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Svetllana [295]
3 years ago
6

According to Webster’s New Collegiate Dictionary, a divining rod is "a forked rod believed to indicate [divine] the presence of

water or minerals by dipping downward when held over a vein." To test the claims of a divining rod expert, skeptics bury four cans in the ground, two empty and two filled with water. The expert is led to the four cans and told that two contain water. He uses the divining rod to test each of the four cans and decide which two contain water. a List the sample space for this experiment. b If the divining rod is completely useless for locating water, what is the probability that the expert will correctly identify (by guessing) both of the cans containing water?
Mathematics
1 answer:
drek231 [11]3 years ago
6 0

Answer:

1/6

Step-by-step explanation:

Let E1 and E2 represent the empty cans and W1 and W2 be the cans filled with water.  

S = { E1E2, E1W2,E2W2, E1W1, E2W1, W1W2 }  

By merely guessing, the events are equally likely. Since there are 6 possible outcomes,  

probability = 1/6

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Select the correct answer.
Aloiza [94]

Answer:

C) x=\frac{\log(6)}{2\log(3)}

Step-by-step explanation:

15(3)^{2x}=90\\\\3^{2x}=6\\\\2x=\log_3(6)\\\\2x=\frac{\log(6)}{\log(3)}\\\\x=\frac{\log(6)}{2\log(3)}

Remember to use the change of base formula, which states that \log_a(b)=\frac{\log(b)}{\log(a)} so that everything has the same base of 10

5 0
3 years ago
What parent function has the following applications: profit, gravity, and calculating area?
Ronch [10]

Answer:

Suppose that you have a square of side length x, the area of this square will be:

A = x^2.

Now, by dynamics, we know that the position of an object that is falling down from a height H, can be written as:

H(t) = (-g/2)*t^2 + H.

We can see a pattern, x^2 is used in both.

Now, profit can be also modeled with quadratic equations, where our objective is to find the maximum of the quadratic (so we can have the maximum profit)

Then the parent function that is useful for gravity, calculating area and profit is the quadratic function:

f(x) = x^2

3 0
3 years ago
PLEASE HELP ME I AM RUNNING OUT OF TIME. I WILL MARK BRIANLYEST AND I AM GIVEING 20 POINTS AWAY!!!
d1i1m1o1n [39]

Answer:

115 million

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Stacy buys a bagel assortment that has 6 oat bagels for every 2 blueberry bagels. Naomi buys a bagel assortment that has 9 oat b
sdas [7]

Answer: Stacy: 30 Naomi: 18

Step-by-step explanation:

Stacy- ratio of oat to blueberry is 6:2 we want to find x:10

10 is 5 times 2, and whatever you do to the bottom you have to do to the top, and 6 times 5 is 30


Naomi- ratio of oat to blueberry is 9:5 we want to find x:10

The 10 is 2 times 5, and whatever you do to the bottom you have to do to the top, and 9 times 2 is 18

3 0
2 years ago
I'm so confused please help!<br><br> 6y=8-9+6y
finlep [7]
Simplifying
6y = 8 + -9 + 6y

Combine like terms: 8 + -9 = -1
6y = -1 + 6y

Add '-6y' to each side of the equation.
6y + -6y = -1 + 6y + -6y

Combine like terms: 6y + -6y = 0
0 = -1 + 6y + -6y

Combine like terms: 6y + -6y = 0
0 = -1 + 0
0 = -1

Solving
0 = -1

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.
6 0
3 years ago
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