Answer:
Answer is after 20 miles
Step-by-step explanation:
10 +2.5x = 3x
10 = 3x-2.5x
10=0.5x
10/.5=x
x=20
At 20 miles they both have a cost of 60
Answer:
Step-by-step explanation:
Let X = amount you can win at this game (# of dollars you can win)
x = (0, -2, 6, 10, 15)
- P(X=0) = P(probability of picking a diamond) = 13/52 = .25
- P(X=-2) = P(probability of picking a heart) = 13/52 = .25
- P (X= 6) = P(probability of picking a spade) = 13/52 = .25
- P(X=10) = P(probability of picking a club) = 12/52 ≈ .231
- P(X=20) = P(probability of picking the ace of clubs) = 1/52 ≈ .019
Probability Distribution of X
x p(X = x) Decimal
0 13/52 0.25
-2 13/52 0.25
6 13/52 0.25
10 12/52 0.231
15 1/52 0.019
Total 52/52 1.00
1.) Adrianna has 10 pieces of gum.
2.) She now buys 3 MORE pieces of gum.
3.) 10 (original amount) + 3 (amount bought) = 13 pieces of gum
4.) Adrianna now has 13 pieces of gum to share with her friends.
Answer:
1 and 4
Step-by-step explanation:
it's a counterexample since the product, 4 is less than the sum, 5, proving the conjecture false.
First, expand the brackets on the left hand side.
You have: 8x-6=4x-78
Minus least number of x first on each side, so minus 4x
2x-6=-78
Then add 6 to both sides
2x= -72
Then divide both sides by 2 to get x on its own
X= -36
(-72/2=-36)
