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andreyandreev [35.5K]
3 years ago
13

What is the value of b^2 - 4ac for the following equation? 2x^2 + 3x = -1

Mathematics
1 answer:
Shtirlitz [24]3 years ago
6 0
Hello :
2x²+3x+1=0
a=2     b=3    c=1
b²-4ac = (3)²-4(2)(1) = 1
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The surface area of the cylinder is 18.84 square feet

<h3>How to determine the surface area?</h3>

The given parameters are

Height, h = 2 ft

Diameter, d = 2 ft

The radius (r) is half of the diameter (d)

This is calculated as:

Radius = Diameter/2

So, we have:

r = d/2

Substitute 2 for d

r = 2/2

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The surface area is then calculated using the following formula

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Substitute the given values in the above equation

So, we have:

A = 2 * 3.14 * 1^2 + 2 * 3.14 * 1 * 2

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Hence, the surface area of the cylinder with the given height and radius is 18.84 square feet

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brainly.com/question/2835293

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4 0
2 years ago
URGENT Two numbers have a sum of 2 and a difference of -16. What are the numbers?
Firlakuza [10]

Answer:

-7 and 9!

Step-by-step explanation:

To get to the sum of 2 you add -7 and 9.

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This makes no sense to me keep getting the wrong answers when i try to figure it out
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The new rent is 930, so you have to reorder the data so it goes from least to greatest again. 745, 915, 925, 930, 965, 990, 1020, 1040, 1050, 1120. After finding the median again you get 977.5. Subtracting the two medians gives you $27.5 as how much the median decreased. Hope this helps!
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3 years ago
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Irina-Kira [14]

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