Jennifer is playing with a die that has six faces. What is the likelihood that she will roll a four?
A) Certain
B) Likely
C) Unlikely
D) neither likely nor unlikely
I know 100% that isnt right I did a test it is NOT D
The stock market decreased by 135 points during a 5 day week.
What was the average daily change in the market for that week?
Cynthia ran 4 laps in 40 min. What is the rate of number of laps to minutes?
The answer is 1:10 because 4 to 40,
there is 1 for every 10.
So in fractional form your answer is 1/10.
The rate is 0.1 laps in 1 minute, or 1//10, 1 lap in 10 minutes.
What is simplification?Simply put, to simplify is to make something simpler. Simplifying an equation, fraction, or issue in mathematics entails taking something complex and making it simpler. The issue is made simpler by calculations and problem-solving strategies. We can simplify fractions by removing all common elements from the numerator and denominator and putting the fraction in its simplest/lowest form.
It is possible to simplify mathematical formulas by merging and grouping related terms. This makes the term understandable.
Given,
Cynthia ran 4 laps in 40 min.
ratio of laps to minutes is
4:40 = 1:10
1/10 = 0.1/1
so 0.1 laps in 1 minute or 1 lap in 10 minutes.
Hence the rate is 1 lap in 10 minutes: 1/10;
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Hector is competing in a 42 mile bicycle race. He has already completed 18 miles of the race and is traveling at a constant speed of 12 miles per hour when Wanda starts the race. Wanda is traveling at a constant speed of 16 miles per hour.
Write and solve an equation to find when Wanda will catch up to hector
Answer:
Step-by-step explanation:
Compute a · (b ✕ c), where a = i − 3j + k, b = 4i + j + k and c = 9i − j + 3k.
We need to find the answer of the expression [tex]a\cdot (b\times c)[/tex]
The required expression is [tex]a\cdot (b\times c)=0[/tex]
The vectors are
[tex]a=\hat{i}-3\hat{j}+1\hat{k}[/tex]
[tex]b=4\hat{i}+\hat{j}+\hat{k}[/tex]
[tex]c=9\hat{i}-\hat{j}+3\hat{k}[/tex]
Solving the term in the bracket
[tex]b\times c=\begin{vmatrix}\hat{i} & \hat{j} & \hat{k} \\ 4 & 1 & 1 \\ 9 & -1 & 3 \end{vmatrix}\\ =\hat{i}(3+1)-\hat{j}(4\times3-9\times1)+\hat{k}(4\times-1-9\times 1)\\ =4\hat{i}-3\hat{j}-13\hat{k}[/tex]
[tex]a\cdot (b\times c)=(\hat{i}-3\hat{j}+1\hat{k})(4\hat{i}-3\hat{j}-13\hat{k})\\ =1\cdot 4+(-3)\cdot (-3)+1\cdot (-13)\\ =4+9-13\\ =13-13=0[/tex]
So, [tex]a\cdot (b\times c)=0[/tex]
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0.006 is greater than 0.1
Is this true?
How many up/down runs are there in this data? observations 1 2 3 4 5 6 7 8 9 10 # of defects 5 2 3 5 4 3 2 1 2 4?
(a) determine a linear function for the percent of hardwood trees y at 2600 ft in terms of the year x.
A tub of water is emptied at a rate of 3 gallons per minute. The equation y –12 = –3(x – 1) models the amount of water remaining, where x is time (in minutes) and y is the amount of water left (in gallons). Analyze the work shown below to determine the initial amount of water. 1. Solve for the y-variable. y – 12 = –3(x – 1) y – 12 = –3x + 3 y = –3x +15 2. Write the equation using function notation. f(x) = –3x +15 The tub started with ____ gallons of water.
The number of gallons of water initially present in the tub will be 15 gallons.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
A tub of water is discharged at a pace of 3 gallons each moment. The condition y - 12 = - 3(x - 1) models how much water remaining, where x is time (in minutes) and y is how much water is left (in gallons).
Simplify the equation into a slope intercept form, then we have
y - 12 = - 3(x - 1)
y - 12 = - 3x + 3
y = - 3x + 15
The number of gallons of water initially present in the tub will be 15 gallons.
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Alarm for 20 yards of fencing he used fit 5.9 yards to surround one flower garden and 10.3 yards to surround another garden write the amount remaining as a fraction in. Simplest form
Train “A” leaves Westtown and travels at 50 mph toward Smithville, 330 miles away. At the same time, Train “B” leaves Smithville and travels at 60 mph. After how many hours do the two trains meet?
train A travels at 50 mph
train B travels at 60 mph
60 +50 = 110
330/110 = 3
they will meet in 3 hours
estimate the product. choose a method. 81×38
Which is the larger unit, a degree or a radian? Are they very close in size, or very different
The image shows a portion of a bridge supported by two vertical pillars built from the points B and C on the slope below. The length of the bridge between pillar B and pillar C is BLANK feet.
