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3 years ago

two movie theaters each surveyed 21 customers to determine their ages the table shows a summary of the results

Mathematics

1 answer:

Anon25 [30]3 years ago

8 0

Answer:

narrower

SD is greater

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Find all complex solutions of 2x^2+3x+5=0 using the quadratic equation.

katrin2010 [14]

2x^2 + 3x + 5 = 0
a = 2 b = 3 and c = 5
x = [-b +-sq root(b^2 -4ac)] / 2a
x = [-3 +-sq root(9 -4*2*5)] / 4
x = [-3 +-sq root(9 - 40)] / 4
x = -(3 / 4) + sq root (-36) / 4
x = -(3 / 4) - sq root (-36) / 4

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3 years ago

What is the equation in slope-intercept form of the line

asambeis [7]

Answer:

give me one minute

Step-by-step explanation:

ok so you use a graph 1 second

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3 years ago

The depth of a swimming pool is 8.5 meters. What is half of the depth in mm

vampirchik [111]

8.5 meters in half is 4.25 meters which is 4250 milimeters =D

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3 years ago

Read 2 more answers

Solve 2x2 + 4x = 30 using the Quadratic Formula.

Maslowich

Answer:

$x=-5, 3$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

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

Step-by-step explanation:

Step 1: Define equation

2x² + 4x = 30

Step 2: Rewrite into Standard Form

2x² + 4x - 30 = 0

Step 3: Define variables

a = 2

b = 4

c = -30

Step 4: Solve for x

Substitute: $x=\frac{-4\pm\sqrt{4^2-4(2)(-30)} }{2(2)}$
Evaluate: $x=\frac{-4\pm\sqrt{16-4(2)(-30)} }{2(2)}$
Multiply: $x=\frac{-4\pm\sqrt{16+240} }4}$
Add: $x=\frac{-4\pm\sqrt{256} }4}$
Evaluate: $x=\frac{-4\pm16 }4}$
Factor: $x=\frac{4(-1\pm4)}4}$
Divide: $x=(-1\pm4)$
Add/Subtract: $x=-5, 3$

And we have our final answer!

6 0

3 years ago

Y= 1/3x + 2 -X + 3y = 6

sineoko [7]

Answer: yes

Step-by-step explanation:

Ok!

8 0

3 years ago