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sergiy2304 [10]
3 years ago
15

Solve 2x2 + 8x + 10 = 0. using this model to he X = -b+ ✓ 62 - 4ac 2a

Mathematics
1 answer:
Lesechka [4]3 years ago
8 0

Answer:

x can have two complex solutions, which are:

-2 + i

-2 - i

Step-by-step explanation:

2x² + 8x + 10 = 0

4x² + 16x + 20 = 0

4x² + 16x + 16 = -4

(2x + 4)² = -4

2x + 4 = √-4

2x =  -4 ± i√4

2x = -4  ± 2i

x = -2 ± i

So x is equal to -2 + i and -2 - i.

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Gelneren [198K]

Steps:

Radius= 17in

Height= 10in

Formula: V=πr2h

Shape: Right cylinder

Solved for volume

H= Height

R= Radius

Description:

We know that R is 17 inches, and H is 10 inches. Since we are finding the volume we use the formula V=πr2h to calculate. After calculating your answer will come as V≈9079.2in³. You also said to round your answer to the nearest hundredth. After rounding your answer to th enearest hundredth your answer will come as 9,079.20.

Answer: V≈9079.2in³

Round to the nearest hundredth = 9,079.20

Please mark brainliest

<em><u>Hope this helps.</u></em>

8 0
4 years ago
Janet is comparing prices of bottled water. One bottle of water costs $1.92 and contains 12 ounces. Another bottle of water cost
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Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

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3 0
3 years ago
Calculate the area of a square with sides of 5 inches.
Luda [366]

Answer:

A = 25 in²

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Geometry</u>

  • Area of a Square: A = x²

Step-by-step explanation:

<u>Step 1: Define</u>

Side length = 5 in

<u>Step 2: Solve for </u><em><u>A</u></em>

  1. Substitute:                    A = (5 in)²
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6 0
3 years ago
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In the year 2005 , a total of 750 fish were introduced into a manmade lake . The fish population was expected to grow at a rate
xxTIMURxx [149]

Answer:

The fish population will be in 2050 = 27,123

Step-by-step explanation:

Given,

In 2005, the total number of fish were introduced (fish population), PV = 750

The growth rate, i = 8.3% = 0.083

The difference between 2050 and 2005 is (2050 - 2005), n = 45 years

We need to solve this problem with the help of future value of compounding. We know, FV = PV (1+i)^n, where, PV = present value, i = interest rate, n = period.

Therefore, the fish population will be in 2050 = 750 x (1 + 0.083)^45

The fish population will be in 2050 = 27,123.26

2050 fish population = 27,123 (Nearest to whole number).

3 0
3 years ago
How do I make 7 x 2 + 5 =x a 2 step equation
Alex17521 [72]

Answer:

7x2=

14+5=

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Step-by-step explanation:

You usually don't write the answer after the equal symbol. You could, or can, write the answer after the equal symbol to make it into a 2 step equation.

7x2= 14

14+5= x a

4 0
3 years ago
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