A school board randomly samples 80 students to determine their opinion on requiring school uniforms for the next school year. The table shows the results of the survey.
If there are 3,000 students in the district, how many students do you expect to be undecided about school uniforms?
Answers
Answer: 900
Step-by-step explanation:
If 24 out of 80 students are undecided, that is 24/80, or 3/10 (0.3).
To find how many would be undecided out of 3,000 students, multiply 3/10 by 3,000/1, and you get 900, which is your answer
Answer:
900
Step-by-step explanation:
A school board randomly samples 80 students to determine their opinion on requiring school uniforms for the next school year. The table shows the results of the survey.
If there are 3,000 students in the district, how many students do you expect to be undecided about school uniforms?
we can solve with an equation
80 : 24 = 3000 : x
x = 24 * 3000 : 80
x = 900
Related Questions
The Perseverance Mars rover uses a special coring bit to drill out a rock cylinder 13 mm in diameter. As the rover drills, the rock core moves into one of 38 sample tubes. If the coring bit collects a rock cylinder 60 mm in length, what is the volume of the rock in the sample tube?
Answers
Answer:
235
Step-by-step explanation:
Compare the theoretical and experimental probabilities. Jayson draws a card from a deck, replaces it, and draws again. He records the number of times he draws a queen.
Number of Trials: 20, 25, 100
Number of Queens: 5, 3, 9
The theoretical probability is: ?%
Answers
ANSWER:divide 20/5, 25/3, 100/9 those answers are: 4, 8.3, 11.1. All we really need is 100/9=11.1 because it wants a percent so the answer is 11.1%
The statement that is false on Jose drawing cards from the deck is B. For a given number of selections, we can use Joseph's graph to find the number of diamonds that he has picked so far.
What is probability?Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.
here, we have,
given that,
Jose draws a card from a deck replaces it and draws again he records a number of times he draws an ace. He decides to record the total number of aces that he selects and calculates the proportion of aces that he has selected so far after each pick. He then constructs a graph to visualize his results.
as the graph can not be used:
Jose only recorded the number of aces he selected, not the number of diamonds. Therefore, we cannot use his graph to find the number of diamonds he picked.
However, if we were to use the graph to find the number of aces that Jose has picked so far, then we would be successful. The other statements are true as Jose recorded the cards he took and the cards were replaced after each pick.
Find out more on probability at
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The full question is:
Jose draws a card from a deck replaces it and draws again he records a number of times he draws an ace. He decides to record the total number of aces that he selects and calculates the proportion of aces that he has selected so far after each pick. He then constructs a graph to visualize his results. Which of the following statements is FALSE?
A. The theoretical probability for selecting an in each pick is 1 / 13.
B. For a given number of selections, we can use Jose's graph to find the number of diamonds that he has picked so far.
C. This is an example of the law of large numbers.
D. The relative frequency of selecting an ace changes with the increase in number of selections.
Eckhart School is selling candy to raise money for its sports programs. Last year the school raised $480 during a 12-day fundraiser. The school expects this year's daily sales to be in proportion to last year's daily sales. Based on the school's expectations, which of the following statements is correct?
A) In 3 days, the school will raise $120.
B) In 7 days, the school will raise $240.
C) In 13 days, the school will raise $500.
D) In 22 days, the school will raise $960.
Answers
Well, according to the info here, they would have made 40 dollars a day during the 12-day time frame.
120/3= 40. ANSWER
240/7=34.28
500/13=38.46
960/22=43.63
this is your answer.
A chemist is weakening an 80% solution by adding a 40% solution. How much of each should he use to get 100 milliliters of a 50% solution? the chemist’s problem is modeled by the system: {0.80x+0.40y=0.50⋅100 (x+y=100 where x is the number of milliliters of 80% solution and y is the number of milliliters of 40% solution.
Answers
Answer: The chemist needs to mix 25 milliliters of the 80% solution with 75 milliliters of the 40% solution to get 100 milliliters of a 50% solution.
Step-by-step explanation:
Let x be the number of milliliters of 80% solution needed, and y be the number of milliliters of 40% solution needed.