Answer:
The length of the bridge between pillar B and pillar C is 56 feet.
Here's the answer from the plato.
Middle school has 450 students vanlue school has 600 students which school has a greater percent of girls explain
At Appliance Market, a salesperson sells a dishwasher for $569. She gets a commission rate of 18 percent. Which expression represents how much she will receive in commission from the sale?
Answer:
A. 569(0.18)
Step-by-step explanation:
sorry for the like 3 years late answer- but I hope this helps someone. <3
- EDGE 2020
Final answer:
To calculate the commission, multiply the commission rate by the sale price.
Explanation:
To calculate the commission she will receive from the sale, we can use the expression: commission = (commission rate) * (sale price).
In this case, the commission rate is 18 percent, which can be written as 0.18 in decimal form.
Therefore, the expression for the commission is: commission = 0.18 * $569 = $102.42.
So, the salesperson will receive approximately $102.42 in commission from the sale.
A 20 inch flat panel computer moniter is on sale for 249.99.it was reduced $80.00 from the original price. find the percent reduction in price
The percent reduction in the price was approximately 32%.
What are percentages?Percentages are similar to fractions, but the whole part of the fraction is always set as constant, which is always 100.
To convert a fraction to a percentage, we multiply it by 100.
To convert a percentage to a fraction, we divide it by 100.
How to solve the question?In the question, we are given that a 20-inch flat panel computer monitor is on sale for 249.99., and it was reduced by $80.00 from the original price.
We are asked to find the percent reduction in price.
The price reduction = $80.00.
The original price = $249.99.
Therefore, the fraction of reduction in the price can be shown as the ratio of the reduction in the price to the original price, that is, the
Fraction = $80.00/$249.99 = 0.320013.
To convert a fraction to a percentage, we multiply it by 100.
Therefore, the percentage of reduction = 0.320013 * 100% = 32.0013% ≈ 32%.
Therefore, the percent reduction in the price was approximately 32%.
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Which equation is an identity?
7m – 5 = 8m + 7 – m
3w + 8 – w = 4w – 2(w – 4)
9 – (2v + 3) = –2v – 6
–3y + 3 = –3y – 6
Please explain your answer.
how to solve the proportion 2/7=x/42
2/7 = x/42
multiply 42 *2 = 84
then divide by 7
84 /7 =12
x = 12
PLEASE ANSWER THIS QUICKLY! THANK YOU!
Which of the following best explains how a single nucleotide substitution can cause hemoglobin molecules to chain together instead of forming the appropriate protein product?
The mutation causes the removal of an amino acid, which results in a different protein product
. The mutation causes the same amino acid to be repeated multiple times in the protein product, which results in a linear protein structure.
The mutation causes the wrong amino acid to be incorporated into the protein product, which results in improper protein folding.
The mutation causes the protein product to be lengthened due to an increased number of amino acids being incorporated.
If l is a line whose equation is y=5x-3, find the equation of the image of l under each of the following translations a. (x,y) --> (x, y-6) b. (x,y) --> (x+2,y)
Using the numbers 8, 6, 4, and 2 write an expression that equals 7.
( You can not change the order of the numbers and you can only use: parentheses, divided by, multiplication, addition, and subtraction).
A geologist has collected 10 specimens of basaltic rock and 10 specimens of granite. if the geologist instructs a laboratory assistant to randomly select 15 of the specimens for analysis, what is the pmf of the number of basalt specimens selected for analysis? what is the probability that all specimens of one of the two types of rock are selected for analysis?
The PMF of the number of selecting basalt specimen is [tex]\boxed{\bf P=^{10}C_{x}(0.5)^{x}(0.5)^{10-x}}[/tex] and the probability of selecting all specimen of one of two type of rocks is [tex]\boxed{\bf 0.0325}[/tex].
Further explanation:
Concept used:
The probability of an event [tex]E[/tex] can be calculated as follpws:
[tex]\boxed{P(E)=\dfrac{n(E)}{n(S)}}[/tex]
Here, [tex]n(E)[/tex] is the number of favorable outcomes in an event [tex]E[/tex] and [tex]n(S)[/tex] is the number of element in sample space [tex]S[/tex].
