Answers
Related Questions
Solve for x.
A) 30
B) 45
C) 60
D) 90
Answers
2x+x=90
3x=90
X=30
A
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
brainly.com/question/12823386
#SPJ2
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.
i need even more help
Answers
l + w + l + w
2 • l + 2 • w
2(l + w)
Area:
wl
l • w
Neither:
l + w
Answer: hope this helps ♡
Perimeter:
2(l + w) & 2×l + 2×w & l + w + l + w
Area:
l × w & wl
Neither:
l + w
Isabella drove 2 1/3 miles from home to school. Then, she drove 4 3/5 from school to the store and 5 4/5 miles home from the store. Write an addition sentence to show the total number of miles.
Answers
Add 2 1/3 plus 4 3/5 plus 5 4/5 by converting them to improper fractions
Therefore 35/15 + 69/15 + 87/15 equals 191/15 which equals 12 11/15.
Hope this helps, pls subscribe to Mathlete2022.
i need to know the area
Answers
Answer:
Step-by-step explanation:
You would do base times height so 11x11=121 then you divide it by 2 which equals 60.5.
2
B +2bh
B=11
H=18
121+2x11x18=517
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:
234
Step-by-step explanation:
Answer:
209.58mm(Rounded)
Step-by-step explanation:
V=[tex]\pi[/tex]r^2h
=[tex]\pi[/tex](6.5)^2(60)
=7963.94/38
=209.58mm
read the question then answer ones with a ★ beside it .
bryce has a board that is 8[tex]\frac{5}{16}[/tex] feet long .
He cuts off 2[tex]\frac{3}{8}[/tex]
feet to use for a project . what is the length of the board that is left ?
★ . what is the original length of the board ?
★ . what is the length that was cut off ?
★ . write and solve an equation .
★ . the length of the board that is left is ?
Answers
Answer:
The original length of the board is 8 feet.
The length that was cut off is 2 feet.
One possible equation we can use is: x = 8 - 2, where x represents the length of the board that is left. Solving for x, we get x = 6 feet.
The length of the board that is left is 6 feet.
Step-by-step explanation:
We are given that the board was originally 8 feet long. Bryce cuts off 2 feet from the board to use for a project. Therefore, the length of the board that is left is 8 - 2 = 6 feet.
To solve this problem algebraically, we can set up an equation where x represents the length of the board that is left. We know that the original length of the board is 8 feet, and 2 feet was cut off, so we can write:
x = 8 - 2
Simplifying this equation gives us:
x = 6
Therefore, the length of the board that is left is 6 feet.
Help me please!!!!!! ty!
Answers
Answer:
4096/729
Step-by-step explanation:
((-4/3)^2)^3
(16/6)^3
4096/729
(-4/3)^2 = 16/6 because squaring of negative numbers always leads to positive numbers
PLS HELP ASAPPP
(question in picture below) + brainliest/50 points tyy
Answers
Answer:
[tex]\dfrac{3}{2}\; \sf cm/s[/tex]
Step-by-step explanation:
To determine the unit rate corresponding to the proportional relationship shown in the given graph, we need to calculate the slope of the line.
The slope of a line passing through two points (x₁, y₁) and (x₂, y₂) can be found using the slope formula:
[tex]\boxed{\textsf{slope} =\dfrac{y_2-y_1}{x_2-x_1}}[/tex]
Substituting the defined points (0, 0) and (6, 9) into the formula, we can calculate the slope:
[tex]\textsf{slope} =\dfrac{9-0}{6-0}=\dfrac{9}{6}=\dfrac{3}{2}[/tex]
Therefore, the slope of the line is 3/2.
The slope represents the rate of change between the two variables.
Therefore, the unit rate corresponding to this proportional relationship is 3/2 cm/s. This means that for every increase of 2 seconds, there is a corresponding increase of 3 cm.
