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Bad White [126]
2 years ago
15

Alessandro wrote the quadratic equation –6 = x2 + 4x – 1 in standard form. What is the value of c in his new equation?

Mathematics
1 answer:
Black_prince [1.1K]2 years ago
7 0

Answer:

5

Step-by-step explanation:

To write it in standard form, we set the equation equal to 0.  To do this, we add 6 to each side:

-6+6 = x² + 4x - 1 + 6

0 = x² + 4x + 5

The related function is

y = x² + 4x + 5

The value of c in this function is 5.

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Use the trig identity
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So to find the max of sin(A)*cos(A), we can find the max of (1/2)*sin(2*A)

It turns out that sin(x) maxes out at 1 where x can be any expression you want. In this case, x = 2*A. 

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The greatest value of sin(A)*cos(A) is 1/2 = 0.5
4 0
2 years ago
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egoroff_w [7]

Answer:

Step-by-step explanation:

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8 0
2 years ago
Factor completely.
Serga [27]
Factor the polynomial:

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= (2u – 5)² <––– this is the answer.

I hope this helps. =)
5 0
3 years ago
A spinner is divided into 12 equal parts. The probability of spinning an x is 3/4
stich3 [128]
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6 0
3 years ago
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Find the square of the following without actual multpliation .<br><br> 43​
devlian [24]
<h2>It's <u>1849</u></h2>

I'll explain how I found it without actual multiplication,

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So,

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Hope this will help....

3 0
2 years ago
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