3 years ago

The only solution of the equation x2 + bx + 16 = 0 is x = 4. What is the value of b?

Mathematics

2 answers:

denis23 [38]3 years ago

4 0

Answer:

Step-by-step explanation:

x2+bx+16=0

4x2+16x4+16=0

8+64+16=0

72+16=0

Jlenok [28]3 years ago

4 0

Answer:

guys the answer is c.. on EDG at least trust me i just did it

Step-by-step explanation:

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write an equation in slope intercept form for the line that passes through (4, -4) and is parallel to 3x+4x=2y-9

photoshop1234 [79]

Answer:

$\large\boxed{y=\dfrac{7}{2}x-18}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

Convert the equation of a line 3x + 4x = 2y - 9 to the slope-intercept form:

$3x+4x=2y-9$

$7x=2y-9$ add 9 to both sides

$7x+9=2y$ divide both sides by 2

$\dfrac{7}{2}x+\dfrac{9}{2}=y\to y=\dfrac{7}{2}x+\dfrac{9}{2}$

Parallel lines have the same slope. Therefore we have the equation:

$y=\dfrac{7}{2}x+b$

Put the coordinates of the point (4, -4) to the equation:

$-4=\dfrac{7}{2}(4)+b$

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$-4=14+b$ subtract 14 from both sides

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Finally we have the equation:

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3 years ago

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Answer:

See below in bold.

Step-by-step explanation:

1 teaspoon holds 5 ccs so that is 2 teaspoons per dose.

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