correct answer.

To learn more about the slope of a line visit:

https://brainly.com/question/14511992.

#SPJ2

help me out pleaseeeeeee

Answers

Answer:

What is the question

Step-by-step explanation:

Well what is the question?

Addison made a scale drawing of a city. A neighborhood park is 18 inches wide in the drawing. The actual park is 72 yards wide. What scale did Addison use?

Answers

Answer:

Yeah its 0.25 as I think :)

A ball bearing has a diameter of 10 millimeters.

what is the volume of the ball bearing rounded to the nearest tenth of a cubic meter.
Use 3.14 as an approximation for π​

Answers

Answer:31.4

Step-by-step explanation:

31.4
Explanation: 3.14*10 = 31.4

Hope this helps! :)

What fraction does point A on the number line below represent?

Answers

The answer would be...

-3/8

Have a nice day/night! :)

Please help me. Look at the picture.

Answers

Answer:

40 by 2.5 ?

Step-by-step explanation:

Answer:

Step-by-step explanation:

To find the equation of the line in slope-intercept form we to find the y-intercept(b) and the slope(m)

For the y-intercept(b) we can see that the line crosses/intersects the y-axis at 40 so the value of b equals 40 which means our y-intercept is 40

now all that is remaining is the value of m which we can find through the formula:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

we take any two coordinates which lie on the line for example

(0 , 40) and (2 , 140) and plug it into our formula

[tex]m=\frac{y_2-y_1}{x_2-x_1} \\\\m=\frac{140-40}{2-0}\\\\m=\frac{100}{2} \\\\m=50[/tex]

so the slope of the line is 50 which is m , so the equation of the line in slope-intercept form would be:

[tex]y=mx+b\\y=50x+40[/tex]

Help please ill give brainliest

Answers

Answer:

I'm pretty sure triangle 6 is similar to triangle 1

Step-by-step explanation:

A car model box has 1/8 scale printed on the outside of the box .if the actual care is 178 inches long, what is the length of the model

Answers

22.25 inches 1/8 of 178 is 22.25

Which of the following describes the graph of 2x + 4y < 16?
dashed line shaded above
solid line shaded above
solid line shaded below
dashed line shaded below

Answers

Answer:

dashes line shaded below

Step-by-step explanation:

hope this helps

Help please ill give Brainliest

Answers

it’s E :) it’s up 20 characters

Jessica is returning home from a trip. The function d(t)=458-60t models the distance, in miles, that Jessica is from her house t hours after she began returning home. How far is Jessica from her home 5 minutes after she began returning home?

Answers

Write the equation in POINT-SLOPE FORM of the line that passes throught (5,9) and has a slope of -7.

I need help, Gonna give brainliest to right answer

Answers

Answer:

s = 7t

Step-by-step explanation:

Plz help I’m giving all my points! Whoever answer all of them gets brainliest

Answers

Answer:

19. 11

Step-by-step explanation:

thats the one I know!!! hope that helps

Will give brainliest
Danielle walked from her house to several locations in her town. The graph represents her distance from home after x hours
How far from home was Danielle after

What is the domain when the function is increasing?
What is the domain when the function is decreasing?
What is the domain when the function is constant?

Answers

the first slope going up is when the function increases. when the line goes in a straight line it’s constant. abs when the slope goes down it’s decreasing. so in the photo it first increases, stays constant, decreases, stays constant, decreases

Answer:

at 0 that is when it starts to increase until it hits the 2  on the y- axis. Then there is the constant speed that starts at 1 then ends on 2 on the x-axis. As soon as the constant speed stops it decreases to the number 3 then back at a constant speed to decrease again.

Step-by-step explanation:

I hope this helps :)

Alice, Ben, Carol, David, and Elsa, who are neighbors to each other, decided to celebrate the holidays together using the progressive dinner approach. They would eat one course of dinner at one's home and move to the next person's home.
The courses in their progressive dinner include Salad, Soup, Ham, Potato Latkes, and Dessert. For dessert, each one of them ate a different kind of dessert from the following choices: Ice Cream, Jelly Donuts, Chocolate Coins, Sweet Potato Pie, and Pudding.
*Soup was served in the home of the person who ate jelly donuts for dessert.
*Salad was served in Carol's home.
*Potato latkes were not served in Alice's home.
*Ham was served in the home of the person who ate sweet potato pie for dessert.
*Dessert was served in David's home.
*Ben chose jelly donuts for dessert.
*Elsa chose pudding for dessert.
*Salad was not served in the home of the person who ate ice cream.

Answers

Nice story, where is the question?

A contractor bought 10.8 ft squared of sheet metal. has used 2.1 ft squared so far and has ​$139.20 worth of sheet metal remaining. The equation 10.8x + 2.1x = 139.2 represents how much sheet metal is remaining and the cost of the remaining amount. How much does sheet metal cost per square​ foot?

Answers

Answer:

7.1

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

took one for the team :D

please helpppp i would appreciate it !!!!!

Answers

Answer
3. 18/7 or in mixed number form 2 4/7
4. 10/21
6. 9

A photographer is making an enlargement of a color portrait. If the original portrait is 11 inches by 14 inches and he wants to make the new width 14 inches, about how long should the enlarged length be?

Answers

The width of the original is 11 inches.

The ratio of the width is 14/11

Set up a ratio for the new length:

14/11 = 14/X

Cross multiply:

11x = 196

Divide both sides by 11:

x = 196/11

x = 17.8 inches. (Rounded to the nearest tenth)

Answer:

Original width: 11 inches.

ratio: 14/11

Step-by-step explanation:

Hope this helps!!

Please help. Will give Brainly!! 15 points!!!!

Answers

Answer:

Please make it a bit bigger.

Step-by-step explanation:

I can't see it

Answer:  2.3 × 0.4 = 0.92 .

2.3 × 1 = 2.3

0.92 + 2.3 = 3.22

Step-by-step explanation:

When decimal points are left out until the end, you can count the number of decimal places to the right of the decimals in the factors and then insert the decimal in the product, counting places right to left.

The factor 2.3 has one decimal place. The factor 0.4 has one decimal place.

Thats a total of 2.

92 becomes .92 when the decimal is inserted two places to the left.

230 becomes 2.30 when the decimal is inserted two places to the left.

Camilla drew a scale drawing of an office. She used the scale 2 inches = 3 feet. What is the scale factor of the drawing?

Answers

The first answer was close but first you do 3 x 2 = 6 x 3 than add 1/10 it would be 1/18

Could y'all help with this? :]

Answers

Answer:

answer is options A, B and E are the correct answer of this question.....

Answer:

I think E A B are the possible answers.

Step-by-step explanation:

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