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3 years ago

Combine like terms: A.4x – 3y + 2x + y b. -2x + 3y – 4y + 5y

Mathematics

1 answer:

TiliK225 [7]3 years ago

6 0

Answer:

a. 6x-2y

b. -2x+4y

Step-by-step explanation:

hope this helps

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The price of a video game was reduced from $70.00 to $40.00. By what percentage was the price of the video game reduced? Justify

oksano4ka [1.4K]

42.86% I’m for sure it’s the correct answer

6 0

3 years ago

Read 2 more answers

I need help please! If you can’t see the picture well I can’t just type it out for ya :-)

Nady [450]

Answer:

y = 3/2x

Step-by-step explanation:

Now, second limit first.

If 2 lines are parallel, they have the same slope. That narrows it down to the last 2 options.

(2,3) means y must be 3 when x is 2. Let's try number 3.

3/2 * x

3/2 * 2

It fits!

8 0

3 years ago

Please help me with this question

Licemer1 [7]

Answer:

$cos(x-\frac{3\pi }{2} )= \frac{-3}{4} cos(x)$

Step-by-step explanation:

Lets remember the following expression:

cos(x-a)= cos(x)*cos(a)+sin(x)*sin(a)

if a= -3 pi /2 then:

cos(x-3 pi/2)= cos(x)*cos(3pi/2) + sin(x)*sin(3pi/2)

Since cos (3pi/2) is located exactly at 'y' axis, its value=0

Moreover sin(3pi/2)= -1 because, that angle is located at 'y' axis, negative side

cos(x-3pi/2)= -sin(x)

But, we can simplify a little more since we now that tan(x)=3/4

That means that sin(x)/cos(x)= 3/4, from that expression we isolate sin(x) and we obtain that sin(x)=cos(x) * 3/4

Using the above conclusion we have that

cos(x-3pi/2)= -cos(x)*3/4

5 0

3 years ago

Simplify the expression the root of negative sixteen all over the quantity of three minus three i plus the quantity of one minus

viva [34]

I think the question is simplify

$\dfrac{\sqrt{-16}}{3 - 3i} + 1-2i$

$= \dfrac{4\sqrt{-1}}{3(1-i)}+ 1-2i$

$= \dfrac{4}{3}\dfrac{i}{1-i} \cdot \dfrac{1+i}{1+i} + 1-2i$

$= \dfrac{4}{3} \dfrac{i-1}{2} + 1-2i$

$= \dfrac{2}{3} i - \dfrac{2}{3} + 1-2i$

$= \dfrac{1}{3} - \dfrac{4}{3} i$

Answer: (1/3) - (4/3)i

I might be getting the question wrong. It might be

$\dfrac{\sqrt{-16}}{3 - 3i + (1-2i)}$

Let's do this one too.

$= \dfrac{4i}{4 - 5i} \cdot \dfrac{4+5i}{4+5i}$

$= \dfrac{16i - 20}{4^2 + 5^2}$

$=-\dfrac{20}{41} + \dfrac{16}{41} i$

4 0

3 years ago

Which of these three expressions are equivalent?

grin007 [14]

Answer:

is this good?? i mean is it correct

8 0

3 years ago