Answer:
Last year’s price = $2.96
Step-by-step explanation:
Given:
Current price of gasoline = $3.40
Higher rate = 15%
Find:
Last year’s price
Computation:
Last year’s price = Current price of gasoline [100 / (100 + 15)]
Last year’s price = Current price of gasoline [100 / (115)]
Last year’s price = $3.40 [100 / (115)]
Last year’s price = 2.95652
Last year’s price = $2.96
Answer:
Domain: (-∞,∞)
Range: (5,∞)
Step-by-step explanation:
Answer:
0.2983
Step-by-step explanation:
Let X be the reading on thermometer. Given that X is N(0,1)
We are to find the probability that a randomly selected thermometer reads between negative 0.12 and 1.02
Reqd probability = 
.
Since this x is already normal std variable x=z
i.e. reqd prob = 
Hence answer is 0.2983
Answer: 50.24
Step-by-step explanation:
To find the circle's area, you need to first identify what the radius is by using the circumference formula (C = 2πr). Remember that the circumference is π times the diameter of the circle or 2 times the radius.
25.12 = 2 (3.14) (r) .
25.12 = 6.28r Multiply 2 and 3.14 together
4 = r Divide both sides by 6.28
Now that you know the radius, you can now determine the circle's area. This can be found by using the area formula which is A = πr². You would need to change π to 3.14, so the formula you need to use for this specific problem is A = 3.14 · r².
A = (3.14) r²
A = (3.14) (4)²
A = (3.14)(16)
A = 50.24
It takes 45 seconds. the easiest way to do these is to use a graphic calculator and replace the variables with x and y, for example, this equation would become -5x^2+30x, and if you don't have access to a graphing calculator, you can always use desmos online.