The probability mass function of getting exactly [tex]r[/tex] success in [tex]n[/tex] independent trial in an experiment can be expresses as follows:
[tex]\boxed{P=^nC_{r}p^{r}q^{n-r}}[/tex]
Here, [tex]p[/tex] is the success probability and [tex]q[/tex] is the failure probability of an event.
Calculation:
A geologist has collected [tex]10[/tex] specimens of ballistic rock and geologist collected [tex]10[/tex] specimens of granite.
The total number of specimens is [tex]20[/tex].
The sample space is the collection of all possible outcomes in an experiment.
Therefore, the total possible outcomes are [tex]20[/tex].
The probability of selecting ballistic rock can be calculated as follows:
[tex]\begin{aligned}P_{b}&=\dfrac{10}{20}\\&=\dfrac{1}{2}\\&=0.5\end{aligned}[/tex]
The probability of selecting granite can be calculated as follows:
[tex]\begin{aligned}P_{g}&=\dfrac{10}{20}\\&=\dfrac{1}{2}\\&=0.5\end{aligned}[/tex]
The PMF of selecting exactly [tex]x[/tex] basalt specimen for analysis can be calculated as follows:
[tex]\boxed{P=^{10}C_{x}(0.5)^{x}(0.5)^{10-x}}[/tex]
Consider [tex]A[/tex] as an event that all rocks are selecting from one rock and [tex]n(A)[/tex] as the number of favorable outcomes in an event [tex]A[/tex].
The number of favorable outcomes in an event [tex]A[/tex] can be calculated as follows:
[tex]\begin{aligned}n(A)&=\left(^{10}C_{10}\cdot ^{10}C_{5}\right)+\left(^{10}C_{10}\cdot ^{10}C_{5}\right)\\&=\left(\dfrac{10!}{10!\cdot (10-10)!}\cdot \dfrac{10!}{5!\cdot (10-5)!}\right)+\left(\dfrac{10!}{10!\cdot (10-10)!}\cdot \dfrac{10!}{5!\cdot (10-5)!}\right)\\&=\dfrac{10\cdot 9\cdot 8\cdot 7\cdot 6}{5\cdot 4\cdot 3\cdot 2\cdot 1}+\dfrac{10\cdot 9\cdot 8\cdot 7\cdot 6}{5\cdot 4\cdot 3\cdot 2\cdot 1}\\&=252+252\\&=504\end{aligned}[/tex]
The total possible outcomes of selecting [tex]15[/tex] rocks in [tex]20[/tex] rocks can be calculated as follows:
[tex]\begin{aligned}n(S)&=^{20}C_{15}\\&=\dfrac{20!}{15!\cdot (20-15)!}\\&=\dfrac{20\cdot 19\cdot 18\cdot 17\cdot 16\cdot 15!}{15!\cdot 5!}\\&=\dfrac{20\cdot 19\cdot 18\cdot 17\cdot 16}{5\cdot 4\cdot 3\cdot 2\cdot 1}\\&=19\cdot 3\cdot 17\cdot 16\\&=15504\end{aligned}[/tex]
The probability [tex]P(A)[/tex] of selecting all specimen of one of two type of rocks can be calculated as follows:
[tex]\begin{aligned}P(A)&=\dfrac{504}{15504}\\&=0.0325\end{aligned}[/tex]
Thus, the probability that all specimens of one of the two types of rock are selected for analysis is [tex]\boxed{\bf 0.0325}[/tex].
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Answer details:
Grade: College school
Subject: Mathematics
Chapter: Probability
Keywords: Basalt specimen, geologist, rock, granite, PMF, probability mass function, exactly, probability, possible outcomes, favorable, failure success, , event, experiment, trial, P=n(E)/n(S).
The PMF of the number of basalt specimens selected for analysis ranges from P(X = 0) to P(X = 10), and the probability of selecting all specimens of one type of rock (either basalt or granite) is 0.000061036.
To solve this problem, we need to find the probability mass function (PMF) of the number of basalt specimens selected for analysis and the probability of selecting all specimens of either basalt or granite.
Given information:
- There are 10 specimens of basaltic rock and 10 specimens of granite.
- The laboratory assistant will randomly select 15 specimens for analysis.
Step 1: Find the PMF of the number of basalt specimens selected for analysis.
Let X be the random variable representing the number of basalt specimens selected for analysis.
The possible values of X range from 0 to 10 (since there are 10 basalt specimens).