This question was confusing as I don’t know if I put the right answers for the ones I wrote on
Answers
Answer:
(a) C: $36 per hour; B: $38 per hour
(b) C: c = 36(h -1) +52; B: c = 38(h -1) +42
(c) C: $196; B: $194
(d) 270 = 38(h -1) +42; h = 7
(e) Brian charges $270 for working 7 hours
Step-by-step explanation:
Given a table of costs and hours for hiring DJs Celinda and Brian, you want to know their hourly costs, equations for their costs, cost for 5 hours, and hours for a cost of $270.
(a) Hourly costThe cost of an additional hour can be found by subtracting the cost for 1 hour from the cost for 2 hours:
Celinda: $88 -52 = $36 . . . . . cost increase per hour
Brian: $80 -42 = $38 . . . . . . . cost increase per hour
(b) EquationsWe can use the "point-slope form" equation of a line to write the equations for the costs.
y -k = m(x -h) . . . . . . . line with slope m through point (h, k)
Rearranging, this is ...
y = m(x -h) +k
Here, the slope is the cost per hour. A suitable point is the first one in the table. The variables 'c' and 'h' are defined for us.
Celinda: c = 36(h -1) +52
Brian: c = 38(h -1) +42
(c) 5 hoursUsing h=5 in each of these equations, we have ...
Celinda: c = 36(5 -1) +52 = 196 . . . . cost for 5 hours
Brian: c = 38(5 -1) +42 = 194 . . . . cost for 5 hours
(d) $270 to Brian
Using the equation for Brian's cost, we simply need to set c=270 to have the equation we need:
270 = 38(h -1) +42 . . . . equation to find hours
The solution to that equation is ...
270 -42 = 38(h -1) . . . . . subtract 42
228/38 = h -1 . . . . . . . . . divide by 38
6 +1 = h = 7 . . . . . . . . . . . add 1. This is the solution.
It would cost $270 to hire Brian for 7 hours.
(e) DescriptionThe solution to the equation for c=270 is h=7. Since h represents the number of hours the DJ is working, this solution tells us Brian will charge $270 for working 7 hours.
__
Additional comment
The two equations can be simplified by eliminating parentheses and combining like terms:
Celinda: c = 36h +16
Brian: c = 38h +4
Parts (d) and (e) work together. The "solution" h=7 doesn't mean anything except in the context of the question it is answering. The question is "how many hours for a charge of $270." The value h=7 means the answer is Brian charges $270 for 7 hours' work.
Could someone help me with this quikly
Answers
Answer:
Plan A=3/2 hours Plan B=5/4 hours
Step-by-step explanation:
Plan A equals x
Plan B equals y
So than 3x+2y=7
And 8x+4y=17
Then you multiply the first equation by 2 to get rid of Y. 6x+4y=14 and 8x+4y=17 2x=3 x=1.5 y=1.25
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
jenna wants to wrap a shipping box shaped like a rectangular prism. The box is 22 inches tall and has a square base with sides that each measure 5 inches. How much paper will she use?
Answers
Answer: 420
Step-by-step explanation:
i need more help with this lesson
Answers
Answer:
Step-by-step explanation:
could ya please help me?
Answers
Answer:the trcks what to do that much because 20 avb=vd 55 is 899
Step-by-step explanation:
USE THE DOT PLOT GRAPH TO FIGURE THIS OUT!!
What is the most appropriate measure of center for the data set about 7th graders?
A)mean
B)median
C)range
D)IQR
Answers
Answer:
The most appropriate measure of center for the given data set about 7th graders is the median (option B).
Step-by-step explanation:
The median is the middle value in a data set when the values are arranged in ascending or descending order. It is not affected by extreme values or outliers. There is an outlier in this case (180), which could alter the mean and represent the data inaccurately. The range does not give a measure of center but instead represents the spread of the data. The IQR is a valuable measure for understanding the spread of data and identifying potential outliers but is not suitable for describing the central tendency or average of the data.
