Mathematics

a new toy is regularly priced at $26.99 is on sale for 3/4 off. write an expression to represent the price oc the toy,p minus 34 of the price. then, combine like terms to simplify the expression
1 Answer
there can be at most 1100 people in the Pokmon conference room. There are currently 20 tables set up the canned seat 10 people each. there are additional tables in storage that seats 25 people each
1 Answer
Please help, I need input on if I did this correctly and you just substitute.I have the function h(t) = -16t^2 + 15t + 6.5t equals 15/32.If you substitute 15/32 for t, what do you get?Any help is appreciated, thank you very much!
1 Answer
Rachel types 162 words in 3 minutes. Rachel types at a constant rate.
1 Answer
a boat is 600 meters from the base of a cliff. Erika, who is sitting in the boat, notices that the angle of elevation to the top of the cliff is 32. How high is the cliff?
2 Answers
On April 14-15, 1921 in Silver Lake.Colorado, 76 inches of snow fell in24 hours, at an average rate of3.2 inches per hour. Find a rule forthe linear function that describes theamount of snow after x hours at theaverage rate.
1 Answer
HELP!! i dont understand this math question and need help
2 Answers
what is the length of the missing side of the triangle? 24,66 29.15 26.5 30.6
1 Answer
Identify the binomial that is a factor of the polynomial P(x) = x^3 + 5x^2 9x 45.
2 Answers
The quadratic mean of two real numbers x and y equals p (x 2 y 2)/2. By computing the arithmetic and quadratic means of different pairs of positive real numbers, formulate a conjecture about their relative sizes and prove your conjecture.?
2 Answers
4x - 2y = 0-x - 2y = -25
1 Answer
What is the solution of the equation?A.5, 11B.5C.11D.11
1 Answer
g 4. You start a dog walking business. Define to be a random variable denoting how many dogs you walkthis week. The probability mass function (pmf),f(x), o'is defined as follows: 0 1 2 3 4 5 6 7 P(X = x) 0.14 0.12 0.15 0.23 0.18 0.09 0.08 0.01 (a) Verify that f(x) is a valid probability mass function. (b) Find the probability that you will walk at least two dogs this week. (c) Compute the expected number of dogs you will walk this week. (d) Compute the expected value of X2. (e) Compute Var[x] = E(X2) (E[X])2.
2 Answers
A machine makes 300 boxes in 15 minutes which expression equals the unit rate in box per hour
2 Answers
Im the slope-intercept form, what variable is used to represent the y-intercept? Y=Mx+bA. M is the y-interceptB. B is the y-intercept
1 Answer
The length of a rectangle is two more than four times the width if the perimeter is 54 inches what are the length and width?
1 Answer
Suppose a statistics teacher wants to know whether the numberof hours students spend studying in a group affects the finalcourse grade. In each part, explain whether the research methoddescribed is a randomized experiment or an observationalstudy.a) Each student keeeps a log of the hours he or she spendsstudying in a group and reports the total after the course iscompleted.b) Students are randomly assigned to study groups. The teachertells each group how often to meet. This varies from one hour theday before each exam to two hours per week.c) Students voluntarily join groups based on how often thegroups will meet. The groups are designated as meeting weekly,meeting only before exam,s or meeting whenever enough members feelthat it is necessary.
2 Answers
Why do equivalent ratios form a straight line when graphed?
2 Answers
Which equation does not support the fact that polynomials are closed under multiplication? 11=11/xx=11x=x1/33=1
1 Answer
Out of each 100 products , 93 are ready for purchase by customers. If you selected 20 products, what would be the expected mean number that would be ready to purchase by customers?
2 Answers
ASAP Correct Penn Foster answer onlywhich of the following is a goal of the globalization movement?A. Nations should pass regulations to protect infant industries B. Removing barriers to trade C. Tariffs are an acceptable way to protect a nation's manufacturing D. Nations should feel free to have different trade standards with different nations
2 Answers
Which technique for gathering data (observational study or experiment) do you think was used in the following studies? Explain your answer. (a) The U.S. Census Bureau tracks population age. In 1900, the percentage of the population that was 19 years old or younger was 44.4%. In 1930, the percentage was 38.8%; in 1970, the percentage was 37.9%; and in 2000, the percentage in the age group was down to 28.5% (The First Measured Century, T. Caplow, L. Hicks, B. J. Wattenberg). This is an experiment because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured. This is an observational study because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured. This is an experiment because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured. This is an observational study because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured. (b) After receiving the same lessons, a class of 100 students was randomly divided into two groups of 50 each. One group was given a multiple-choice exam covering the material in the lessons. The other group was given an essay exam. The average test scores for the two groups were then compared. This is an experiment because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured. This is an observational study because observations and measurements of individuals are conducted in a way that doesn't change the response or the variable being measured. This is an observational study because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured. This is an experiment because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured.
2 Answers
Compare A and B in three ways, where Aequals52 comma 698 is the number of deaths due to a deadly disease in the United States in 2005 and Bequals17 comma 481 is the number of deaths due to the same disease in the United States in 2009. a. Find the ratio of A to B. b. Find the ratio of B to A. c. Complete the sentence: A is ____ percent of B.
2 Answers
Identify the type I error and the type II error that correspond to the given hypothesis. The percentage of adults who have a job is equal to 88 %. Identify the type I error. Choose the correct answer below. A. Fail to reject the null hypothesis that the percentage of adults who have a job is equal to 88 % when that percentage is actually different from 88 %. B. Fail to reject the null hypothesis that the percentage of adults who have a job is equal to 88 % when the percentage is actually equal to 88 %. C. Reject the null hypothesis that the percentage of adults who have a job is equal to 88 % when that percentage is actually equal to 88 %. D. Reject the null hypothesis that the percentage of adults who have a job is equal to 88 % when that percentage is actually different from 88 %. Identify the type II error. Choose the correct answer below. A. Reject the null hypothesis that the percentage of adults who have a job is equal to 88 % when that percentage is actually different from 88 %. B. Reject the null hypothesis that the percentage of adults who have a job is equal to 88 % when the percentage is actually equal to 88 %. C. Fail to reject the null hypothesis that the percentage of adults who have a job is equal to 88 % when the percentage is actually equal to 88 %. D. Fail to reject the null hypothesis that the percentage of adults who have a job is equal to 88 % when that percentage is actually different from 88 %.
1 Answer