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3 years ago

Toss three fair coins and let x equal the number of heads observed

1 answer:

5 0

Let x=chances of receiving heads Since there is 50% or 1/2 chance of getting heads and 1/2 of getting tails. 100·1/2·1/2·1/2=12.5% chance

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Please help asap im confused

docker41 [41]

The answer to this is G

5 0

3 years ago

Write the equation of the line that passes through (0,-4) and is perpendicular to the line described by the equation y=-3x+5

s344n2d4d5 [400]

Answer:

make the y int -4 because it passes through (0,-4). to make perpendicular, apply same slope to new equation but change sign

equation:

3x -4

6 0

3 years ago

What is the length of side a? Round to the nearest tenth of an inch. Enter your answer in the box.

Wittaler [7]

9514 1404 393

Answer:

14.4

Step-by-step explanation:

The Pythagorean theorem tells you ...

7² +a² = 16²

a² = 256 -49

a = √207

a ≈ 14.4

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3 years ago

Surface area of cylinder with 3in and 2in

Alla [95]

Which ones the height and which is the radius?

4 0

3 years ago

Solve this system by substitution. y = 3 y = -3x + 6 *Remember to write your answer as a coordinate point (x, y). I

DochEvi [55]

Answer:

(1, 3)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Algebra I

Coordinates (x, y)
Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 3

y = -3x + 6

Step 2: Solve for x

Substitute in y: 3 = -3x + 6
[Subtraction Property of Equality] Subtract 6 on both sides: -3 = -3x
[Division Property of Equality] Divide -3 on both sides: 1 = x
Rewrite/Rearrange: x = 1

Step 3: Solve for y

Define original equation: y = -3(1) + 6
Multiply: y = -3 + 6
Add: y = 3

6 0

3 years ago