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maw [93]
3 years ago
10

Solve log(base 2) (x+1) + log (base 2) (x-5)= 4

Mathematics
1 answer:
Afina-wow [57]3 years ago
6 0
(x+1)(x-5)= 2^4=16

x^2 -4x -5 =16

x^2-4x-21=0

x= -3 or 7
but we would choose 7 as the answer as -3 gives negative value at (x+1) and we know that log of negative number is not defined.
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Step-by-step explanation:

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11) Solve the following equations, using the lines to show each step.<br><br> 4x + 5 = 2x + 7
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Answer:

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6 0
2 years ago
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Please guys i only have one shot at this!
antoniya [11.8K]

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What are 3 completed examples for functions?
Lyrx [107]
Example 1

Write y = x2 + 4x + 1 using function notation and evaluate the function at x = 3.

Solution

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By applying function notation, we get

f(x) = x2 + 4x + 1

Evaluation:


Substitute x with 3

f (3) = 32 + 4 × 3 + 1 = 9 + 12 + 1 = 22

Example 2

Evaluate the function f(x) = 3(2x+1) when x = 4.

Solution

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f (4) = 3[2(4) + 1]

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Example 3

Write the function y = 2x2 + 4x – 3 in function notation and find f (2a + 3).

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Substitute x with (2a + 3).

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= 8a2 + 32a + 27
3 0
3 years ago
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