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bonufazy [111]
3 years ago
15

Write each of the following expressions without using absolute value. |z−7|−|z−9|, if z<7

Mathematics
1 answer:
matrenka [14]3 years ago
4 0
Here is one way.

\left\{ \begin{array}{rcl}-2&\mbox{for}&z < 7\\2(z-8)&\mbox{for}&7\le z\le9\\2&\mbox{for}&9 < z\end{array}\right\,

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The triangle below is isosceles. If ∠C≅∠B, then what is BC, in units?
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Answer:

Step-by-step explanation:

If angles C and B have equal degrees then the side AC is also equal to  side AB in length and you can make their equations equal as well and solve for X.

2x+16=7x+6

get X's all on same side and the constants all on the other side,  

-2x +2x+16=7x+6+-2x

The X's on the left cancel out.

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5 0
3 years ago
Convert 72degrees into radians
kramer

Answer:

72° = 1.25 radians

Step-by-step explanation:

As we know that,

1 degree = \frac{\pi}{180} radians

Thus, 72^{\circ} = 72\times\frac{\pi}{180}radians

⇒ 72^{\circ} =\frac{2\pi}{5}radians

⇒ 72° = 1.25 radians    {∵ Using π = 22÷ 7 or 3.14}

Both degrees and radians are used to measure the angle. They are units of angle.

5 0
4 years ago
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stepladder [879]

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3 0
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945 times 134 is equal to what
allochka39001 [22]

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