Answer:
4
Step-by-step explanation:
28 divided by 7=4
With 21 marbles in the bag, and 9 of them green, her chances are 9/21 that she will pull a green marble. If you reduce 9/21 you get 3/7 which is the way the answer should be expressed (in lowest terms)
Answer Probability of green = 3/7
Answer:
D
Step-by-step explanation:
Consider the equation:

Use distributive property in both sides:

Separate terms with x into the left part and terms without x into the right part:

Since you get true equality 0 = 0, the equation is true for all real values of x. So, the equation has infinitely many solutions.
Answer:
See below.
Step-by-step explanation:
2b + 8 − 5b + 3 = −13 + 8b − 5
Reorder like terms.
2b-5b+8+3=8b-13-5
Combine those like terms. Then solve.
-3b+11=8b-18
-11 -11
-3b=8b-29
-8b -8b
-11b=-29
/-11 /-11
b=2.64
-hope it helps