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3 years ago

Factor completely. x2−2x−24 Enter your answer in the box.

Mathematics

1 answer:

ankoles [38]3 years ago

7 0

Answer:

x = -4

x = 6

Step-by-step explanation:

x² - 2x -24 = 0

x² - 6x + 4x - 24 = 0

x ( x - 6 ) + 4 ( x - 6) = 0

x + 4 and x- 6

so either of them is zero so values if x are

X = -4

X = 6

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deff fn [24]

Answer: 5,000 Milligrams

Step-by-step explanation:

1 gram = 1,000 milligrams

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3 years ago

Solve by taking the square root I need help understanding steps this is hard for me.

Shalnov [3]

Answer:

x= $-2 \pm \sqrt{13}$

Step-by-step explanation:

Given: $3x^{2} -12x+27= 0$

This is a quadratic equation.

$3x^{2} -12x+27= 0$

Taking common 3 from the equation given

⇒ $3(x^{2} -4x+9)=0$

dividing both side by 3

⇒ $x^{2} -4x+9=0$

By using different factor, we can observe this trinomial can not be factored.

∴ solving it by completing the square.

⇒ $x^{2} -4x+9=0$

adding 9 on both side

⇒ $x^{2} -4x= 9$

To get a perfect square number as coeffecient of x is 4, lets add both side by 4.

⇒ $x^{2} -4x+4= 13$

we know, $(x+2)^{2} = x^{2} +2\times x\times 2+2^{2}$

∴ $(x+2)^{2} =13$

Taking Square root on both side, remember; √a²= a

⇒ $(x+2)= \sqrt{13}$

opening parenthesis

⇒ $x+2= \sqrt{13}$

subtracting both side by 2

∴ x= $-2 \pm \sqrt{13}$

7 0

3 years ago

Find the volume make it an improper fraction then a mixed number please do a step by step explanation and I will give you brainl

alexandr402 [8]

Answer:

As an improper fraction: 8463/32

As a mixed number 264 15/32

Step-by-step explanation:

1. Multiply the base number times the denominator, then add the numerator to that number, and put it over the original denominator.

2. Do this for all of the numbers

3. multiply straight across, top*top*top, then bottom*bottom*bottom numbers. That number will be your improper fraction. Then divide that top number by the bottom denominator, take it out, leave the remainder as the numerator, and you have your mixed number.

8 0

3 years ago

Read 2 more answers

The sum of the reciprocal of a positive number and the reciprocal of 3 more than the number is 13/40 Find the number and equatio

Juliette [100K]

Answer: 3.325

Step-by-step explanation:

if its addition then the answer is 3.325

if it is subtracting then the answer is 107/40

if its multiplying then its idk if its dividing then its idk

5 0

3 years ago