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3 years ago

Add. (6x^2-2x)+(5x-7)

Mathematics

2 answers:

dolphi86 [110]3 years ago

8 0

Answer:

6x^2 + 3x - 7

Step-by-step explanation:

6x^2 - 2x + 5x -7
6x^2 + 3x -7

it's easy..

Ede4ka [16]3 years ago

3 0

A. 6x^2 + 3x - 7 is the answer

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3 years ago

A 30° 60° 90° triangle is shown below. Find the length of the side labeled y.

bulgar [2K]

Answer:

Part 1) $y=3\ units$

Part 2) The length of the hypotenuse is 6 units

Step-by-step explanation:

Part 1) we know that

In the right triangle of the figure

$sin(60^o)=\frac{y}{2\sqrt{3}}$ ----> by SOH (opposite side divided by the hypotenuse)

solve for y

$y=sin(60^o)2\sqrt{3}$

Remember that

$sin(60^o)=\frac{\sqrt{3}}{2}$

substitute

$y=(\frac{\sqrt{3}}{2})2\sqrt{3}$

$y=3\ units$

Part 2)

Let

h ----> the length of the hypotenuse

we know that

In the right triangle of the figure

$sin(45^o)=\frac{3\sqrt{2}}{h}$ ----> by SOH (opposite side divided by the hypotenuse)

$h=\frac{3\sqrt{2}}{sin(45^o)}$

Remember that

$sin(45^o)=\frac{\sqrt{2}}{2}$

substitute

$h=3\sqrt{2}:\frac{\sqrt{2}}{2}$

$h=6\ units$

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3 years ago

What is x + 3 +2x =x + 3

algol13

X=0 bexause the 3s cancel out and your left with 2x=0 so x=0

8 0

3 years ago

Read 2 more answers