From the first equation, we can write:
0.80x + 0.40y = 0.50(100)
Simplifying this equation, we get:
0.80x + 0.40y = 50
Dividing both sides by 0.20, we get:
4x + 2y = 250
From the second equation, we know that:
x + y = 100
Solving this equation for y, we get:
y = 100 - x
Substituting this expression for y into the first equation, we get:
4x + 2(100 - x) = 250
Simplifying this equation, we get:
2x + 200 = 250
Subtracting 200 from both sides, we get:
2x = 50
Dividing both sides by 2, we get:
x = 25
Substituting this value for x into the equation y = 100 - x, we get:
y = 75
Therefore, the chemist needs to mix 25 milliliters of the 80% solution with 75 milliliters of the 40% solution to get 100 milliliters of a 50% solution.
LeBron tosses a coin and chooses a card from a deck that has the numbers 1 - 4. Answer the questions below to organize the possible outcomes for tossing a coin and choosing a card from a deck that has the numbers 1 - 4.
a. Complete the tree diagram to show the possible outcomes.
b. Complete the list to show the possible outcomes.
c. Complete the table to show the possible outcomes.
d. Count all the possible outcomes from the tree diagram, list and table.
How many possible outcomes are there for tossing a coin and choosing a card from a deck that has the numbers 1 - 4?
Answers
Answers:
1a: The first tree diagram is H - 1, H - 2, H -3, H - 4
The second tree diagram is T - 1, T- 2, T - 3, T - 4
1b: H,1 ║ H,2 ║ H,3 ║ H,4
T,1 ║ T,2 ║ T,3 ║ T,4
1c: ║≡≡║ 1 ║ 2 ║ 3 ║ 4 ║
║ H ║ H1 ║ H2 ║ H3 ║ H4 ║
║ T ║ T1 ║ T2 ║ T3 ║ T4 ║
1d: There are 8 possible outcomes for tossing a coin and choosing a card
from a deck that has the numbers 1-4.
Hope this helps. I couldn't make a tree diagram. The list and the table are both wonky. Sorry for that, I'll also add a picture with the answers directly on the sheet :)
Can someone help?- I will mark brainliest !!
Answers
(Translations LC)
Use the graph to answer the question.
Graph of polygon ABCD with vertices at 1 comma negative 1, 3 comma negative 5, 7 comma negative 5, 5 comma negative 1. A second polygon A prime B prime C prime D prime with vertices at 1 comma negative 6, 3 comma negative 10, 7 comma negative 10, 5 comma negative 6.
Determine the translation used to create the image.
5 units down
5 units up
1 unit down
1 unit up
Answers
The translation used to create the image include the following: A. 5 units down.
What is a translation?In Mathematics and Geometry, the translation of a geometric figure or graph to the left simply means subtracting a digit from the value on the x-coordinate of the pre-image;
g(x) = f(x + N)
Conversely, the translation a geometric figure downward simply means subtracting a digit from the value on the positive y-coordinate (y-axis) of the pre-image; g(x) = f(x) - N.
Based on the information provided, we have:
(x, y) → (x + h, y + k)
(1, -1) → (1, -6).
1 + h = 1
h = 1 - 1
h = 0
-1 + k = -6
k = -6 + 1
k = -5.
Read more on function and translation here: brainly.com/question/31559256
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Choose one point on the scatterplot. What does it represent?
What type of data is best for scatter plots? please don't give a short once sentence explanation
Answers
Answer:
decrease
Step-by-step explanation:
this graph is showing a decorative response to whatever content.
pls help w/math i have so many more questions so yeah thx needed by 2pm
Answers
what is the surface area
Answers
Answer:
75 cm^3
Step-by-step explanation:
The small prism is 3x smaller than the large prism (look at lengths given).
Thus, as the surface area of the small prism is 25 cm^3 the larger prism will be 3x as much surface area.
25 x 3 = 75
Therefore, the surface area will be 75 cm^3.
Answer: 225
Step-by-step explanation:
9 x 25 I believe I’m so sorry if it’s wrong but the s2 should be the long side
50 POINTS PLS HELP AND BRAINLIEST
Answers
Use equivalent fractions to order these fractions from least to greatest: 2 over 3 , 1 over 2, 4 over 12, 5 over 6 . Explain the steps you took to find your answer.
Answers
Answer:
so u take 4/12 and do it to 1/3 then try to do lest to greatest
Step-by-step expla
2/3 5/6 1/2 1/3 try
Miguel is typing up the final copy of his essay for class. He can type about 20 words per minute. He has typed 1,265 words so far, and his final essay is 4,254 words in length.
How can Miguel determine the number of minutes it will take for him to finish typing the rest of his essay?
