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Hi hi. I have a legit question now.If the mean is 52$ and the standard deviation is 3$ how do you find the z score? My problems for this are A. Less than 50B. More than 59C. More than 40And D. Between 48 and 57$But I'm a little unsure on how to find these percentages without the x value. Thanks!
General
4 months ago
The perimeter of a triangle is 137 cm. If three sides of the triangle are x + 7cm, 2x - 5 and 3x - 3 cm, what is the length of each side ?
General
4 months ago
A, B and C are collinear and B is between a and C. The ratio of AB to AC is 3:2. If A is at (4,8) and B is at (7,2) what are the coordinates of point C
General
4 months ago
Find the area of the figure. A) 41 cm2 B) 90 cm2 C) 95 cm2 D) 100 cm2 E) 106 cm2 A is out
General
4 months ago
Which rule describes the composition of transformationsthat maps AJKL to AJ"K"L"?R0. 9000 To, -2(x, v)T0, -2 Ro, 900(x,y)R0, 900 0 T-2, olx, y)T-2,00 Ro, 900(x, y)
General
4 months ago
The Allied Taxi Company charges $2.50 to pick up a passenger and then adds $1.95 per mile. Isaac was charged $27.46 togo from one city to another. If x represents the number of miles driven by the taxi, which linear equation can be used tosolve this problem, and how many miles did Isaac travel, rounded to the nearest tenth?
General
4 months ago
What is the value of x in the equation 3 x minus 4 y equals 65, when y equals 4?x equals 13 and one-fourthx equals 21 and two-thirds
General
4 months ago
A, B and C are collinear and B is between A and C. The ratio of AB to AC is 1:3. If A is at (2,-6) and B is at (3,-1) what are the coordinates of point C
General
4 months ago
Using a directrix of y = −3 and a focus of (2, 1), what quadratic function is created?
General
4 months ago
Factor each linear expression. If the expression cannot be factored, write cannot be factored. 36x – 9
General
4 months ago
The initial price of buzz stock is $20 per share. After 20 days the stock price is $30 per share and after 40 days the price is $35 per share. Assume that while the price of the stock is not zero it can be modeled by a quadratic function. (a) Find the multipart function s(t) giving the stock price after t days.
General
4 months ago
(a) What is the escape speed on a spherical asteroid whose radius is 500 km and whose gravitational acceleration at the surface is 3.0 mlsz? (b) How far from the surface will a particle go if it leaves the asteroid's surface with a radral speed of 1000 m/s? (c) With what speed will an object hit the asteroid if it is dropped from 1000 km above the surface?
General
4 months ago
The price of compact fluorescent light bulbs fell because of improvements in production technology. As a result, the demand for incandescent light bulbs decreased. This caused the price of incandescent light bulbs to fall; as the price of incandescent light bulbs fell the demand for incandescent light bulbs decreased even further." Evaluate this statement.
General
4 months ago
In a doctor's office, the receptionist's annual salary is $159,000 less than that of the doctor. Together, the doctor and the receptionist make $227,000 per year. Find each person's annual income.
General
4 months ago
Michael has 2 options to invest $10,000:1. 4% Simple Interest for 10 years.2. 3.25% Compound Interest for 10 years.Which will earn him more money?Option 1Option 2They are equalQuestion 3 :Cara took out a loan for a new car of $24,000. She wants to know which financing option she should take:1. 3% simple interest for 12 years2. 4% simple interest for 8 years3. 3.5% compound interest for 6 yearsOption 1Option 2Option 3They are all equal
General
4 months ago
Law of cosines: a2 = b2 + c2 – 2bccos(A)Which equation correctly uses the law of cosines to solve for y?92 = y2 + 192 – 2(y)(19)cos(41°)y2 = 92 + 192 – 2(y)(19)cos(41°)92 = y2 + 192 – 2(9)(19)cos(41°)y2 = 92 + 192 – 2(9)(19)cos(41°)
General
4 months ago
HURRY PLEASEWhich of the following best describes deductive reasoning?A the type of reasoning that uses information such as theorems or statements previously assumed to betrue to show that a statement is trueB. the type of reasoning that uses several observations or draws upon patterns to form a conclusionC. the type of reasoning that always needs a counterexample to support its claimsD. the type of reasoning that uses specific information to create a general rule
General
4 months ago
Evans Electronics is concerned about a low retention rate for its employees. In recent years, management has seen a turnover of 10% of the hourly employees annually. Thus, for any hourly employee chosen at random, management estimates a probability of 0.1 that the person will not be with the company next year. Choosing 3 hourly employees at random, what is the probability that 1 of them will leave the company this year?
General
4 months ago
A box contains four black pieces of cloth, two striped pieces, and six dotted pieces. A piece is selected randomly and then placed back in the box. A second piece is selected randomly. What is the probability that: (a) both pieces are dotted? (b) the first piece is black and the second piece is dotted? (c) one piece is black and one piece is striped?
General
4 months ago
Question 10Suppose that a student is working on a statistic project using data on pulserates collected from a random sample of 100 students from her college. Shefinds a 95% confidence interval for mean pulse rate to be (65.5, 71.8). Explainhow each of the statement below would indicate an improper interpretation ofthis intervala) I am 95% sure that all students will have pulse rates between 65.6 and71.8 beats per minuteb) I am 95% sure that the mean pulse rate for this sample of students will fallbetween 65.5 and 71.8 beats per minutec) I am 95% sure that the confidence interval for the average pulse rate of allstudents at this college goes from 65.5 to 71.8 beats per minuted) I am sure that 95% of all students at this college will have pulse ratesbetween 65.5 and 71.8 beats per minutee) I am 95% sure that the mean pulse rate for all US college students inbetween 65.5 and 71.8 beats per minutef) Of the mean pulse rates for students at this college, 95% will fall between65.5 and 71.8 beats per minuteg) Of random samples of this size is taken from students at this college, 95%will have mean pulse rates between 65.5 and 71.8 beats per minute.
General
4 months ago
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