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3 years ago

The Quadratic Formula gives which roots for the equation 2x2 + 7x = -2?

Mathematics

1 answer:

olya-2409 [2.1K]3 years ago

7 0

Answer:

B. (-7 +/-√33) / 4

Step-by-step explanation:

2x2 + 7x + 2 = 0

x = [-7 +/- √(7^2 - 4*2*2)] / 2*2

x = -7/4 +/- √(33) / 4

= (-7 +/-√33) / 4

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I need the ordered pair plz

Taya2010 [7]

Answer:

$(\frac{-1}{2},-1)$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
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Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Midpoint Formula: $(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (-6, 5)

Point (5, -7)

Step 2: Find Midpoint

Simply plug in your coordinates into the midpoint formula to find midpoint

Substitute [MF]: $(\frac{-6+5}{2},\frac{5-7}{2})$
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3 years ago

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pochemuha

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3 years ago

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a company wants to design a cylindrical object that has a height of 10 centimeters and a volume of at least 2,000 cubic centimet

AveGali [126]

Answer:

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3 years ago

A used-droid dealership buys a droid for $2900 and then sells it for $4300. What is the percent increase?

Anna71 [15]

The percent increase is 48.28

Step-by-step explanation:

Given,

Purchase price of used-droid = $2900

Selling price of used=droid = $4300

Profit = Selling price - purchase price

Profit = 4300-2900 = $1400

Percent increase = $\frac{Profit}{Purchase\ price}*100$

$Percent\ increase=\frac{1400}{2900}*100\\\\Percent\ increase=\frac{140000}{2900}\\\\Percent\ increase=48.275\%$

Rounding off to nearest hundredth;

Percent increase = 48.28%

The percent increase is 48.28

Keywords: percentage, subtraction

Learn more about percentages at:

#LearnwithBrainly

8 0

3 years ago

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vfiekz [6]

Step-by-step explanation:

I think the answer is:

A. y=-3+2x

D. y=5x-4

Hope it helps

6 0

3 years ago