2 years ago

Someone h e l p m e please

Mathematics

1 answer:

Phoenix [80]2 years ago

8 0

Answer:

the answer is D I think <3♡♡♡♡♡

Step-by-step explanation:

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Write the expression (3 - 4i) + (5 + 9i) in the standard form a + bi.

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2 years ago

What the slope and y intercept ? and how did you find it ?

EastWind [94]

Answer:

Slope: $m=4$

y-intercept: $b=-1$

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

$y=mx+b$

Where "m" is the slope and "b" is the y-intercept.

The slope can be found with the following formula:

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

In this case you can say that:

$y_2=-5\\y_1=11\\\\x_2=-1\\x_1=3$

Knowing this values you can substitute them into the formula and then evaluate, in order to find the slope. This is:

$m=\frac{-5-11}{-1-3}\\\\m=\frac{-16}{-4}\\\\m=4$

By definition, the line intersects the y-axis when the value of "x" is 0.

Notice in the table that when $x=0$ , $y=-1$

Therefore, the y-intercept is:

$b=-1$

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2 years ago

A truck is painting traffic lines along a highway.The truck paints 8 miles of lines in 3 hours.At that rate, how many miles can

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The answer would be 32 miles (I think) if you set up a proportion you should get this answer.

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2 years ago

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