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MATH SOLVE
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A certain standardized test's math scores have a bell-shaped distribution with a mean of 520 and a standard deviation of 110. Complete parts (a) through (c). (a) What percentage of standardized test scores is between 190 and 850? ____ (Round to one decimal place as needed.) (b) What percentage of standardized test scores is less than 190 or greater than 850? ____ (Round to one decimal place as needed.)(c) What percentage of standardized test scores is greater than 740? ____ (Round to one decimal place as needed.)
General
2 months ago
Sarah, the yearbook editor, and Mrs. Moore, the yearbook sponsor, are reviewing costs to produce the yearbook. Newyearbook design software costs $800, and it costs $15 to print each yearbook.1. Define the variables in this situation:2. Complete the table to explore this relationship# of yearbooksproducedCost in dollarsProcessLetLetInput variable:Output variable:3. Write an algebraic rule that describes this situation.
General
2 months ago
A yacht is traveling 35° west of south at 15 miles/hour in still water. Find the component form of vector r, which represents the yacht's motion. -8.6 15 -16.72 215 235 -12.29 35
General
2 months ago
When reading a book, Charlie made a list by writing down the page number of the last page he finished reading at the end of each day. (He always finished reading a page that he started.) His mom thought his list indicated the amount of pages he had read on each day. At the end of the $8^{\text{th}}$ day of reading, she added the numbers on his list and thought Charlie had read 432 pages. If Charlie started reading the book on page one, and he read the same amount of pages each day of this eight- day period, how many pages did he actually read by the end of the $8^{\text{th}}$ day?
General
2 months ago
One day, Karen bought 24 random cans of soup from a grocery store. Suppose that 7% of cans sold at that particular grocery store are dented, and assume the store's inventory is large enough that no individual customer's purchase affects the dent rate for the remaining cans. What is the probability that Karen has bought at least one dented can? Express your answer as a percentage precise to one decimal place.
General
2 months ago
In answering on a multiple choice test, a student either know the answer or guesses. Let p be the probability that the students knows the answer and 1-p be the probability that the student guesses. Assume that a student who guesses at the answer will be correct with probability 1/m, where m is the number of multiple choice alternatives. What is the conditional probability that a student knew the answer to a question when he or she answered it correctly?
General
2 months ago
For any integer k > 1, the term "length of an integer" refers to the number of positive prime factors, not necessarily distinct, whose product is equal to k. For example, if k = 24, the length of k is equal to 4, since 24 = 2 × 2 × 2 × 3. If x and y are positive integers such that x > 1, y > 1, and x + 3y < 1,000, what is the maximum possible sum of the length of x and the length of y?
General
2 months ago
Write and graph a system of inequalities that models the situation. Miranda just got an after school job at a kiosk. She's planning out how much time she needsfor her job, and how much time she needs for school. She wants to work at least 10 hours aweek at the kiosk, and at least 12 hours a week on homework/studying. After deducting time inschool, Miranda has about 36 hours of free-time a week (including weekends). What is thefeasible region for her schedule?
General
2 months ago
It takes the high-speed train x hours to travel the z miles from Town A to Town B at a constant rate, while it takes the regular train y hours to travel the same distance at a constant rate. If the high-speed train leaves Town A for Town B at the same time that the regular train leaves Town B for Town A, how many more miles will the high-speed train have traveled than the regular train when the two trains pass each other?(A) z(y – x)/x + y(B) z(x – y)/x + y(C) z(x + y)/y – x(D) xy(x – y)/x + y(E) xy(y – x)/x + y
General
2 months ago
The relationship between the amount of money x that Cannon Precision Instruments spends on advertising and the company's total sales S(x) is given by the following function where x is measured in thousands of dollars. S(x) = −0.002x3 + 0.4x2 + 9x + 500 (0 ≤ x ≤ 200) Find the rate of change of the sales with respect to the amount of money spent on advertising.
General
2 months ago
Solutions of aluminum nitrate and sodium sulfate react to form sodium nitrate and aluminum sulfate. Balance this reaction. _Al(NO3)3(aq)+__Na2SO4(aq) —> Al2(SO4)3(s) + ___ NaNO3(aq)1,3,1,62,3,1,62,3,1,33,3,2,6
General
2 months ago
Solve the problem. Type the number in the box that correctly completes the sentence.Nimrod wanted to build a tower three miles high. He wants to know how far would it be from the top of his tower to a point four miles away from the base of the tower. The distance would be Answer miles.
General
2 months ago
What I the equation in standard form of the line that passes through the points(4,-8) and has a slope of 1/4
General
2 months ago
Find the partial fraction decomposition of x-3/x(x^2+3)
General
2 months ago
The table shows the transportation method of employees at a certain company. What percent of the employees walk to work?Car: 758Bus: 530Walk: 7Other: 105Somebody help, please.I'm in middle school btw. Idek why it says college
General
2 months ago
Given the following equation for a hyperbola: 16x^2-9y^2-64x-90y-305=0Write the equation in standard form and graph it.(label the center vertices and slanted asymptotes)(Show details please!)
General
2 months ago
To qualify for the long jump competition an athlete must jump a combine distance of more than 16 m and three jams Jackie jumped 4.86 m 5.428 m and 5.9 m did Jackie qualified for the competition
General
2 months ago
Carrie manages a catering company. She rented 325 chairs each week for the first two weeks of May. Carrie rented 750 chairs each week for the first two weeks of April. The chair rental company forgot to send 23 chairs. How many chairs did Carrie receive in those 4 weeks? Show your work
General
2 months ago
Evaluate the surface integral ModifyingBelow Integral from nothing to nothing Integral from nothing to nothing With Upper S f (x comma y comma z )dS using a parametric description of the surface. f (x comma y comma z )equalsx squared plus y squared, where S is the hemisphere x squared plus y squared plus z squared equals 36, for zgreater than or equals0 The value of the surface integral is nothing. (Type an exact answers, using pi as needed.)
General
2 months ago
The top and bottom margins of a poster are 2 cm and the side margins are each 8 cm. If the area of printed material on the poster is fixed at 386 square centimeters, find the dimensions of the poster with the smallest area.
General
2 months ago
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