Answer:
a + d = xy
Step-by-step explanation:
Answer: You have a better chance if you do not replace the red marble.
Step-by-step explanation:
The bag has:
5 red marbles
8 blue marbles
4 yellow marbles
3 green marbles
A total of 5 + 8 + 4 + 3 = 20
You want to draw a red marble and then a blue marble.
The probability of drawing a red marble in your first attempt is the number of red marbles divided the total number of marbles:
P1 = 5/20
now you want to draw a blue marble.
If you replace the red marble, you have 20 marbles again in the bag, then the probability of drawing a blue marble is:
P2 = 8/20
The joint probability is P = P1*P2 = (5/20)*(8/20) = 0.1
If you do not replace the red marble, you have 19 total marbles in the bag, then the probability of taking a blue marble is:
P2 = 8/19
The joint probability is:
P = P1*P2 = (5/20)*(8/19) = 0.105
The probability is slightly bigger if you do not replace the red marble.
9514 1404 393
Answer:
98 cm
Step-by-step explanation:
Area is the product of length and width. Fill in the given numbers in the formula and solve for length:
A = LW
8428 cm² = (86 cm)L
L = 8428 cm²/(86 cm) = 98 cm . . . . . divide both sides by 86 cm
The length of the painting is 98 cm.
Answer:
a = 5
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality
Terms/Coefficients
Coordinate Planes
- Coordinates (x, y)
- Equations
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify.</em>
9x - 5y = -9
(a - 1, 9)
<u>Step 2: Solve for </u><em><u>a</u></em>
- Substitute in coordinate [Equation]: 9(a - 1) - 5(9) = -9
- Evaluate [Order of Operations]: 9(a - 1) - 45 = -9
- [Addition Property of Equality] Add 45 on both sides: 9(a - 1) = 36
- [Division Property of Equality] Divide 9 on both sides: a - 1 = 4
- [Addition Property of Equality] Add 1 on both sides: a = 5