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3 years ago

What are supplementary lines I’m sooooo confused

Mathematics

2 answers:

PIT_PIT [208]3 years ago

8 0

Hey!

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Answer:

Supplementary lines are two angles that when added together it equals to 180 degrees.

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Example:

Let's say angle a was 60 degrees and angle b was 120 degrees. We add both them together and get 180 degrees in total. So these angles would be supplementary.

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Hope This Helped! Good Luck!

pogonyaev3 years ago

3 0

Answer:

Supplementary lines are 180 and are two angles that can add up to 180 degrees make a staraight angle

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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So, 15 =x

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Step-by-step explanation:

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pls help will give brainliest Rena used the steps below to evaluate the expression (StartFraction (x Superscript negative 3 Base

kaheart [24]

Answer:

First "order of operations" mistake: step 2

First arithmetic mistake: step 4

Step-by-step explanation:

As we understand Rena's work, she wants to simplify ...

$\left(\dfrac{x^{-3}y^{-2}}{2x^4y^{-4}}\right)^{-3}$

for x = -1 and y = 2.

Her work seems to be ...

Step 1

$\text{Substitute $x=-1$ and $y=2$ into the expression}\\\\\left(\dfrac{(-1)^{-3}2^{-2}}{2(-1)^42^{-4}}\right)^{-3}\qquad\text{no error}$

Step 2

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Step 3

$\text{Evaluate the power to a power}\\\\\dfrac{2^{-6}}{2^{-3}(-1)^{21}}\qquad\text{no error}$

Step 4

$\text{Use reciprocals and find the value}\\\\\dfrac{1}{2^32^6(-1)^{21}}=\dfrac{1}{8\cdot 64\cdot (-1)}=\dfrac{-1}{512}\qquad\text{error: $2^3$ is used instead of $2^{-3}$}$

_____

So, the first arithmetic error is in Step 4. However, the order of operations requires exponents be evaluated first. Doing that makes step 2 look like ...

$\left(\dfrac{-\dfrac{1}{4}}{2(1)\dfrac{1}{16}}\right)^{-3}=(-2)^{-3}\qquad\text{proper Step 2}$

We expect your answer is supposed to be Step 4.

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4 years ago

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White raven [17]

The answer is 40 because you get 16+24

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3 years ago