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An anthropologist finds that a prehistoric bone contains less than 8.1% of the amount of Carbon-14 the bones would have contained when the person was alive. How long ago did the person die? (The constant for Carbon-14 is 0.00012.)19,000 years20,944 years21,048 years23,028 years
General
2 months ago
(HELP ASAP PLEASE)The postal service offers flat-rate shipping for priority mail in special boxes. Today, Anna shipped 10 small boxes and 6 medium boxes, which cost her $126 to ship. Meanwhile, Jeffrey shipped 5 small boxes and 6 medium boxes, and paid $96. How much does it cost to ship these two sizes of box?Shipping costs $___ for a small box and $___ for a medium box.
General
2 months ago
Point C(3.6, -0.4) divides in the ratio 3 : 2. If the coordinates of A are (-6, 5), the coordinates of point B are . If point D divides in the ratio 4 : 5, the coordinates of point D are .Reset Next
General
2 months ago
Please solve a through g
General
2 months ago
What values for theta (0≤theta≤2π) cos theta- tan theta cos theta=0?
General
2 months ago
Solve the Equation 4x+3y=183x+4y=3
General
2 months ago
Solve the Equation 3x+2y=17-2x-y=-12
General
2 months ago
Solve the Equation 5x+15y=105x-10y=-40
General
2 months ago
There are 101 athletes at a highschool. 53 of them play football, 24 play basketball, and 31 play neither sport. Find the probability of: P(Football and basketball)
General
2 months ago
Solve The Equation 4x×9y=74x-9y=9
General
2 months ago
If the area of square 1 is 250 units squared, and the area of square 3 is 120 units squared, what is the area if square 2? Explain your reasoning.
General
2 months ago
A simplified model of the human blood-type system has four blood types: A, B, AB, and O. There are two antigens, anti-A and anti-B, that react with a person’s blood in different ways depending on the blood type. AntiA reacts with blood types A and AB, but not with B and O. Anti-B reacts with blood types B and AB, but not with A and O. Suppose that a person’s blood is sampled and tested with the two antigens. Let A be the event that the blood reacts with anti-A, and let B be the event that it reacts with anti-B. Classify the person’s blood type using the events A, B, and their complements.
General
2 months ago
I am stumped on Question 2
General
2 months ago
A machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks produced is well approximated by a normal distribution with mean 4 cm and standard deviation 0.2 cm. The specifications call for corks with diameters between 3.8 and 4.2 cm. A cork not meeting the specifications is considered defective. (A cork that is too small leaks and causes the wine to deteriorate; a cork that is too large doesn't fit in the bottle.) What proportion of corks produced by this machine are defective? (Round the answer to four decimal places.)
General
2 months ago
a line passes through the point(-4,-6) and has a slope of 1/2 What is theequation of the line?
General
2 months ago
What is the product 7,000 x 50 written as the product of a whole number and a power of 10 ?
General
2 months ago
Two savings accounts were each opened with a $7,000 deposit. Account A earns simple interest at a 1% annual interest rate. Account B earns compound interest at a 1% annual interest rate compounded yearly. No other deposits or withdrawals are made from the accounts for 3 years.What is the difference in interest earnings between the two accounts after 3 years?A) Both accounts will earn the same amount of interest.B) Account A will earn approximately $2 more in interest than account B.C) Account A will earn approximately $210 more in interest than account B.D) Account A will earn approximately $2 less in interest than account B.E) Account A will earn approximately $210 less in interest than account B.
General
2 months ago
A realty company looks at a recent sample of houses that have sold On testing the nul hypothesis that 57% of the houses take more than three months to sell against the hypothesis that more than 57% of the houses take more than three months to sell, they find a P value of 0.026 which conclusion is appropriate? Explain. Choose the correct answer below. A. If 57% of the houses take more than three months to sell, there is a 2 6% chance that a random sample proportion would be as high as or higher than the one they obtained B. There is a 26% chance that 57% of the houses take more than 3 months to sell C. There is a 97 4% chance that 57% of the houses take more than 3 months to sell D. There is a 26% chance that the null hypothesis is correct
General
2 months ago
The mass of Earth's moon is about 7 x 10 to the 22 power kilograms. The mass of Jupiter is about 1.89 x 10 to the 27 power kilograms The mass of Jupiter is about how many times the mass of Earth's moon?
General
2 months ago
A pair of parallel lines is cut by a transversal, as shown: A pair of parallel lines is shown cut by a transversal. Angle A is located in the upper left exterior next to the transversal, and angle B is located in the bottom right exterior corner of the transversal. Which of the following best represents the relationship between angles A and B? A = B A = 180 degrees − B B = 180 degrees − A A = 2B
General
2 months ago
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