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scoray [572]
3 years ago
7

Simplify:(2x+y-z)^2-(2x+y+z)^2

Mathematics
1 answer:
storchak [24]3 years ago
5 0

Q: "Simplify the following expression (2x+y-z)^2-(2x+y+z)^2"  

As a simplified expression is  

A: -8xz - 4yz

Hopefully this helps you ^0^

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The ratio of men's to women's at a lecture is 2 to 5. If there is 25 women's how many men's are there
andriy [413]

Answer:

10

Step-by-step explanation:

because 25 is 5 times as much so you multiply 5 by 2 and you get 10.

7 0
3 years ago
*PLS HELP!!*<br>{The Picture Is In The Attachment}​
mash [69]

Answer:

B is 45    A is 135

Step-by-step explanation:

45 + 135 = 180

45 x 3 = 135

135 is three times as large as 45

135 and 45 are supplementary angles

6 0
2 years ago
Let sin(−θ)=−3/5 and tanθ&gt;0. What is the value of cos(−θ)?
Jobisdone [24]

Answer:

The value of  Cos (-Ф) \dfrac{\textrm 4}{\textrm 5} .

Step-by-step explanation:

Given Trigonometric function as :

sin( - Ф ) = \frac{- 3}{5}

- sin Ф = \frac{- 3}{5}

So, sin Ф = \frac{ 3}{5}

Now, as sin Ф = \dfrac{\textrm perpendicular}{\textrm hypotenuse}

So ,  \dfrac{\textrm perpendicular}{\textrm hypotenuse} =  \frac{ 3}{5}

So, perpendicular = 3

And hypotenuse = 5

Now,<u> From Pythagoras Theorem</u>

Base ² = Hypotenuse² - Perpendicular²

Or, Base ² = 5² - 3²

Or, Base ² = 25 - 9

Or, Base ² = 16

∴  Base = \sqrt{16}

I.e Base = 4

Now, Cos Ф =  \dfrac{\textrm base}{\textrm hypotenuse}

So, Cos Ф =  \dfrac{\textrm 4}{\textrm 5}

Now , Since

Cos ( - Ф ) = Cos Ф

So,  Cos ( - Ф ) = Cos Ф =  \dfrac{\textrm 4}{\textrm 5}

Hence The value of  Cos (-Ф) \dfrac{\textrm 4}{\textrm 5} . Answer

6 0
2 years ago
I'm in trouble. Please solve this two questions!! ​
melomori [17]

Answer:

.........................

4 0
3 years ago
Read 2 more answers
Can you help me please
leonid [27]

Answer

3

Step-by-step explanation:

(4-1)^2+(8-8)^2=9

square root of 9 is 3

8 0
3 years ago
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