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MATH SOLVE
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The world's population was 5.51 billion on January 1, 1993 and 5.88 billion on January 1, 1998. Assume that at any time the population grows at a rate proportional to the population at that time. In what year should the world's population reach 7 billion? (Give a calendar year. For example: 2001)
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2 months ago
When it is 1:00 a.m. in Toronto, it is 3:00 a.m. in Rio de Janiero, and when it is 10:00 a.m. in Rio de Janiero, it is 11:00 p.m. in Melbourne. You leave Toronto to fly to Rio de Janiero, but you accidentally left your watch on Melbourne time. Your watch says that you leave Toronto at 9:30 a.m. on Saturday. When you arrive in Rio de Janiero, the local time is 3:15 a.m. on Saturday. How long was your flight?
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2 months ago
Dr. Hadden wants to conduct a study that will allow him to make claims that apply to all college students. Which of the following validities is he prioritizing? a. the statistical validity of the study b. the internal validity of the study c. the construct validity of the study d. the external validity of the study
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2 months ago
Complete the statement. Round to the nearest hundredth, if necessary.
General
2 months ago
I WILL AWARD BRAINLIEST!! PLEASE HELP ME!!A line segment BK is an angle bisector of ΔABC. A line KM intersects side BC such, that BM = MK. Prove: KM ∥ AB . m∠MBK≅m∠______, by reason_________
General
2 months ago
if the angle formed by the bisector of the vertex angle of an isosceles triangle equals 50 degrees, find a base angle
General
2 months ago
You roll a number cube. What are the odds that you will roll an even number?
General
2 months ago
A gondola (cable car) at a ski area holds 50 people. Its maximum safe load is 10000 pounds. A populationof skiers has a distribution of weights with mean 190 pounds and standard deviation 40 pounds. If 50 skiersare randomly chosen from this population, and take the gondola, what is the probability its maximum safeload will be exceeded? (Hint: This question is about a sum, but a sum ofnitems is their mean timesn, sothis question can be understood as a question about a mean.)
General
2 months ago
Find the (linear) equation of the tangent plane to the surface z=5y2−3x2+x at the point (2,−1,−5). Your answer should be in the form of an equation, e.g., something like ????x+????y+cz=???? or ????(x−x0)+????(y−y0)+c(z−z0)=0 would work.
General
2 months ago
Consider the experiment where a pair of fair dice is thrown. Let X denote the random variable whose value is determined by multiplying the number of spots showing on the one die by the number of spots showing on the other. The range of values that X can assume are the positive integers {1,2,3,4,5,6,8,9,10,12,15,16,18,20,24,25,30,36}. Please give the corresponding probabilities for the values of X given below.
General
2 months ago
Mario's charges $4 for 65 ounces of soda and Mike's charges $2.50 for 34 ounces of soda.Jayda only has $3 and wants to get as much soda as possible.Which store should she go to? How much more soda will she get for $3?
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2 months ago
Help please.The equation represents function A, and the graph represents function B.Function A:F(x) = -2x + 1Function B:Which equation best compares the slope of the two functions?1. Slope of function B =2x slope of function A2. Slope of function A = slope of function B3. Slope of function A= 2x slope of function B4. Slope of function B = -slope of function A
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2 months ago
Can someone help me with these problems? The majority of them I have answers but I don't understand them. Thanks!What is the area of the triangle with a base of 5 1/2 cm and a height of 3 1/2 cm? My answer - 11 1/2919÷ 2Round to the nearest wholeMy answer-?What is the area of a parallelogram with a base of 14.5 m and a height of 21 m?The cafeteria sold 200 grilled cheese sandwiches, 100 tacos, and 150 grilled chicken salads. What is the ratio in simplest terms of grilled chicken salads sold to the total number of lunches sold?My Answer- 1:3What is the ratio of odd to even digits in the following number: 7,208,631My Answer- 3:4Given that one ton is equal to 2000 pounds, what is 5 tons? My Answer- 400 or 1000A table measures 3 feet across. How many inches is this? My Answer-36
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2 months ago
The captain of a boat knows that a lighthouse on the coast is 100 ftaway. If she measures the angle from the boat looking up to the topof the light house to be 2º and she is 4 feet above the water when shetakes this measurement, how tall is the light house?
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2 months ago
Brandon mows his lawn once every 4 days. Thomas mows his lawn once every 3 days. Celena mows her lawn once every 6 days. If they are all mowing the lawn today, in how many days will they be mowing their lawns together again?
General
2 months ago
Two different box-filling machines are used to fill cereal boxes on an assembly line. The critical measurement influenced by these machines is the weight of the product in the boxes. Engineers are quite certain that the variance of the weight of product is σ2=1 ounce. Experiments are conducted using both machines with sample sizes of 36 each. The sample averages for machines A and B are x¯¯¯A=4.5 ounces and x¯¯¯B=4.7 ounces. Engineers are surprised that the two sample averages for the filling machines are so different. (a) Use the Central Limit Theorem to determine P(X^B−X^A≥0.2) under the condition that μA=μB. (b) Do the aforementioned experiments seem to, in any way, strongly support a conjecture that the population means for the two machines are different? Explain using your answer in (a).
General
2 months ago
The number of winter storms in a good year is a Poisson random variable with mean 3, whereas the number in a bad year is a Poisson random variable with mean 5. If next year will be a good year with probability .4 or a bad year with probability .6, find the expected value and variance of the number of storms that will occur.
General
2 months ago
If after 5 years, 25 of the 1,000 people registered with Bracken have gone through surgery, where does Bracken stand in terms of gains or losses? A. $41,100 B. $39,700 C. −$36,600 D. −$37,500 E. −$43,000
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2 months ago
All of the girls are Danielle's cabin at camp are the same age. Their counselor is 3 times their age. Danielle's age and her counselor's ages at up to 28. Write an equation that can be used to find the ages of Danielle and her counselor.
General
2 months ago
if the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system?OnThe lines in a system cannot be parallel.OB.There is no solution.Oc.There is exactly one solution.OD.There are infinitely many solutions.
General
2 months ago
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