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MATH SOLVE
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A chemist is using 357 milliliters of a solution of acid and water. If 13.2 % of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth.
General
7 months ago
The seventh grade class supplied bags of snacks and beverages for the school dance They supplied19 more beverages than bags of snacks The dance was supplied with a total of 371 items.
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7 months ago
Select all that apply.
General
7 months ago
A board game allows players to trade and sell game pieces of equal value. Player 1 traded three cars plus $100 for a house. Player 2 sold two houses and a car for $2300. How much is a car worth?
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7 months ago
The age of an ancient tree trunk is estimated using radiocarbon dating. If the trunk has a C-14 decay rate that is 34% of what it is in living plants, how old is the trunk? The half-life of C-14 is 5730 years.
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7 months ago
Weatherwise is a magazine published by the American Meteorological Society. One issue gives a rating system used to classify Nor'easter storms that frequently hit New England and can cause much damage near the ocean. A severe storm has an average peak wave height of ? = 16.4 feet for waves hitting the shore. Suppose that a Nor'easter is in progress at the severe storm class rating. Peak wave heights are usually measured from land (using binoculars) off fixed cement piers. Suppose that a reading of 34 waves showed an average wave height of x = 17.3 feet. Previous studies of severe storms indicate that ? = 3.5 feet. Does this information suggest that the storm is (perhaps temporarily) increasing above the severe rating? Use ? = 0.01.(a) What is the level of significance?1What is the value of the sample test statistic? (Round your answer to two decimal places.)
General
7 months ago
The sum of the ages of Berma, her mother Rinna and her father Erwin is 80. Two years from now, Rinna’s age will be 13 less than the sum of Erwin’s age and twice Berma’s age. Three years ago, 15 times Berma’s age was 5 less than the age of Rinna. How old are they now?
General
7 months ago
Select all statements that are true about the linear equation.y= 1/3x + 2The graph of the equation is a single point representing one solution to the equation.The point (9,5) is on the graph of the equation.The graph of the equation is the set of all points that are solutions to the equation.The point (-3,-1) is on the graph of the equation.
General
7 months ago
Ace Hardware sells boxes of wrench (100) and hammers ($300). Howard ordered 40 boxes of wrenches and hammers for $8400. How many boxes of each are in the order?
General
7 months ago
HELP ME YOU MUST EXPLAIN THE ANSWER
General
7 months ago
What would be equivalent to (-7 x +8x + 19 y) - (6 y + 8 - 20 x - 16 y)
General
7 months ago
Listed below are the lead concentrations in mug/g measured in different traditional medicines. Use a 0.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 17 mug/g. 13 21 3.5 18.5 21.5 8.5 15.5 19 9 5.5
General
7 months ago
Find an equation of the line that passes through the point (-1, 7) and is parallel to the line passing through the points (-3, -4) and (1, 4). (Let x be the independent variable and y be the dependent variable.)
General
7 months ago
A student dance committee is to be formed consisting of 2 boys and 4 girls. If the membership is to be chosen from 5 boys and 6 girls, how many different committees are possible?
General
7 months ago
5CHALLENGE Mr. Kelly bought 8 dozen hot dogs for the third grade picnic. His petdog broke into the groceries and ate 14 hot dogs. If each picnic guest eats one hotdog, how many people can still have a hot dog? Show your work.
General
7 months ago
In the United States, the ages 11 to 55+ of smartphone users approximately follow a normal distribution with an approximate mean of 34.8 years and a standard deviation of 14.1 years. Determine the probability that a randomly selected smartphone users in the age range 11 to 55+ is between 30 and 54 years old.
General
7 months ago
Suppose are running a study/poll about the proportion of voters who prefer Candidate A. You randomly sample 86 people and find that 59 of them match the condition you are testing. Suppose you are have the following null and alternative hypotheses for a test you are running: H0:p=0.68H0:p=0.68 Ha:p<0.68Ha:p<0.68 Calculate the test statistic, rounded to 3 decimal places
General
7 months ago
What is the solution to the linear equation?d – 10 – 2d + 7 = 8 + d – 10 – 3dd = –5d = –1d = 1d = 5
General
7 months ago
The two representative points for the first half of a data in a data set are (1,10) and (8,2). Create a data set with at least eight points that fits these representative points and find the line of best fit for the data.
General
7 months ago
24/2=_/3=_/5.5=108/_=_/15
General
7 months ago
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