3 years ago

Simplify (3r^2+4) (2r-1).-8r^3+6r^2

1 answer:

5 0

First simpliify
(3r^2+4)(2r-1)=
(3r^2+4)(2r)+(3r^2+4)(-1)=
(6r^3+8r)+(-3r^2-4)=
6r^3+8r-3r^2-4=
put back

6r^3-3r^2+8r-4-8r^3+6r^2=
-2r^3+3r^2+8r-4

You might be interested in

Admission to a county fair is $4.50 per person. The Rodriguez family pays $22.50 for admission to the fair. Which equation can y

Naya [18.7K]

Answer:

5 people

Step-by-step explanation:

22.50 ÷ 4.50 = 5

7 0

3 years ago

Read 2 more answers

Ms. Bell’s kindergarten class has 20 students. Every morning, she draws the name of one student at random from a fishbowl. That

patriot [66]

I’m pretty sure it would be 0.25

3 0

3 years ago

Can someone please help me i dont understand this

Juliette [100K]

Answer:

(-2,12)(-1,10)(0,8)(1,6)

Step-by-step explanation:

It has a constant slope of -2/1 *y2-y1/x2-x1*

4 0

3 years ago

6) -2 + 3n = 4n + 2

vladimir1956 [14]

Answer: n=-4

Step-by-step explanation:

5 0

4 years ago

The diargram show a right show a right -angle and a parallelogram the area of the parallelogram is times the area of the traiang

Vesnalui [34]

Question:

The diagram shows a right -angle and a parallelogram. The area of the parallelogram is 5 times the area of the triangle. The perpendicular height of the parallelogram is h. Find h

Answer:

$h =12cm$

Step-by-step explanation:

Given

Triangle

$Base = 9cm$

$Height = 16cm$

Parallelogram

$Base = 30cm$

$Height = h$

Calculate the area of the triangle

$Area = 0.5 * Base * Height$

$Area = 0.5 * 9cm * 16cm$

$Area = 72cm^2$

When multiplied by 5, gives the area of the parallelogram.

So:

The area of Parallelogram is:

$Area = Base * Height$

$Area = 30cm * h$

This gives:

$30cm * h = 72cm^2 * 5$

Make h the subject

$h = \frac{72cm^2 * 5}{30cm}$

$h = \frac{72cm^2}{6cm}$

$h =12cm$

4 0

3 years ago