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3 years ago

15

3x+y=W Solve for X....

1 answer:

Andre45 [30]3 years ago

6 0

Answer:

x = (W - y)/3

Step-by-step explanation:

3x+y=W

3x = W - y

x = (W - y)/3

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What is the justification for step 1

solniwko [45]

Answer:

what are you talking about??????

6 0

3 years ago

What's the property to (x/y)^3=x^3/y^3

Sphinxa [80]

Answer:

Power of a quotient property

Step-by-step explanation:

It is power of a quotient property, when you have different bases, whose quotient(division) is raised to the same power, it is equal to dividing, each base raised to same power.

Here, x and y are different bases and 3 is the common power to both of them.

In general for any power, say m :

$(\frac{x}{y} )^{m} = \frac{x^{m} }{y^{m}}$

Because, $(\frac{x}{y} )^{m} = \frac{x}{y} \times \frac{x}{y} \times\frac{x}{y}.... m times$

And, $(\frac{x}{y} )^{3} = \frac{x}{y} \times \frac{x}{y} \times\frac{x}{y}$

i.e $(\frac{x}{y} )^{3} = \frac{x^{3} }{y^{3}}$

7 0

3 years ago

Calculate cos(480°) and sin(480°).

hram777 [196]

Answer:

$\cos(480^\circ)=-\dfrac{1}{2}$

$\sin(480^\circ)=\dfrac{\sqrt{3}}{2}$

Step-by-step explanation:

Calculate the value of trigonometry function.

$\cos(480^\circ)$ and $\sin(480^\circ)$

Split the angle between 0 to 90° using trigonometry formula.

$\Rightarrow \cos(360^\circ+120^\circ)$

$\Rightarrow \cos(120^\circ)$ $\because \cos(360+\theta)=\cos\theta$

$\Rightarrow \cos(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow -\cos(60^\circ)$ $\because \cos(180-\theta)=-\cos\theta$

$\Rightarrow -\dfrac{1}{2}$

Therefore, cos(480°) = -0.5

$\Rightarrow \sin(360^\circ+120^\circ)$

$\Rightarrow \sin(120^\circ)$ $\because \sin(360+\theta)=\sin\theta$

$\Rightarrow \sin(180^\circ-60^\circ)$ $\because 120=180-60$

$\Rightarrow \sin(60^\circ)$ $\because \sin(180-\theta)=\sin\theta$

$\Rightarrow \dfrac{\sqrt{3}}{2}$

Therefore, sin(480°) = 0.866

7 0

3 years ago

Solve for x.<br> 8 + x = -4<br> Answer:

shutvik [7]

Answer:

x = -12

Step-by-step explanation:

Let's solve your equation step-by-step.

8+x=−4

Step 1: Simplify both sides of the equation.

x+8=−4

Step 2: Subtract 8 from both sides.

x+8−8=−4−8

x=−12

7 0

3 years ago

Read 2 more answers

Is 5/10 s simplest form or not

salantis [7]

Solutions

⇒ 5/10
5/10 is not in simplest form

1) The Greatest Common Factor of 5 and 10 is 5
5 ÷ 5 = 1
10 ÷ 5 = 2

2) simplify

5/10 in simplest form is 1/2

5 0

3 years ago

Read 2 more answers