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3 years ago

What is the slope of the line that passes through the points (-16, -5) & (-15, -7)

Mathematics

1 answer:

In-s [12.5K]3 years ago

8 0

Answer:

<u>slope=-2</u>

Step-by-step explanation:

Okay so we just take those coordinates and apply them to this formula:

y2-y1/x2-1

then simplify to get -2

if you want me to elaborate just say the word

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german

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

(20 points and brainliest) Which table best classifies the following numbers as rational and irrational? negative 4 over 5., squ

Mademuasel [1]

Answer:

Step-by-step explanation:

cant tell what goes with which chart....but I can do this,..

negative 4 over 5 .......rational

sqrt 2....irrational

2.5.....rational

0.4 bar.....irrational

sqrt 16....rational

8 0

3 years ago

Use the substitution method to solve the system of equations 8x5y=9 y=x+7

Greeley [361]

Answer:

( − 7.00006693 , − 0.00006693 ) ( 0.68099975 , 7.68099975 )

Step-by-step explanation:

3 0

3 years ago

I literally have no clue how to do this.

timurjin [86]

Answer:

Step-by-step explanation:

Sine is opposite divided by the hypotenuse.

sin(30) = 9/y

1/2 = 9/y

y = 18

Cosine is adjacent divided by the hypotenuse

cos(30) = x/18

$\frac{\sqrt{3} }{2}=x/18\\x=9\sqrt{3}=15.6$

3 0

3 years ago

Suppose it takes 4 hours for a certain strain of bacteria to reproduce by dividing in half. If 70 bacteria are present to begin

Sauron [17]

Answer:

1 day: 4480

2 days: 8960

3 days: 13440

$f^{-1}(x) = \sqrt{\frac{x -4}{4}}$ ---- function inverse

Step-by-step explanation:

Given

$f(x) = 70 \cdot 64x$

Solving (a): The amount present after 1 day.

Here, $x =1$

So:

$f(1) = 70 \cdot 64*1= 4480$

Solving (b): The amount present after 2 days.

Here, $x =2$

So:

$f(2) = 70 \cdot 64*2= 8960$

Solving (c): The amount present after 3 days.

Here, $x = 3$

So:

$f(3) = 70 \cdot 64*2= 13440$

Solving (d): The inverse function of:

$f(x)= 4x^2 + 4$

Replace f(x) with y

$y= 4x^2 + 4$

Swap x and y

$x= 4y^2 + 4$

Rewrite as:

$4y^2 = x -4$

Divide by 4

$y^2 = \frac{x -4}{4}$

Take square roots

$y = \sqrt{\frac{x -4}{4}}$

Replace y with function inverse

$f^{-1}(x) = \sqrt{\frac{x -4}{4}}$

6 0

3 years ago