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3 years ago

What is the slope for (-12,-5),(0,-8)

Mathematics

1 answer:

Stolb23 [73]3 years ago

3 0

Answer:

m= - 1/4

Step-by-step explanation:

You might be interested in

Given that 3^x = 4^y = 12^z, show that z = (xy)/(x+y).

irinina [24]

$3^{x} = 4^{y} = 12^{z}$
$3^{x} = 4^{y} = (4 \cdot 3)^{z}$
$3^{x} = 4^{y} = 4^{z} \cdot 3^{z}$

$\text{Let a } = 3^{x} = 4^{y} = 4^{z} \cdot 3^{z}$
$log_3a = x$
$log_4a = y$
$log_{(4 \cdot 3)}a = z$

Using change of base:
$x = \frac{lna}{ln3}$
$y = \frac{lna}{ln4}$
$z = \frac{lna}{ln(4 \cdot 3)}$

$ln3 = \frac{lna}{x}$
$ln4 = \frac{lna}{y}$
$ln(4 \cdot 3) = \frac{lna}{z}$

Now, ln(4 · 3) = ln(4) + ln(3)

$\frac{lna}{z} = \frac{lna}{x} + \frac{lna}{y}$
$\frac{1}{z} = \frac{1}{x} + \frac{1}{y}$
$\frac{1}{z} = \frac{x + y}{xy}$

$\therefore z = \frac{xy}{x + y}$

8 0

4 years ago

The weight of 8 science books is 28 pounds. What is the weight of 11 science books?

n200080 [17]

First,divide 28 divided by 8 which is 3.5
then,multiply your answer (3.5) times the 11 books.

so 3.5 times 11 which equals 38.5

8 0

3 years ago

How would the real number 1/2 be written as a complex number?<br> 1+2i<br> 1/2i<br> 1/2+0i<br> 1\2

erica [24]

Answer:

1/2 =0.5

1/2+0i=io+1/2

1/2i=1/2i

1+2i

=1+2i

Step-by-step explanation:

4 0

3 years ago

~ ! ANGLE MEASURE ! ~

Troyanec [42]

Answer:

1 and5

Step-by-step explanation:

.......?...........

6 0

3 years ago

The difference of twice a number and 3 is 11

Softa [21]

Let's break this down:

The difference: Something's gotta be subtracted
Twice a number: So 2 times a number, or n
and 3: So we gotta subtract 2n and 3
is 11: The final answer is 11
So altogether is:

2n - 3 = 11

7 0

4 years ago