1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
wolverine [178]
3 years ago
8

After a certain number of moves in a chess game, the ratio of black pieces to white pieces is 4 to 3. If there are 12 black piec

es on the board, which proportion can be used to find the number of white pieces?
Mathematics
2 answers:
harina [27]3 years ago
5 0
What times 4 equals 12? 3! So if 3x4=12 then do 3x3 to find the white pieces;)
7nadin3 [17]3 years ago
4 0
Black to white
4 : 3
12 : ?
should be 9
You might be interested in
5. Four bottles of Powerade cost $3.88. Find
Ede4ka [16]

Answer: .97 cents

Step-by-step explanation:

$3.88 ÷ 4 bottles of Gatorade = .97 cents each

5 0
3 years ago
In the diagram below QRS=NMP what is length in inches of MP
Veronika [31]
Mp is congruent to rs
7 0
3 years ago
Select the statements that are true based on the following given information. D = {x | x is a whole number} E = {x | x is a perf
likoan [24]
<h3>2 Answers: Choice C and Choice D</h3>

==========================================================

Explanation:

Let's write the roster notation of each set

D = {0, 1, 2, 3, ...} the dots indicate the pattern goes on forever

E = {0, 1, 4, 9, 16, 25} = list of perfect squares smaller than 36

F = {20, 22, 24, 26, 28, 30} = even numbers between 20 and 30

----------------

If we intersect sets D and E, we're looking for what numbers are in both sets at the same time. Therefore, D ∩ E = {0, 1, 4, 9, 16, 25} which is the exact same as set E. This is because all of set E is inside of set D. We say that set E is a subset of set D. So, D ∩ E = E.

Choice A is very close to being true. The problem is that 25 is missing from the set {1,4,9,16}. So this is why choice A is false.

----------------

Now let's intersect sets D and F. The numbers they have in common are {20, 22, 24, 26, 28, 30} which is exactly what set F is. So set F is a subset of set D. We can write D ∩ F = F in much the same way we can say D ∩ E = E.

D ∩ F = {12,14,16,18} is not true. A number like 12 is not between 20 and 30, so it cannot be in set F.

Choice B is false so we cross it off the list.

----------------

Choice C is true and here's why

D ∪ (E ∩ F) is the same as saying D ∪ G where G is the set of intersecting E and F together. In other words, G = E ∩ F

We don't really need to even worry about sets E, F or G. All that matters here is set D.

When we write D ∪ (E ∩ F) or D ∪ G, we're saying "a number is in set D, or it is in set G". If it is in D, then it's a whole number. Otherwise, it's in a subset of whole numbers.

Overall, D ∪ G and D ∪ (E ∩ F) form the entire set of whole numbers.

------------------

Choice D is true.

E and F have nothing in common

E = {0, 1, 4, 9, 16, 25}

F = {20, 22, 24, 26, 28, 30}

So intersecting them leads to the empty set. This is the set with nothing inside it, not even 0.

------------------

Choice F is false

These two sets below

E = {0, 1, 4, 9, 16, 25}

F = {20, 22, 24, 26, 28, 30}

union together to get

H = {0,1,4,9,16,20,22,24,25,26,28,30}

just toss all of the numbers together into one big set

Notice how each of these numbers are whole numbers, so they are part of set D. This means set H is also a subset of set D.

When we intersect sets D and H, we end up with set H. We do not simply end up with the set with 25 only inside it.

6 0
3 years ago
at a local restaurant the health inspector visits every 7 Days and the fire inspector visits every 12 days make a table for the
seraphim [82]

Day      Inspector

7           H

12          F

14          H

21          H

24         F

28         H

35          H

36          F

42          H

48           F

49          H

56          H

60          F

63          H

70          H

72          F

77           H

84           H, F

6 0
3 years ago
Ajay is researching how the population of his hometown has changed over time. Specifically, he learns his hometown had a populat
777dan777 [17]

Answer:

Could you Write the question more clearly?

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • BRAINLIESTTT ASAP!!! PLEASE HELP ME :)
    13·2 answers
  • The figure shown is created by joining two rectangles.
    15·2 answers
  • Find slope of (-3,3)(2,1)
    15·2 answers
  • Which side lengths form a right triangle?
    15·1 answer
  • What is the distance between the following points?
    15·1 answer
  • Which quadrant contains the point named by (4, -8) sorry i’m rly bad at this!!, 20 pts!
    5·2 answers
  • (Will mark brainliest!!!) 20 PTS !!
    12·1 answer
  • Translate 7 units to the right and 4 units up.<br> Then, rotate 180° about the origin.
    9·1 answer
  • HELP ME SOLVE THis Plz Solve last one plz
    15·2 answers
  • Using a tree diagram, how many outcomes are there for an outfit made with 1 shirt option 1 pants option and 2 shoe options?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!