BRAINLIEST + 25 POINTS
(questions in the pictures below, please try to answer all)
Answers
Answer: question 1) 12
question 2) 3.3 (repeating)
Step-by-step explanation:
question 1) count x axis (goes from 3 to 5 so 2) the count y axis (36 to 60 so 24) so do y/x or 24/2 which equals 12
question 2) x axis = 6-1.5 aka 4.5 y axis= 20-5 aka 15 y/x aka 15/4.5 which gives you 3.333333333333
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.
The following table shows several ordered pairs of a function, m(x)
x m(x)
-1 -1.5
1 1.5
2 3
4 6
Graph m(x) on a coordinate plane to determine whether or not the function represents a direct variation. In complete sentences, describe your conclusion and reasoning. Include your graph in your answer.
Answers
Answer:
m(x) = 1.5x . . . . direct variation
Step-by-step explanation:
You want to know if the function m(x) represents direct variation, given a table of values.
Direct variationAn equation for direct variation is ...
y = kx
where k is a constant that can be found as the ratio of any (x, y) pair:
k = y/x
k = -1.5/-1 = 1.5/1 = 3/2 = 6/4 = 1.5
The ratios are constant, hence m(x) is direct variation with a constant of variation of 1.5.
GraphThe graph of direct variation is a straight line through the origin. The given points lie on such a line.
The amount of a medicine, in milliliters, that a veterinarian prescribes is proportional to the weight, in kilograms, of a dog as shown on the graph.
What is the unit rate in milliliters per kilogram?
Enter your answer as a decimal in the box.
___ mL/kg
(graph in picture below) + brainliest/50 points
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
The expression 9.00x+4.50y represents the total amount of money Harriet earns at her two jobs, where x represents the number of hours worked at job X and y represents the number of hours worked at job Y. Which shows an equivalent expression to the given expression and correctly describes the situation?
4.50(2x+y), which shows that Harriet earns twice as much per hour at job X than job Y.
4.50(2x+y), which shows that Harriet earns 4.50 times as much per hour at job X than job Y.
13.50xy, which shows that Harriet earns $13.50 each hour she works.
13.50xy, which shows that Harriet earns $13.50 every two hours she works.
Answers
13.50xy, which shows that Harriet earns $13.50 for each hour she works.
This expression represents the total amount of money Harriet earns at both jobs, where x represents the number of hours worked at job X and y represents the number of hours worked at job Y. The coefficient of xy, which is 13.50, represents the amount of money Harriet earns per hour, regardless of which job she is working. Therefore, this expression accurately reflects the situation described
Four swimmers are training for a relay race. Each day they practice by swimming at least 1,600 yards total. The friends evenly divide the number of yards they swim.
Write and solve an inequality to determine how many yards each friend will swim. Show all your work.
Answers
Step-by-step explanation:
Which number is equivalent to 0.51 repeating
Answers
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:
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 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
How can we use the distributive property to find an expression equivalent to 4(5−3x)
? Place the steps in order.
Answers
Answer:
Multiply 4 by 5 and 4 by 3x
Step-by-step explanation:
4 ( 5 -3x ) =
4 x 5 + (4)(-3x)
Answer:
4(5-3x)
4(5) -4(3x)
20-12x
Needed by 2:00pm Thx
Answers
Answer:
1017 cm³
Step-by-step explanation:
To find the volume of this figure we will first need to divide it into 2 sections. First, we will find the volume of the semicircle on top then the cone at the bottom!
1) Semicircle
The simplest way of doing this is to find the volume as if it was a circle and then divide that result by 2! ([tex]\frac{4}{3}[/tex]πr³)
[tex]\frac{4}{3}[/tex] × 3.14 × 6³ = 904.32904.32 ÷ 2 = 452.162) Cone
To find the volume of the cone we need to apply the equation πr²[tex]\frac{h}{3}[/tex] (where h = height)
3.14 × 6² × [tex]\frac{15}{3}[/tex] = 565.23) Add
452.16 + 565.2 = 1017.361017 rounding to the nearest whole number!Hope this helps, have a lovely day! :)
your welcome
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
