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Charra [1.4K]
3 years ago
8

PLEASE HELP ME:

Mathematics
1 answer:
katrin [286]3 years ago
7 0

Answer:

4 miles in 2 hours I think

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Q =3x2+5x-2 R = 2 – x2 S = 2x + 5 Find Q – [R + S] Show all of the steps.
matrenka [14]

Q=3x^2+5x-2\\R=2-x^2\\S=2x+5\\\\Q-[R+S]=(3x^2+5x-2)-[(2-x^2)+(2x+5)]\\\\=(3x^2+5x-2)-(2-x^2+2x+5)\\\\=(3x^2+5x-2)-[-x^2+2x+(2+5)]\\\\=(3x^2+5x-2)-(-x^2+2x+7)\\\\=3x^2+5x-2-(-x^2)-2x-7\\\\=3x^2+5x-2+x^2-2x-7\\\\=(3x^2+x^2)+(5x-2x)+(-2-7)\\\\=\boxed{4x^2+3x-9}

5 0
3 years ago
Help me please tomorrow there is my exam​
emmainna [20.7K]

Answer:

\frac{2y^{3} }{x^{2} - y^{2} }

2y^3 / x^2 - y^2

hope this helps and is right. p.s i really need brainliest :)

if my answer is wrong then I am incredibly sorry!

5 0
2 years ago
2.<br> what do i put im confused and dont know how to do this
Paha777 [63]

Answer:

Step-by-step explanation:

The two dots on the bottom of this figure define the base of a triangle.  If we now use a compass to draw the blue arcs on either side, as shown, the arcs will intersect at two points.  A straight line drawn through these two points will be perpendicular to the base. The triangle will be isosceles and could be (but doesn't have to be) equilateral.

3 0
3 years ago
Help!! I will give pints and brainlest pls!!! <br><br> (No Decimals!)
son4ous [18]

Answer:

2: 0.65

Step-by-step explanation:

8 0
3 years ago
19. Use the unit circle to find the value of tan 315º.<br> Show work pls.
Free_Kalibri [48]

Answer: -1

Step-by-step explanation:

First change tan(315) to:

\frac{\sin(315)}{\cos(315)}

Then evaluate the sine and cosine function. What is the y component of 315 degrees? What is the x component of 315 degrees?

-\frac{\sqrt{2} }{2} /\frac{\sqrt{2} }{2} =-1

7 0
3 years ago
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