That number would be -3.
For the purpose of solving this, let that number be x. Now write out the front side of the equation:
2x (twice a number) - 5 (five less than)
2x - 5
Now write out the other side
1/2 (one half of) (3x - 13) (The difference of 3 times the number and 13)
1/2(3x - 13)
Now set the two sides equal to each other and solve
2x - 5 = 1/2(3x - 13) ----> multiply both sides by 2
4x - 10 = 3x - 13 ----> subtract 3x from both sides
x - 10 = -13 -----> add 10 to both sides
x = -3
Answer:
120 different meals.
Step-by-step explanation:
Start with the entrees: There are 4
There are side dishes : 4
Drinks: 5
The side dishes can be 4!/(2!2!) (order does not matter here). There are 6 ways.
The entrees are 1 of 4: 4
And 5 drinks
P(dinner) = 5 * 4 * 6 = 120
Let cases of Lyme disease = x
x = 2, 1, 3, 4, 5, 1, 2, 1, 6, 5, 4, 1
y = 0, 1, 2, 1, 3, 5, 2, 3, 3, 3, 1, 0
b) Linear correlation between Lyme disease and drowning deaths.
r = -15/ √(24*36.92)
r = -0.504
I believe this could happen 27 different ways.