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3 years ago

PLEASE help really quick! (; Math problem.

Mathematics

1 answer:

Rufina [12.5K]3 years ago

6 0

Always remember rise over run, used to see what slopes are. In this case, rise over run would be -3/2, because the line is negative.

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Solve using the quadratic formula. Approximate answers to the nearest tenth.

Thepotemich [5.8K]

Answer:

$\displaystyle x = 2, \ 3$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $\displaystyle x = \frac{-b \pm \sqrt{b^2-4ac}}{2a}$

Step-by-step explanation:

Step 1: Define

Identify variables

x² - 5x + 6

↓

a = 1, b = -5, c = 6

Step 2: Solve for x

Substitute in variables [Quadratic Formula]: $\displaystyle x = \frac{5 \pm \sqrt{(-5)^2-4(1)(6)}}{2(1)}$
[√Radical] Evaluate exponents: $\displaystyle x = \frac{5 \pm \sqrt{25-4(1)(6)}}{2(1)}$
[√Radical] Multiply: $\displaystyle x = \frac{5 \pm \sqrt{25-24}}{2(1)}$
[√Radical] Subtract: $\displaystyle x = \frac{5 \pm \sqrt{1}}{2(1)}$
[√Radical] Evaluate: $\displaystyle x = \frac{5 \pm 1}{2(1)}$
Multiply: $\displaystyle x = \frac{5 \pm 1}{2}$
Add/Subtract: $\displaystyle x = \frac{4}{2}, \ \frac{6}{2}$
Divide: $\displaystyle x = 2, \ 3$

6 0

3 years ago

Kelly wants to buy a magazine that is $25. Later the magazine was marked up an additional 20%. What is the new price

oksian1 [2.3K]

$30 because 25/20 =5 which means for every 20% percent 5 will be added

5 0

3 years ago

How would you change 192 liters to kilograms?

Archy [21]

First you need to know the weight in Kilograms of one liter of the substance. Then you multiply that number by 192. For example, water weighs 1 kg per liter. This is an easy conversion, with 192 liters of water weighing 192 kilograms. The weight varies by substance, though, so you need to look up how much what you want weighs.

3 0

4 years ago

Plair wants to save $100. so far she has saved $ 63. how much more does plair need to save ?

Novay_Z [31]

Hello!

To find out how much more she needs to save, simply subtract 63 from 100:

100-63=37.

I hope it helps!

7 0

3 years ago

Use the figure and follow the directions below.

Advocard [28]

F is the vertex of 1

7 0

3 years ago