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jok3333 [9.3K]
3 years ago
14

Help plz i need help with this please provide an explanation

Mathematics
1 answer:
miss Akunina [59]3 years ago
5 0
It’s easier to see and solve if you draw the picture
To find LD you need to subtract CD to CL
CD - CL = LD
14.2 - 5.3 = 8.9
=> LD = 8.9

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Pweasee help!!!!!!!!!!!!!​
Oduvanchick [21]

Answer:

B. \dfrac{1}{3}x-\dfrac{1}{4}y-\dfrac{4}{5}+\dfrac{1}{3}x-\dfrac{1}{4}y

Step-by-step explanation:

Consider all options:

A. In the expression

\dfrac{1}{3}x-\dfrac{1}{4}y-\dfrac{4}{5}+\dfrac{1}{3}x+\dfrac{1}{4}y

combine the like terms:

\left(\dfrac{1}{3}x+\dfrac{1}{3}x\right)+\left(-\dfrac{1}{4}y+\dfrac{1}{4}y\right)-\dfrac{4}{5}

Use distributive property:

x\left(\dfrac{1}{3}+\dfrac{1}{3}\right)+y\left(-\dfrac{1}{4}+\dfrac{1}{4}\right)-\dfrac{4}{5}=\dfrac{2}{3}x-\dfrac{4}{5}

This option is false.

2. In the expression

\dfrac{1}{3}x-\dfrac{1}{4}y-\dfrac{4}{5}+\dfrac{1}{3}x-\dfrac{1}{4}y

combine the like terms:

\left(\dfrac{1}{3}x+\dfrac{1}{3}x\right)+\left(-\dfrac{1}{4}y-\dfrac{1}{4}y\right)-\dfrac{4}{5}

Use distributive property:

x\left(\dfrac{1}{3}+\dfrac{1}{3}\right)+y\left(-\dfrac{1}{4}-\dfrac{1}{4}\right)-\dfrac{4}{5}=\dfrac{2}{3}x-\dfrac{1}{2}y-\dfrac{4}{5}

This option is true.

3. In the expression

\dfrac{1}{3}x-\dfrac{1}{4}y-\dfrac{1}{5}-\dfrac{1}{3}x-\dfrac{3}{5}-\dfrac{1}{4}y

combine the like terms:

\left(\dfrac{1}{3}x-\dfrac{1}{3}x\right)+\left(-\dfrac{1}{4}y-\dfrac{1}{4}y\right)+\left(-\dfrac{1}{5}-\dfrac{3}{5}\right)

Use distributive property:

x\left(\dfrac{1}{3}-\dfrac{1}{3}\right)+y\left(-\dfrac{1}{4}-\dfrac{1}{4}\right)-\dfrac{4}{5}=-\dfrac{1}{2}y-\dfrac{4}{5}

This option is false.

4. In the expression

\dfrac{1}{3}x-\dfrac{1}{4}y+\dfrac{2}{5}+\dfrac{1}{3}x-\dfrac{2}{5}-\dfrac{1}{4}y

combine the like terms:

\left(\dfrac{1}{3}x+\dfrac{1}{3}x\right)+\left(-\dfrac{1}{4}y-\dfrac{1}{4}y\right)+\left(\dfrac{2}{5}-\dfrac{2}{5}\right)

Use distributive property:

x\left(\dfrac{1}{3}+\dfrac{1}{3}\right)+y\left(-\dfrac{1}{4}-\dfrac{1}{4}\right)=\dfrac{2}{3}x-\dfrac{1}{2}y

This option is false.

7 0
3 years ago
What is the domain of the graph function
andrey2020 [161]

Answer:

D

Step-by-step explanation:

it -4<x<8 your answer is d

5 0
4 years ago
Solve all four questions and I’ll give BRAINLIEST!!!!!<br><br> Plz help due today..
neonofarm [45]

Answer:

4)120

5)13

6)70

7)115

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How do you write 23.5 in word form
vladimir1956 [14]

We have the following number:


23.5


This number can be written as:


23 + 0.5


Or:


23 + 1/2


So, the new expression gives us two new numbers. In this way, we can say that:


23 = Twenty three

1/2 = a half


In conclusion, the number 23.5 can be written as follows:


<em>23.5 = Twenty three and a half</em>

5 0
3 years ago
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.please help me with this I will crown you brainlest
Marizza181 [45]
You can prove it by the SAS postulate which should be the first option
4 0
3 years ago
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