Match each step of the arithmetic solution with the correct description.
Answers
Answer:
Step 1: Subtract 1265 from 4254 to get the number if words he still needs to type; 2,989
Step 2: Divide 2,989 words by 20 words/minute; 149.45 minutes.
Step 2 is to divide 2,989 words by 20 words per minute to get 149.45 minutes.
Hope this is correct and that it helps. Pls subscribe to Mathlete2022.
Marvin was in charge of ordering sodas for the class fundraiser. He made a circle graph to show the number of each size of soda. However, he accidently put his work in the graph showing the degree measures he used to make the chart instead of the number of sodas he needed and he threw away his original paper showing the number of each. Help him figure out how many of each size of soda he needs to order by answering the questions below. (Hint: There are 360 degrees total in a full circle.)
Answers
Answer:
for a: small=17% medium=38% large=33% extra large=13%
Step-by-step explanation:
Solve for x.
A) 30
B) 45
C) 60
D) 90
Answers
2x+x=90
3x=90
X=30
A
80 points ★ plsss answer these worded problems !!
★ / mrs . green has 8.25 cups of flour for her cooking class. Hector uses 3.75 cups of flour to bake cookies . how much flour is left ?
★ / mr . trang bought 15.5 ft of rope to make a swing . after making the swing , 3.375 ft of rope are left . how much rope did mr . trang use in the swing ?
★ / a street sign is attached to a 92.75 in long pole . the pole is buried 24.25 inches below ground . whats the length of the pole above ground ?
★ / kim lip ( haha ) filled a pitcher with 259/12 [fraction] ounces of water . She
spilled 0.25 ounce when she placed the pitcher on the
table . how much water is left in the pitcher ?
★ / travis is swimming 3.25 feet below the surface of the
water . connor is swimming 5.75 feet below the surface
of the water. how far apart are travis and connor ?
Answers
Answer:
1: 4.5 cups of flour
2: 12.125 ft of rope
3: 68.5 inches above ground
4: 21.3333..... ounces of water
5: 2.5 ft below the surface
Step-by-step explanation:
1: 8.25-3.75=4.5
2: 15.5-3.375=12.125
3: 92.75-24.25=68.5
4: (259÷12)-.25=21.33333.....
5: 5.75-3.25=2.5
Division is repeated _________ of the same numbers
Answers
Answer:
I hope you have gotten your answer
Step-by-step explanation:
It is the repeated subtraction of the same number from a large number down to zero. It is a great way to introduce children to division. Repeated Subtraction is a method that subtracts the equal number of items from a group, also known as division
Rita gets paid $16 per hour for the first 8 hours she works each day. She earns 1 1/2 times her hourly pay rate for time she works over 8 hours each day. Rita′s work day for Monday is described in the list. worked from 8:00 a.m. to 12:00 p.m. took a 30-minute lunch break worked until 6:00 p.m. Rita does not get paid for her lunch break. How much money did Rita earn for the time she worked on Monday? Show or explain all of the steps you used to determine your answer.]
Answers
Answer: $158
Step-by-step explanation:
$16(8) + $24(1 ¼) = $128 + $30 = $158
Rita earned a Total of $196 for the time she worked on Monday.
To determine how much money Rita earned for the time she worked on Monday, we need to calculate her earnings for each portion of the day separately.
1. From 8:00 a.m. to 12:00 p.m. (4 hours):
Rita worked for 4 hours within the first 8 hours, so she earns her regular rate of $16 per hour for this time:
Earnings = 4 hours * $16/hour = $64.
2. From 12:30 p.m. to 6:00 p.m. (5.5 hours):
Rita worked for 5.5 hours beyond the initial 8 hours, so she earns 1.5 times her regular rate for each of these hours:
Earnings = 5.5 hours * ($16/hour * 1.5) = $132.
Now, we can sum up Rita's earnings for both periods:
Total earnings = Earnings from the first period + Earnings from the second period
Total earnings = $64 + $132
Total earnings = $196.
Therefore, Rita earned a total of $196 for the time she worked on Monday.
For more questions on Total .
https://brainly.com/question/30612486
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or
Hayley invited a friend over for dinner. She wants to make personal pies to serve for dessert. Hayley makes 1
1
5
cups of dough to use for the crust and splits the dough evenly between 2 pies. How much dough does Hayley use for each pie?
Use the model to help answer the question.
