3 years ago

If a pair of perpendicular lines are rotated, which is true?

Mathematics

1 answer:

aleksley [76]3 years ago

4 0

It is, " <span>Rotated parallel lines always remain parallel lines."

Hope this helps!
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2. Simplify the following problem using the distributive property: 2x+3y+2(x-y)-3x . Show each step in your calculation. Justify

sergeinik [125]

Multiply everything in the parenthesis by 2.

2x + 3y + 2x - 2y - 3x

Combine like terms.

x + y

Hope this helps!

8 0

3 years ago

Read 2 more answers

Decide whether the equations is a trigonometric function identity, EXPLAIN.

hodyreva [135]

(1) Answer: Identity true

$\cos^2x(1+\tan^2x)=\cos^2x(1+\frac{sin^2x}{cos^2x})=\\= \cos^2x\frac{cos^2x+sin^2x}{cos^2x}=1$

(2) Answer: Identity true

$\sec x \tan x(1-\sin^2x)=\sin x\\\frac{1}{\cos x}\frac{\sin x}{\cos x}(\cos^2x)=\sin x\\\sin x = \sin x$

(3) Answer: Identity true

$\sin^2(\theta)\csc^2(\theta)=\sin^2(\theta)+\cos^2(\theta)\\\sin^2(\theta)\frac{1}{\sin^2(\theta)}=\sin^2(\theta)+\cos^2(\theta)\\1 = 1$

7 0

3 years ago

A taxi company charges $3 for pick-up plus $0.65 for each mile. Select the expressions that represent the cost in dollars for a

alexira [117]

the equation is y=0.65x+3

8 0

4 years ago

Y=-3x - 4 <br> y= 2x + 1

Naily [24]

$\left \{ {{y=-3x-4} \atop {y=2x+1}} \right. \\\\ substitution\ method\\\\
-3x-4=2x+1\ \ \ | subtract\ 2x\\\\
-5x-4=1\ \ \ | add\ 4\\\\
-5x=5\ \ \ | divide\ by\ -5\\\\
x=-1\\\\
y=2x+1=2*(-1)+1=-2+1=-1\\\\
Solution:\\ \left \{ {{y=-1} \atop {x=-1}} \right.$

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3 years ago

Find the product. Tell which strategy you use. 8×604

Ket [755]

4,832 is the answer that I got

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3 years ago