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stiv31 [10]
2 years ago
13

-3.8x = -7.4 Is x=2 is a solution

Mathematics
1 answer:
Lana71 [14]2 years ago
6 0
No

The anser is x= -11,2
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If f(x) = 1 – x, which value is equivalent to |f(i)|?
lukranit [14]
Determine which value is equivalent to | f ( i ) | if the function is: f ( x ) = 1 - x. We know that for the complex number: z = a + b i , the absolute value is: | z | = sqrt( a^2 + b^2 ). In this case: | f ( i )| = | 1 - i |. So: a = 1, b = - 1. | f ( i ) | = sqrt ( 1^2 + ( - 1 )^2) = sqrt ( 1 + 1 ) = sqrt ( 2 ). ANSWER IS C. sqrt( 2 )
3 0
3 years ago
The difference of the square of a number and 28 is equal to 3 times that number find the positive solution
lutik1710 [3]
<h2>The required positive number is 7.</h2>

Step-by-step explanation:

Let the number = x

To find, the positive number = ?

According to question,

x^{2}-28=3x

⇒ x^{2} - 3x - 28 = 0

By Factorisation method,

⇒ x^{2} - 7x + 4x - 28 = 0

⇒ x(x - 7) + 4(x - 7) = 0

⇒ (x - 7)(x + 4) = 0

⇒ x - 7 = 0 or, x + 4 = 0

⇒ x  = 7 or, x = - 4 [ - 4 is a negative number)

⇒ x  = 7

Thus, the required positive number is 7.

8 0
3 years ago
What is the condition that causes an infinite geometric series to have no sum? Explain why
miv72 [106K]
This only happens when the ordinary ratio is greater than one, the terms of the sequence will get bigger and bigger, and if you add larger numbers you won't get a definitive answer.
4 0
2 years ago
Solve for x: <br> 4(x + 2) = 3(x - 2)
Pani-rosa [81]

Answer:

x = -14

Step-by-step explanation:

Step 1: Write equation

4(x + 2) = 3(x - 2)

Step 2: Solve for <em>x</em>

  1. Distribute: 4x + 8 = 3x - 6
  2. Subtract 3x on both sides: x + 8 = -6
  3. Subtract 8 on both sides: x = -14

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

4(-14 + 2) = 3(-14 - 2)

4(-12) = 3(-16)

-48 = -48

7 0
3 years ago
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What is the inverse operation of a number squared?
Sedbober [7]
<span>Finding the square root.</span>
7 0
3 years ago
Read 2 more answers
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