chinagoeswest
Calculators
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
chinagoeswest
chinagoeswest
Home
General
Algebra
Geometry
Coordinate-geometry
Statistics
Calculus
Qna
Math
MATH SOLVE
Home
The specific gravity of a substance is the ratio of its weight to the weight of an equal volume of water. Kerosene weighs 0.82 gram per cubic centimeter and water weighs 1 gram per cubic centimeter. What is the specific gravity of kerosene?
General
2 months ago
Bethany and her brother ben decided to go through a corn maze. Bethany starts and walks 10 feet north, 30 feet west and then 20 feet north. Ben walks 20 feet North, 25 feet east, and then 15 Feet south. How far apart are Bethany and Ben when they stop walking?
General
2 months ago
The problem is in the photo. I need to find the angle measure of UST if angle 1 is 5x-1 and angle 2 is 3x+6.
General
2 months ago
An accident investigator measured the skid marks of one of the vehicles involved in an accident. The length of the skid marks was 175ft. Use the formula s=24d−−−√ to find the speed of the vehicle before the brakes were applied. Round your answer to the nearest tenth.
General
2 months ago
Carl is boarding a plane. He has 2 checked bags of equal weight and a backpack that weight 4kg. The total weight of Carl’s baggage is 35kg.Write an equation to determine the weight, w, of each of Carl’s checked bags.
General
2 months ago
A rectangle has a perimeter of 48 cm and a width of 6 cm. Use the formula P=2ℓ+2w to find the length.a. Write the formula in the terms of ℓb. Substitute the clues you are given into the rearranged formula. What is the length?
General
2 months ago
Consider the equation 2(5x - 4) = ax + bFind a value for a and b so that the equation has no solution.I’ll give you 10 points please I really need help!
General
2 months ago
An elementary school is in a growing suburb. The school’s principal estimates that the current enrollment of 750 students will increase 5% each year for the next10 years. By what percent will the enrollment increase over 10 years?
General
2 months ago
1. Write the equation of the line passing through the points (−1, 2) and (3, 4)A. y = 2x − 2B. y = 2x − 10C. y = 1/2x + 5/2D. y = 1/2x − 5/22. A cayenne pepper plant's height when purchased was 3 inches. One week later, the plant 's height was exactly 4.3 inches. A bell pepper plant was also purchased at a height of 3 inches. Its height, h, after x weeks of growth is represented by h = 1.3x + 3. Assuming both plants continue to grow at a constant rate, which statement BEST compares the rate of change per week of the pepper plants?A. 3 > 1.3B. 4.3 > 3C. 1.3 = 1.3D. 3 = 3
General
2 months ago
PLEASE HELP ME WITH THIS QUESTION, 100 PTSDrag a statement or reason to each box to complete the proof.If 3(x−4)=x+4, then x=8.Statement Reason1. 3(x−4)=x+4 blank2. 3x−12=x+4 blank3. 3x−12+12=x+4+12 4. blank Simplifying5. 3x−x=x+16−x blank6.blank Simplifying7. 2x2=162 blank8. blank Simplifying2x=16, x=8, 3x=x+16, subtraction property of equality, distributive property, given, addition property of equality, division property of equality.
General
2 months ago
4.What is the significance of a correlation coefficient of 0.3?A. The points all lie very close to the line of fit, and the line is decreasing.B. The points all lie very close to the line of fit, and the line is increasing.C. The points do not follow the line of fit, and the line is decreasing.D. The points do not follow the line of fit, and the line is increasing.
General
2 months ago
The mayor of a town has proposed a plan for the construction of an adjoining community. A political study took a sample of 1000 voters in the town and found that 60% of the residents favored construction. Using the data, a political strategist wants to test the claim that the percentage of residents who favor construction is more than 56%. Find the value of the test statistic. Round your answer to two decimal places.
General
2 months ago
Occasionally you may encounter an angle that's given in the old fashioned degrees/minutes/second form, as described in the box on page 286 of the textbook. A degree is divided into 60 minutes (or minutes of degree), and a minute (of degree) is divided into 60 seconds. Let a = 3 degree 5'17". Then a = degrees (in decimal notation) and a = radians. Again, enter your answers showing at least 4 digits.
General
2 months ago
Use Newton's method to find the second and third approximation of a root of x3+x+2=0 starting with x1=−1 as the initial approximation. The second approximation is x2 = -18/13 The third approximation is x3 =
General
2 months ago
Part of a university's professor's job is to publish his or her research. This task often entails reading a variety of journal articles to keep up to date. To help determine faculty standards, a dean of a business school surveyed a random sample of 12 professors across the country and asked them to count the number of journal articles they read in a typical month. These data are listed here. Estimate with 90% confidence the mean number of journal articles read monthly by professors.9 17 4 23 56 30 41 45 21 10 44 20
General
2 months ago
In a recent survey of high school students, it was found that the average amount of money spent on entertainment each week was normally distributed with a mean of $52.30. Suppose you are told that there is an 80% probability that a randomly-selected student spends somewhere between $49.74 and $54.86. What is the standard deviation of the amount of money spent by high school students monthly?
General
2 months ago
Laura retired from her job recently, and she has saved about $493,133.00 over the course of her career. She plans to withdraw $1,695.00 each month to pay for living expenses. After a certain amount of time, the balance in Laura's account is $459,233.00. How many months have passed since Laura retired?
General
2 months ago
Determine the minimum sample size required when you want to be 99% confident that the sample mean is within one unit of the population mean and sigmaequals15.2. Assume the population is normally distributed.
General
2 months ago
The director of admissions at the University of Maryland, University College is concerned about the high cost of textbooks for the students each semester. A sample of 25 students enrolled in the university indicates that X (bar) = $315.4 and s = $43.20.a. Using the 0.10 level of significance, is there evidence that the population mean is above $300?b. What is your answer in (a) if s = $75 and the 0.05 level of significance is used?c. What is your answer in (a) if X (bar) = $305.11 and s = $43.20?d. Based on the information in part (a), what decision should the director make about the books used for the courses if the goal is to keep the cost below $300?
General
2 months ago
Solve for x 2x^2 + 7x -15 = 0
General
2 months ago
Previous
1
2
3
4
5
6
7
8
9
10
11
12
13
Next