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3 years ago

Which of the following is correct?

Mathematics

2 answers:

Natali5045456 [20]3 years ago

7 0

The secomd and third one

IgorC [24]3 years ago

7 0

Second & 3rd hope this helped

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3 years ago

Help please what is 3/4×5/7 =

vesna_86 [32]

Answer:

15/28 simplified to 5/8 (credit to other answer.)

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3 years ago

What is the slope of the line that passes through the points (9, 5) and (21, 1)?

AleksandrR [38]

Answer:

$\displaystyle m = \frac{-1}{3}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (9, 5)

Point (21, 1)

Step 2: Solve for slope m

Substitute in points [Slope Formula]: $\displaystyle m = \frac{1-5}{21-9}$
[Fraction] Subtract: $\displaystyle m = \frac{-4}{12}$
[Fraction] Simplify: $\displaystyle m = \frac{-1}{3}$

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4 years ago