Find the slope and y-intercept of the graph of each equation. 5. y -- 2x - 7

Mathematics

1 answer:

OleMash [197]3 years ago

6 0

Answer:

If it is y=2x-7 the slope is

If it is y=-2x-7 the slope is

-2

The y-intercept is -7

Step-by-step explanation:

I don't really know how to give an explanation because the answers are in the equation so I'm sorry for that

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You need a 60% alcohol solution. On hand, you have a 480 mL of a 75% alcohol mixture. How much pure water will you need to add t

svetlana [45]

Answer:

120 mL

Step-by-step explanation:

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5 0

3 years ago

What is the arc measure of DBC in<br> degrees?

Arisa [49]

<h2>Answer:</h2><h2 />

In this context:

$\boxed{\angle DBC=x=60^{\circ}}$

<h2>Explanation:</h2>

Hello! Remember to write complete questions in order to get good and exact answers. Here the figure is missing so I'll assume the arc measure of DBC is given in radian and you want it in degrees. By definition, an arc's measure is <em>the measure of its central angle </em>being a central angle an <em>angle between two radii in a circle</em>. Suppose that angle measures:

$\angle DBC=\frac{\pi}{3}\ radian \\ \\ \\ So, \ by \ rule \ of \ three: \\\\ \\ \pi \ radian \rightarrow 180 \ degrees \\ \\ \pi/3 \ radian \rightarrow x \ degrees \\ \\ \\ x =\frac{180\pi}{3\pi}=60^{\circ} \\ \\ \\ Finally: \\ \\ \boxed{\angle DBC=x=60^{\circ}}$