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3 years ago

13

-6k + 7k what's the answer

2 answers:

Naddik [55]3 years ago

6 0

After adding like terms the answer is: 1k

lesya [120]3 years ago

5 0

The answer is k!!!!!!!!

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Which binomial is a factor of the polynomial? x2 - 6x + 9 A) (x - 9) B) (x + 3) C) (x + 9) D) (x - 3)

ICE Princess25 [194]

$x^2-6x+9=x^2-3x-3x+9=x(x-3)-3(x-3)=(x-3)(x-3)\\\\Answer:\ \boxed{D)\ (x-3)}$

8 0

3 years ago

2x-3/x devided by 7/x^2

Sergio039 [100]

Answer:

$\frac{2x^2-3x}{7}$

Step-by-step explanation:

$\frac{2x-3}{x}$ ÷ $\frac{7}{x^2}$

=> $\frac{2x-3}{x}$ × $\frac{x^2}{7}$

=> $\frac{2x-3}{7}$ × $\frac{x^2}{x}$

=> $\frac{x(2x-3)}{7}$

=> $\frac{2x^2-3x}{7}$

4 0

3 years ago

A triangle has area 42 cm squared find the height in centimeters if it is 5 cm shorter than the base

topjm [15]

<span>Base = 12cm
Height = 7cm</span>

3 0

3 years ago

Find the perimeter of the triangle with vertices A(negative 2,2,3), B(4,negative 4,3), and C(7,6,4).

gayaneshka [121]

Answer:

$P\approx 28.872\,\text{units}$

Step-by-step explanation:

We are given coordinates of each of the vertices of the triangle ABC, hence we can use the distance formula to find the lengths of each of the side.

the distance formula is generally written as:

$r = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2+(z_1-z_2)^2}$

for the side AB: A(-2,2,3) and B(4,-4,3)

$AB = \sqrt{(-2-4)^2+(2-(-4))^2+(3-3)^2}$

$AB = \sqrt{(-6)^2+(6)^2+(3-3)^2}$

$AB = \sqrt{72}$

for the side BC: B(4,-4,3) and C(7,6,4)

$BC = \sqrt{(4-7)^2+((-4)-6)^2+(3-4)^2}$

$BC = \sqrt{110}$

for the side CA: C(7,6,4) and A(-2,2,3)

$CA = \sqrt{(7-(-2))^2+(6-2)^2+(4-3)^2}$

$CA = \sqrt{98}$

Now we all the sidelengths:

to find the perimeter we need to just sum the three side lengths:

$P = AB + BC + CA$

$P = \sqrt{72} + \sqrt{110} + \sqrt{98}$

$P\approx 28.872\,\text{units}$

this is the perimeter of triangle ABC

6 0

3 years ago

Evaluate the following f(-2)+f(-3)=

8090 [49]

It would be =-5f
Hope this helps

7 0

3 years ago