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3 years ago

I really need help on this quiz and I have to show work x(8-3x)(x+2)=0

Mathematics

2 answers:

Sedaia [141]3 years ago

4 0

Answer:

The answer is 8/3 I think

valkas [14]3 years ago

4 0

Answer:

-3x^3 + 2x^2 + 16x

Step-by-step explanation:

x(8 - 3x)(x + 2) = 0

(8x - 3x^2)(x + 2) = 0

8x^2 + 16x − 3x^3 − 6x^2

-3x^3 + 2x^2 + 16x

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4 (x+1 ) + 7(x+3) + 6(y +2) =

Korvikt [17]

Answer:

11x + 6y + 37

Step-by-step explanation:

$(4)(x) + (4)(1) + (7)(x) + (7)(3) + (6)(y) + (6)(2)$
$4x + 4 + 7x + 21 + 6y + 12$
$(4x+7x) + (6y) + (4+21+12)$
$11x + 6y + 37$

5 0

2 years ago

-6(2+n) is greater than 72

Hitman42 [59]

Answer:

n > -14

Step-by-step explanation:

Firstly, you use the distributive property;

-12 - 6n > 72

Then, since 12 is negative, you add 12 to both sides;

-12 - 6n > 72

+12 +12

-6n > 84

Then you divide both sides by -6 to get n > -14.

Shoot, hold on; this is an edit; did you mean that 72 is greater than -6(2 + n) or did you accidentally flip the sign in the picture? Hopefully I did what you needed.

5 0

2 years ago

Read 2 more answers

Which ordered pair (a,b) is a solution to the given system of linear equations.

egoroff_w [7]

Answer:

A. (-13,-3)

Step-by-step explanation:

Solve the system of two equations:

$\left\{\begin{array}{l}-2a+3b=14\\a-4b=3\end{array}\right.$

From the second equation:

$a=3+4b$

Substitute it into the first equation:

$-2(3+4b)+3b=14\\ \\-6-8b+3b=14\\ \\-8b+3b=14+6\\ \\-5b=20\\ \\5b=-20\\ \\b=-4$

So,

$a=3+4b=3+4\cdot (-4)=3-16=-13$

The solution is (-13,-4)

6 0

2 years ago

Read 2 more answers

Step 1: 4r +5 = 7

zhannawk [14.2K]

Answer:

1- r=.5

2- x=.5

Step-by-step explanation:

sorry my handwriting is bad

4 0

3 years ago

4. Given directed line segment CD, if point E divides CD three-fourths of the way from C to D, find the coordinates of E, then p

cricket20 [7]

Answer:

Point E is given by $\left ( \frac{3mx_1+4x_0}{7},\frac{3y_1+4y_0}{7} \right )$

Step-by-step explanation:

Let points C and D be $(x_0,y_0),\,(x_1,y_1)$ and let point E divides it in ratio $m:n$ .

Then coordinates of point E are given by $\left ( \frac{mx_1+nx_0}{m+n},\frac{my_1+ny_0}{m+n} \right )$

Put $m:n=3:4$

Point E is given by $\left ( \frac{3mx_1+4x_0}{3+4},\frac{3y_1+4y_0}{3+4} \right )=\left ( \frac{3mx_1+4x_0}{7},\frac{3y_1+4y_0}{7} \right )$

Now plot point E.

Download pptx

3 0

3 years ago