From my research, the available data in the problem is as follows:
<span>No. of Heads | Probability
0 1/16
1 4/16
2 6/16
3 4/16
4 1/16
To calculate the average amount spent by a student in an hour:
[(0 * 1/16) + (1 * 4/16) + (2 * 6/16) + (3 * 4/16) + (4 * 1/16)] * 2
= 4
Therefore, the library earns $4 per student each hour</span>
Answer: -14a - 8
Step-by-step explanation:
so basically... idek
[|] Answer [|]
[|] Explanation [|]
3x + 5 = 23
_________
_________
Subtract 5 From Both Sides:
3x + 5 - 5 = 23 - 5
Simplify:
3x = 18
Divide Both Sides By 3:
Simplify:
X = 6
_________
_________
- Check Your Work -
Substitute 6 For X:
3 * 6 + 5 = 23
Parenthesis
Exponents
Multiply
Divide
Add
Subtract
3 * 6 = 18
18 + 5 = 23
L= length
W= width= 9 yards
Perimeter= 72 yards
Plug in the numbers you know and solve for L.
Perimeter= 2L + 2W
72= 2L + 2(9)
72= 2L + 18
subtract 18 from both sides
54= 2L
divide both sides by 2
27= L
CHECK:
72= 2(27) + 2(9)
72= 54 + 18
72= 72
ANSWER: The length is 27 yards
Hope this helps! :)
Don't know about the TV problem, sorry.
For the next one (Dylan) = 14.1 inches
Use the Pythagorean Theorem a^2+b^2 = c^2
10^2 + 10^2 = c^2
100 + 100 = c^2
200 = c^2
Take the square root of both sides. The hypotenuse is equal to the square root of 200, which is 14.1 when rounded to the nearest tenth of an inch.
Hope this helps