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Harman [31]
3 years ago
9

????????????????????

Mathematics
1 answer:
Shtirlitz [24]3 years ago
3 0
It’s a diagram ur welcome
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Solve the equation. (x + 4)^2 = 15 - 2x^2.<br><br> Quadratic Formula
Licemer1 [7]

The equation has two solutions x_{1} =  [-4 + 2√13]/3] and

x_{2} = [-4 - 2√13]/3]

Given the question:

(x + 4)^2 = 15 - 2x^2.

To solve the above Equation by using Quadratic Formula:
Solving Steps of Equation:

(x+4)^2 = 15 -2x^2

Expand the expression

x^{2} +8x+16=15-2x^2

Move the expression to the left

x^{2} +8x+16-15+2x^2 = 0

Collect like terms

3x^{2} +8x+1=0

Use the Quadratic formula:

x = [-b ± √(b2 – 4ac)]/2a

x = [-8 ± √(8^2 – 4x3x1)]/2x 3

Multiply and evaluate :

x = [-8± √(64 – 12)]/6]

Calculate:

x = [-8± 2√13]/6]

Separate the solutions

x_{1} =  [-4 + 2√13]/3]

x_{2} = [-4 - 2√13]/3]

Hence, The equation has two solutions x_{1} =  [-4 + 2√13]/3] and

x_{2} = [-4 - 2√13]/3]

Learn more about Quadratic Formula at:

brainly.com/question/9300679

#SPJ1

8 0
1 year ago
The volume of a cube is 125cm3.
sergeinik [125]

Answer:

8000 cubes

Step-by-step explanation:

Given that 1KL is 1 Kilo liters

Then conversion of 1KL to cm³ => 1,000,000 cm³

Therefore, since we have a cube to be 125 cm³

Hence, to find the number of cubes of ice blocks that would make 1KL

We divide 1,000,000 cm³ from 125 cm³

=> 1,000,000 ÷ 125

=> 8,000

Therefore, the correct answer is 8,000 cubes

7 0
2 years ago
Ivan is saving money to buy a computer with. He started with $225 in his savings account and the first week he added $75, the se
hjlf
225+75+200-50+125=x. 300+200-50+125=x 500-50+125=x. 450+125=x. 575=x 895-575=320 dollars left to save.
3 0
3 years ago
Read 2 more answers
Factor out a greatest common factor <br> 25x^3+10x^2+5x
Dmitriy789 [7]
The greatest common factor would be 5x because all the variables can be divided by 5x.

The answer itself already factored would be

5x(5x^2+2x+1)
7 0
3 years ago
Read 2 more answers
Fast food hamburgers have high amounts of cholesterol. Two McDonald’s Quarter Pounders and three Burger King Whoppers contain a
Anastasy [175]

Answer:

McDonald’s Quarter Pounders = 67 mg of cholesterol

Burger King Whoppers = 87 of cholesterol

Step-by-step explanation:

McDonald’s Quarter Pounders = m

Burger King Whoppers = b

2m + 3b = 395

3m + 1b = 288

3m + b = 288

b = -3m + 288

2m + 3b = 395

2m + 3(-3m + 288) = 395

2m - 9m + 864 = 395

- 7m + 864 = 395

- 7m/7 = -469/7

-m = -67

-m/-1 = -67/-1

m = 67

2m + 3b = 395

2(67) + 3b = 395

134 + 3b = 395

3b = 395 - 134

3b = 261

3b/3 = 261/3

b = 87

Check: m = 67; b = 87

2m + 3b = 395

3m + 1b = 288

2m + 3b = 395

2(67) + 3(87) = 395

134 + 261 = 395

395 = 395

3m + 1b = 288

3(67) + 1(87) = 288

201 + 87 = 288

288 = 288

(Probs too late but welp :p)

5 0
3 years ago
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