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Vikki [24]
3 years ago
8

Perpendicular to y=4x-7; contains the point (4,3)

Mathematics
1 answer:
san4es73 [151]3 years ago
5 0
Okay, so a general rule for finding perpendicular lines in the form of y = mx + b is y = (-1/m) + b.
First, let's ignore b (-7) because we're going to find that later.
A perpendicular line to y = 4x + b is y = -1/4x + b.
Alright, so now let's plug in the values. They are in the form of (x,y), so let's plug them in accordingly.

3 = -1/4(4) + b
3 = -1 + b
b = 4
y = -1/4x + 4
So a line perpendicular to y = 4x - 7 is y = -1/4x + 4.
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fomenos

Answer:

$3220

Step-by-step explanation:

A man invests $1000 in a 12-month certificate of deposit paying 8% interest.

So, after 1 year his money will become from the certificate deposit =  $1000( 1+ \frac{8}{100} ) = 1080

Again the man invest $2000 in municipal bonds that pays 7% a year.

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5 0
4 years ago
PLEASE ANSWER TO THIS
prohojiy [21]

Answer:

x = -4

Step-by-step explanation:

3=\frac{4x+31}{5}

15=4x+31

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x=\frac{-16}{4}

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3 0
3 years ago
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How do you simplify this
Dafna11 [192]

Top:

x / (x + 1) - 1 / x

= [x^2 - (x +1)] / x(x+1)

= (x^2 - x - 1 ) / x (x+1)

Bottom:

x / (x + 1) + 1 / x

= [x^2 + (x +1)] / x(x+1)

= (x^2 + x + 1 ) / x (x+1)

Now you have:

(x^2 - x - 1 ) / x (x+1)

----------------------------

(x^2 + x + 1 ) / x (x+1)

= (x^2 - x - 1 ) / x (x+1) * x (x+1) / (x^2 + x + 1 )

= (x^2 - x - 1 ) /(x^2 + x + 1 )

Answer:

x^2 - x - 1

---------------------

x^2 + x + 1

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Step-by-step explanation:

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