Examine the two-way frequency table below.Score: 90-100 Score: 70-89 Score: 0-69
Math Test 20 40 7
Science Test 15 35 5
Which percentage of students took the math test and received a grade of 90 or above?
16.39%
29.85%
57.14%
28.69%
Let event A = "math test" and event B = "Score: 90-100." Then find , where
Answers
To find the percentage of students who took the math test and received a grade of 90 or above, we need to calculate the conditional probability P(A ∩ B), which is the probability of event A ("math test") and event B ("Score: 90-100") happening simultaneously.
From the two-way frequency table:
The number of students who took the math test and received a grade of 90 or above is 20.
The total number of students who took the math test is 20 + 40 + 7 = 67.
Now, we can calculate the conditional probability:
P(A ∩ B) = (Number of students who took the math test and received a grade of 90 or above) / (Total number of students who took the math test) × 100%
P(A ∩ B) = 20 / 67 × 100% ≈ 29.85%
So, the percentage of students who took the math test and received a grade of 90 or above is approximately 29.85%.
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Answer:
The decrease is exponential.
Step-by-step explanation:
An exponential decrease is something like:
f(x) = A*(r)^x with 0 < r < 1
A linear decrease is something like:
g(x) = -a*x + b with a > 0
First ai general formula.
If you have a quantity Q, decreased by an X%, the new quantity will be:
New Quantity = Q - Q*(X%/100%)
Now let's look at the question:
Suppose that the original price of the computer component is K
And the price as a function of the year is P(y)
Then we know that, in the year zero, the price is K.
P(0) = K
One year after, the price decreases by 2.25%
Then:
P(1) = K - K*(2.25%/100%) = K*(1 - 0.0225)
After another year, we will have another decrease of 2.25%
Then:
P(2) = K*(1 - 0.0225) - K*(1 - 0.0225)*(2.25%/100%)
P(2) = K*(1 - 0.0225)*(1 - 0.0225) = K*(1 - 0.0225)^2
We already can see the pattern, we can expect that in the year y, the price of the component will be:
P(y) = K*(1 - 0.0225)^y
This clearly is an exponential decrease.
Answers
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60
Step-by-step explanation:
we know that it is less then 90 degrees so it can't be 110 and 70 degrees would be more extended from the horizontal line
Answer:
70°is your ans
Step-by-step explanation:
110+x=180° {being alternate interior angle}
x=180-110
x=70°
Answers
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Answer:
it is A
Step-by-step explanation:
Answers
Answer: The area of the kite is 15.9 sq. ft.
Step-by-step explanation: Given that a kite has diagonals of lengths 5.3 ft and 6 ft.
We are to find the area of the kite.
We know that the area of a kite having diagonals of length 'p' units and 'q' units is
Here, p = 5.3 ft and q = 6 ft.
Therefore, the area of the kite will be
Thus, the correct option is (B) 15.9 sq. ft.
A=(1/2)ab where a is one diagonal and b is the other
A=(1/2)(5.3)(6)
A=(3)(5.3)
A=15.9
B is answer
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Step-by-step explanation:
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Step-by-step explanation: