Answer:
y = 1/3x+6
Step-by-step explanation:
Step 1
- Rewrite f(x) as y
f(x) = 3x-18 => y = 3x-18
Step 2
- Swap x and y
y = 3x-18 => x = 3y-18
Step 3
- Slove for y (By that it means isolate y)
x = 3y-18 (+18 both sides)
x+18 = 3y (Then divide both sides by 3)
1/3x+6 = y
Final Answer:
y = 1/3x+6
2.3, –2.3
B.
5.4, –5.4
C.
7, –7
D.
21, –21
Answer:
She bought 23
Step-by-step explanation
Divide $8.80 by 8 take that and multiply it by 23 and you get $25.30
5% tax on $20 is $
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
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%.