Answer:
14
Step-by-step explanation:
10 questions = 4 correct + 6 incorrect
4 correct = 4* 5 = 20
6 incorrect = 6* (-1) = -6
His score is 20 -6 = 14 points
₇P₅ is a permutation. you can find this setting in the statistics menu of your scientific calculator (i think).
If you don't have a scientific calculator, you can use the following formula:
nPr = 
₇P₅ = 
= 
= 
= 7 * 6 * 5 * 4 * 3
= 2520
Answer: C
Answer:
38.5
Step-by-step explanation:
Lets say, first number = x
Second number = 3x+7
Total = 49
(x)+(3x+7)= 49
4x+7 = 49
4x = 42
x = 42/4
x= 10.5
x= 10.5
3x+7 = 3(10.5)+7 = 38.5
Hope this helps!!
Answer:
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Answer:
The answer to your question is 10 in
Step-by-step explanation:
Data
Circumference = 20π in
Radius = x
Formula
Circumference = πd
Process
1.- Equal the formula to the circumference
πd = 20π
2.- Solve for d
d = 20π / π
3.- Simplification
d = 20
4.- Find the radius
r = d/2
r = 20/2
r = 10 in
