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3 years ago

How how fast please I need help

Mathematics

2 answers:

tatuchka [14]3 years ago

6 0

Answer:

19.5 degrees

Step-by-step explanation:

All triangles add up to 180 degrees

<H = 127, <G = 33.5

<H + <G = 160.5

180 - 160.5 = 19.5

Vlada [557]3 years ago

5 0

Let's remember one of the most important rules of a triangle!

<u>All angles must add up to 180 degrees!</u>

With that in mind, let's add the angles that we know together.

$33.5 + 127 = 160.5$

We know two angles, simply meaning the last angle should be able to make 180 degrees when added to 160.5.

Let's make it easier- we can subtract 160.5 from 180!

$180 - 160.5 = 19.5$

Thus, the missing angle is 19.5 degrees!

<em>Please let me know if this helped, or if you have any questions!</em>

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Answer:

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Step-by-step explanation:

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3 years ago

Total mass vs. numbers of cd and numbers of cd

Gekata [30.6K]

Answer: Choice A) M = 0.25n + 100

=============================================================

Explanation:

For now, I'll treat n as x, and M as y.

In other words,

x = number of CDs
y = total mass in kg

Let's select two points from this graph. I'll pick (200,150) and (400,200)

The slope of the line through those points is

m = (y2-y1)/(x2-x1)

m = (200-150)/(400-200)

m = 50/200

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Now we'll use the point (x,y) = (200,150) along with that slope value to find the y intercept b

y = mx+b

150 = 0.25*200+b

150 = 50+b

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100 = b

b = 100

You could also use (x,y) = (400,200) and you should get the same b value.

In fact, any other point from this graph works as well.

------------------------------

Since m = 0.25 and b = 100, we go from y = mx+b to y = 0.25x+100

This then translates over to M = 0.25n + 100 which is choice A

To help verify this, let's say we plugged in n = 100

M = 0.25*n + 100

M = 0.25*100 + 100

M = 25 + 100

M = 125

Which is confirmed by what the graph shows. I'll let you check the other points as well.

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3 years ago

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3 years ago

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4 years ago

How how fast please I need help​

How how fast please I need help