The PMF of X can be calculated using the binomial probability formula:
P(X = k) = (C(n, k) [tex]\times[/tex] ([tex]p^k[/tex]) [tex]\times[/tex] [tex](1-p)^{(n-k)}[/tex])
where:
n = total number of trials (selecting 15 specimens)
k = number of successes (number of basalt specimens selected)
p = probability of success (selecting a basalt specimen) = 10/20 = 1/2
q = probability of failure (selecting a granite specimen) = 1 - p = 1/2
The PMF of X for different values of k is as follows:
P(X = 0) = C(15, 0) [tex]\times[/tex] [tex](1/2)^0[/tex] [tex]\times[/tex] [tex](1/2)^15[/tex] = 0.000030518
P(X = 1) = C(15, 1) [tex]\times[/tex] [tex](1/2)^1[/tex] [tex]\times[/tex] [tex](1/2)^14[/tex] = 0.001525879
P(X = 2) = C(15, 2) [tex]\times[/tex] [tex](1/2)^2[/tex] [tex]\times[/tex] [tex](1/2)^13[/tex] = 0.030517578
Step 2: Find the probability of selecting all specimens of one type of rock.
The probability of selecting all 10 basalt specimens = P(X = 10) = C(15, 10) [tex]\times[/tex] (1/2)^10 [tex]\times[/tex] (1/2)^5 = 0.000030518
The probability of selecting all 10 granite specimens = P(X = 0) = 0.000030518
Therefore, the probability of selecting all specimens of one type of rock (either basalt or granite) is:
P(X = 10) + P(X = 0) = 0.000030518 + 0.000030518 = 0.000061036
In summary, the PMF of the number of basalt specimens selected for analysis ranges from P(X = 0) to P(X = 10), and the probability of selecting all specimens of one type of rock (either basalt or granite) is 0.000061036.
The table below shows two equations:
Equation 1 |2x − 3| + 5 = 4
Equation 2 |5x + 3| − 10 = 3
Which statement is true about the solution to the two equations? (1 point)
Equation 1 and equation 2 have no solutions.
Equation 1 has no solution and equation 2 has solutions x = 2, −3.2.
The solutions to equation 1 are x = 1, 2 and equation 2 has no solution.
The solutions to equation 1 are x = 1, 2 and equation 2 has solutions x = 2, −3.2.
When she subtracts 4 from both sides, 1/2x = –1/2x results. What is the value of x?
Answer: The value of x is 0.
Explanation:
Since we have given that
[tex]\frac{1x}{2}=\frac{-1x}{2}[/tex]
According to question,
If she subtracts 4 from both sides, our equation becomes,
[tex]\frac{1x}{2}-4=\frac{-1x}{2}-4\\\\\text{ by transposing the like terms on the both sides, we get}\\\\\frac{1}{2}+\frac{1x}{2}=-4+4\\\\x=0[/tex]
Hence, the value of x is 0.
in a recent year, there were approximately 125 million moviegoers in a certain country. Of these, about 12/25 were ages 27-37. Find the approximate number of people ages 27-37 who attended the movies that year.
what is the slope of the line represented by the equation 2x+ 3y= -12
Answer:
Slope: -2/3
Step-by-step explanation:
In order to solve this we first have to clear the equation for Y:
[tex]2x+ 3y= -12\\3y=-12-2x\\y=\frac{-12-2x}{3}\\ y=-4-\frac{2}{3} x[/tex]
Remember that the equation in the form of Y is represented in this way:
y=mx+c
Where M is the slope and C is the constant, so the slope is the number that is multiplying x, in the equation, in this case -2/3 is the number that is multiplying x, sot eh slope of the equation is -2/3
Norfolk va has a population of 242,628 people. Baltimore, Md has 376,865 more people than Norfolk. Charleston,SC has 496,804 less than Baltimore. What is the total population of all 3 cities?
The total population of Norfolk, VA, Baltimore, MD, and Charleston, SC is 984,810 people. This is calculated by adding the respective populations of the three cities together.
Explanation:The total population of the three cities can be found by adding their respective populations together. Given that Norfolk, VA has a population of 242,628 people, and Baltimore, MD has 376,865 more people than Norfolk, we calculate the population of Baltimore by adding these two figures together to get 619,493 people. Charleston, SC has 496,804 less than Baltimore, so its population is found by subtracting 496,804 from 619,493 to get 122,689 people. To find the total population of all 3 cities, we add the populations of Norfolk, Baltimore and Charleston together, giving us 984,810 people in total.
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Explain how rays AB and AC form both a line and an angle.
Answer:
An angle is defined as two rays with a common endpoint, so CAB (or BAC) is an angle. A line is described as an infinite set of points that extend forever in either direction, which these rays also do.
What did you include in your response? Check all that apply. (You should have all of these)
Angles are rays with a shared endpoint.
Lines extend forever in either direction.
Rays AB and AC extend forever in either direction.