3 years ago

PLZ help with expression

Mathematics

1 answer:

umka2103 [35]3 years ago

6 0

The last two options are correct, but it looks like you’ve got them :)

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Line AB passes through points A(–6, 6) and B(12, 3). If the equation of the line is written in slope-intercept form, y = mx + b,

inn [45]

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points A(-6, 6) and B(12, 3). Substitute:

$m=\dfrac{3-6}{12-(-6)}=\dfrac{-3}{18}=-\dfrac{3:3}{18:3}=-\dfrac{1}{6}$

Therefore we have $y=-\dfrac{1}{6}x+b$ .

Put the coordinates of the point B to the equation:

$3=-\dfrac{1}{6}(12)+b$

$3=-2+b$ <em>add 2 to both sides</em>

$5=b\to b=5$

Answer:

$m=-\dfrac{1}{6}\\\\b=5$

8 0

3 years ago

Simplify 15r10-5r8+40r2/5r4

Inessa05 [86]

R6 (15r4-5r2+8)

I maybe wrong.. but i maybe right..

5 0

3 years ago

What are the domain and range of the function f(x)= 3^x+5

rewona [7]

Answer:

Step-by-step explanation:

Domain:all real values

Range:[5,∞)

5 0

3 years ago

A small box weighs 1 25 pounds. A large box weighs 3 1/3 time as much as the small box. how much does the large box weigh?

egoroff_w [7]

Answer:

416.7pounds

Step-by-step explanation:

Given parameters:

Weight of the small box = 125pounds

Unknown:

Weight of the larger box = ?

Solution:

The large box weighs $3\frac{1}{3}$ times as the small box:

So;

= 125pounds x $\frac{10}{3}$

= 416.7pounds

6 0

3 years ago

Please help me with this!..

ch4aika [34]

Answer:

I think it would be 12

Step-by-step explanation:

3 0

3 years ago