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2 years ago

11

Which lines are perpendicular to the line y - 1 = 1/3(x+2)? Check all that apply.

2 answers:

Romashka-Z-Leto [24]2 years ago

8 0

The slope of the given line is 1/3.

The perpendiculars all have the negative reciprocal slope, -3.

<span>A. y + 2 = -3(x-4)

Yes, slope -3.

B. y - 5 = 3(x+11)

No, slope 3.

C. y = -3x - 5/3

Yes, slope -3.

D. y = 1/3 x - 2

No, that's slope 1/3.

E. 3x + y = 7
</span>
That's

y = -3x + 7

Another slope -3, Yes.

lesya692 [45]2 years ago

4 0

Answer:

a c e

Step-by-step explanation:

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1 year ago

The population of rabbits on an island is growing exponentially. In the year 1991, the population of rabbits was 9100, and by 19

lisabon 2012 [21]

Answer:

$39,223\ rabbits$

Step-by-step explanation:

we know that

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$y=a(1+r)^x$

where

y is the population of rabbits

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a is the initial value

r is the rate of change

we have

$a=9,100$

substitute

$y=9,100(1+r)^x$

For the year 1998

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x=1998-1991=7 years

so

we have the ordered pair (7,18,000)

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$18,000=9,100(1+r)^7$

$(18,000/9,100)=(1+r)^7$

elevated both sides to 1/7

$(1+r)=1.1023$

$r=0.1023$

therefore

$y=9,100(1+0.1023)^x$

$y=9,100(1.1023)^x$

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2 years ago

What’s the value of x

stiks02 [169]

Answer:

Step-by-step explanation:

Pythagorean theorem:

x² + x² = (9√2)²

2x² = 162

x² = 81

x = 9

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2 years ago

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Andrei [34K]

Answer:

A is the answer

Step-by-step explanation:

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2 years ago