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RSB [31]
4 years ago
10

Solve for x in the equation x2 - 12x+36 = 90.

Mathematics
1 answer:
cupoosta [38]4 years ago
5 0

Answer:

<u>The correct answer is A. x = 6 + 3 √10</u>

Step-by-step explanation:

Let's solve for x:

x² - 12x + 36 = 90

Factoring this quadratic equation, we have:

(x - 6) (x - 6) = 90

(x - 6)² = 90

x - 6 = √90 (Square root to both sides of the equation)

x = 6 + √90 (Adding 6 to both sides of the equation)

x = 6 + √9 * 10

x = 6 + √3² * 10

x = 6 + 3 √10

<u>The correct answer is A. x = 6 + 3 √10</u>

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Are these correct? If not help me please??
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Answer: no, no, yes, no, yes, yes

Step-by-step explanation:

x + 1, 2x, these are not equivalent

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10x, 5(x+5)

5(x+5) distribute the 5 to get 5(x+5) = 5x + 25

5x + 25 is not equal to 10x, so no

no

1 + 2x = 2x + 1, these are equivalent since the constant and coefficients are the same

yes

2x, 2x - 5, these are not equivalent since once has a constant of -5 while the other does not

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15x -1, 3(x+4x) - (3-2)

3(x+4x) - (3-2) combine like terms

3(5x) - (1) multiply through parentheses

= 15x -1

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3 0
3 years ago
Read 2 more answers
There are 1,200 students at roosevelt middle school. There are 700 boys at the school. What percentage of the students at roosev
Marat540 [252]

Answer:

100x=256.25

Step-by-step explanation:

x/1025=25/100

What is 25% of 1025

that would be 1025×25

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3 0
3 years ago
Four less than the sum of a number and 20 is 16. What is the number
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3 0
3 years ago
Find geometric mean between 3 and 6
zalisa [80]
geometric\ mean\ between \ a\ and\ b\ = \sqrt{a\cdot b} \\----------------------\\\\geometric\ mean= \sqrt{3\cdot6} = \sqrt{3\cdot3\cdot2} =3\cdot \sqrt{2}
3 0
3 years ago
Read 2 more answers
1
Westkost [7]

The difference between the two mass is 151950g

Data;

  • Mass a = 29.48kg
  • Mass b = 181,430g
<h3>Difference Between The Mass</h3>

To calculate the difference between the mass, we must do so in the same unit. i.e both mass a and mass b must be in the same unit.

<h3>Conversion of Mass from Kg to g</h3>

Let's convert mass a from kg to g

1kg = 1000g

Using this, we can find how many grammes are in 29.48kg

1kg = 1000g\\29.48kg = x\\x = 29.48 * 1000\\x = 29480g

Now we can find the difference between mass b and mass a

b - a = 181430 - 29480 = 151950

The difference between the two mass is 151950g

Learn more on difference between two numbers here;

brainly.com/question/18591813

4 0
3 years ago
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