Answers
Answer:
Step-by-step explanation:
two
A certain type of cereal costs $3.79 for 19.5 ounces.
What is the unit rate?
Enter your answer, rounded to the nearest cent, in the box.
$__per oz.
Answers
Answer:
To find the unit rate, we divide the total cost by the total number of ounces:
Unit rate = total cost ÷ total number of ounces
Unit rate = $3.79 ÷ 19.5 ounces
Unit rate = $0.194 per oz.
Rounding to the nearest cent, the unit rate is $0.19 per oz.
Step-by-step explanation:
ABOVE
CAN SOMEONE PLEASE DRAW DOTS WHERE THE ANSWER IS!! PLLSSS + BRAINLIEST
_____
One of the tables shows a proportional relationship.
Graph the line representing the proportional relationship from this table.
(answers in the pictures below) tyysmm
Answers
Which number is equivalent to 0.51 repeating
Answers
Create a number line that represents the solution set of the inequality w ÷ 7 > 38. Show all your work.
Answers
Answer:
266
Step-by-step explanation:
Therefore, the answer to what divided by 7 equals 38 is 266. You can prove this by taking 266 and dividing it by 7, and you will see that the answer is 38. Tip: For future reference, when you are presented with a problem like "What divided by 7 equals 38?", all you have to do is multiply the two known numbers together.
The answer to your problem will be 266.
Could someone please help me
Answers
Answer: Answer:
Step-by-step explanation: Step-by-step explanation:
Honors Refresher Quiz #8 1. If a figure is dilated by a scale factor of 12, the area of the figure will change by a factor of
Answers
Answer:144
Step-by-step explanation:
When area is dilated you have to multiply the dialation factor by itself, in this case (12 x 12)
What is likely to have a mass close to 3 kilograms
A. 5-year-old-child
B. A Bowling ball
C. A lemon
D. A lion
Answers
B. A Bowling ball
3 kilograms is approximately 7 pounds, the weight of most Bowling balls
B. A Bowling ball
Step-by-step explanation:
Options A and D are most likely to weigh more than 3kg and option C will most likely weigh less but option B can weigh up to 3kg
What changes would you make to solve any problems you might have in your society?
Answers
PLEASE HELP ME
Solve the equation using inverse operations. Check your solutions. In your final answer, include all of your work.
1÷4 x³ = –27÷4
Answers
1. First, divide both sides of the equation by 4.
1÷4 x³/4 = –27/4/4
2. Next, on the left side of the equation, use inverse operations to get rid of the division. This will give us x³ = –27.
3. Then, to solve for x, take the cube root of both sides of the equation.
Cube root of x³ = cube root of –27
4. To check your answer, plug in -3 for x in the original equation and solve.
1÷4 x³ = –27/4
1÷4 (-3)³ = –27/4
1÷4 (-27) = –27/4
1 = 1
Since 1 = 1, the answer checks out.
Therefore, the solution to the equation is x = -3.
Answer:
-3, 3+3i[tex]\sqrt{3}[/tex]/2, 3-3i[tex]\sqrt{3}[/tex]/2
CAN SOMEONE PLEASE ANSWER ALL THESE QUESTIONS!! I WILL K1LL FOR THE ANSWERS RNN PLEASE
(BRAINLIEST + 80 POINTS?)
ANSWER ALL OF THEM PLSS!!
________
Either Table C or Table D shows a proportional relationship.
Plot all the points from the table that shows a proportional relationship.
Table C: (x,y) -- (2,1) (4,3) (6,5) (8,7)
Table D: (x,y) -- (2,1) (6,3) (8,4) (10,5)
________
One of the tables shows a proportional relationship.
Use the points from this table to graph the line representing the proportional relationship.
(graph and x and y coordinates below)
Answers
Y2-y1/x2-x1
(5,225)
(3,135)
225-135/5-3
90/2= 45
Answer= 45
2. Similar to the last
( 6,82.80)
(2,27.60)
82.80-27.60/6-2
55.2/4=13.8
Answer=13.8
C and D question
C shows a proportional relationship
Answer:
Ay bro give this man above me brainliest, he explained everything so perfectly
just do it :)
A startup software company’s total investment for the first two years is $24,894. Write and solve an equation to find the investment for the second year if the first year’s investment is $12,955.
Answers
Answer:x=9689
Step-by-step explanation:based on given conitions,formulate:13205+x=22894
Answer:
12,955 + x = 24,894
x = 11,939