3 years ago

What is the solution to 3x2 + 4x + 8 = 0

Mathematics

1 answer:

Fed [463]3 years ago

6 0

Answer:

-2±2i√5 / 3

Step-by-step explanation:

You can't factor this equation, so you use the quadratic formula to solve it, which is

-b±√b-4ac/2a

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Solve the following system by Gauss-Jordan elimination.

topjm [15]

9514 1404 393

Answer:

x1 = 1/2 + 1/2t

x2 = 4 -2t

x3 = t

Step-by-step explanation:

Your answer is correct as far as it goes. The values of x1 and x2 also need to be expressed in terms of t.

x1 = 1/2 + 1/2t

x2 = 4 -2t

x3 = t

4 0

3 years ago

Factor this trinomial. Your answer should consist of two binomials. y2 - 2y - 15

ioda

Answer:

(y-5)(y+3)

Step-by-step explanation:

im assuming that the y2 meant y^2 :,33

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3 years ago

You have a cylindrical pond that has a diameter of 24 feet and has a depth of 6 feet. If you need to fill the pond three-quarter

MrRa [10]

Answer:

$5089.38

Step-by-step explanation:

Given cylinder with:

d = 24 ft, h = 6 ft

We need to fill it up to:

h = 6 ft * 3/4 = 4.5 ft

The volume is:

V = πr²h = π(d/2)²h = π*(24/2)²*(4.5) = 2035.75 ft³ (rounded)

You need to spend:

2035.75 * $2.50 = $5089.38 (rounded)

5 0

3 years ago

Find the measure of angle x in the figure below:

nevsk [136]

Answer:

See attached photo!

Step-by-step explanation:

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3 years ago

A class consisting of 4 graduate and 12 undergraduate students is random divided into 4 groups of 4. what is the probability tha

MrRissso [65]

Total = 16
Graduates = 4

$\frac{4}{16} = \frac{1}{4}$
$\frac{1}{4} \div 4 \\ = \frac{1}{4} \times \frac{1}{4} \\ = \frac{1}{16}$
$\frac{1}{16} = 0.0625$
Rounding off to 2 decimal places,
Answer is 0.06

Hope this helps. - M

5 0

4 years ago