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2 years ago

Figure ZANY is a square. If ZY = 7x - 3 and ZA = 6x, what is the value of x

Mathematics

1 answer:

SpyIntel [72]2 years ago

6 0

7x-3=6x
x=3
..........

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Pls help me with math cinda easy

Lorico [155]

Answer:

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2 years ago

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Simplify 10x - (5x-x)

Alex17521 [72]

Answer:

$\boxed{6x}$

Step-by-step explanation:

$10x - (5x-x)$

Distribute the Negative Sign:

$= 10x + -1 (5x - x)$

$= 10x + -1 ( 5x) + -1 (-x)$

$= 10x + -5x + x$

Combine Like Terms:

$= 10x + -5x + x$

$= (10x + -5x + x)$

$= 6x$

Hope this helped you!

3 0

3 years ago

Solve 7x - 5 = 2 ????????????????

wolverine [178]

7x - 5 = 2
add 5 to both sides
7x - 5+5 = 2+5

7x=7
Divide both sides by 7 to get x by itself
x=1

4 0

3 years ago

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Given the relationship x2 + 3y2 =12, with y > 0 and dx, dt = 2 units/min., find the value of dy, dt at the instant y = 1 unit

matrenka [14]

$\bf x^2+3y^2=12\implies \stackrel{chain~rule}{2x\cfrac{dx}{dt}}+3 \stackrel{chain~rule}{\left(2y\cfrac{dy}{dt}\right)}=0
\\\\\\
2x\cfrac{dx}{dt}+6y\cfrac{dy}{dt}=0
\implies 
6y\cfrac{dy}{dt}=-2x\cfrac{dx}{dt}\implies \cfrac{dy}{dt}=\cfrac{-2x\frac{dx}{dt}}{
6y\frac{dy}{dt}}
\\\\\\
\boxed{\cfrac{dy}{dt}=-\cfrac{x\frac{dx}{dt}}{3y}}\\\\
-------------------------------$

$\bf \textit{now, when y = 1, what is \underline{x}?}\qquad x^2+3y^2=12\implies x^2+3(1)^2=12
\\\\\\
x^2=9\implies x=\sqrt{9}\implies x=3\\\\
-------------------------------\\\\
\begin{cases}
y=1\\
x=3\\
\frac{dx}{dt}=2
\end{cases}\implies \cfrac{dy}{dt}=-\cfrac{3\cdot 2}{3\cdot 1}\implies \cfrac{dy}{dt}=-2$

7 0

2 years ago

Any suggestions or ideas

kirill115 [55]

That will be D good sir

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2 years ago

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