All categories

3 years ago

Simplify: (3x – 1) (x3 + 2x + 1)

Mathematics

2 answers:

Naddik [55]3 years ago

7 0

Answer:

$3x^4-x^3+6x^2+x-1$

Step-by-step explanation:

Distribute parentheses:

$3xx^3 + 3x * 2x + 3x * 1 + (-1)x^3 + (-1) * 2x + (-1) * 1$

Add minus and plus rules:

$3x^3x + 3 * 2xx + 3 * 1 * x - 1 * x^3 - 1 * 2x - 1 * 1$

Simplify:

$3x^4-x^3+6x^2+x-1$

pshichka [43]3 years ago

5 0

Answer:

B: 3x4-x3+6x2+x-1

You might be interested in

Sasha is making a quilt. Her pattern requires that 1/4 of the pieces of cloth be green. She has 188 pieces of green cloth. If sh

butalik [34]

Answer:

The answer should be 752

Step-by-step explanation:

You turn 1/4 into a decimal and you get 0.25

Divide 188 by .25 and you should get that answer

6 0

3 years ago

3 square root 4 • square root 3

Anton [14]

Answer:

6 square root 3

Step-by-step explanation:

3 square root 4 .square root 3= 6 square root 3

8 0

2 years ago

The following dot plot represents the litter sizes of two random samples of dogs: labrador retrievers and chihuahuas. Based on t

Zarrin [17]

Answer:

103 msand is the most important thing to be aware of and that is 33454 for the test and of you I a 83838

Step-by-step explanation:

N is a good thing to do if a ebay producs is not 30th and I have no doubt about that earning a lot of vid I have trash a to out test future I it speak spanish or any android of or for android phone that is a great idea to get realistic and get

7 0

2 years ago

Read 2 more answers

Adam drew two same size rectangles and divided them into the same number of equal parts. He shaded 1/3 of one rectangle and 1/4

MArishka [77]

he divided each rectangle in 12 identical parts

for the first rectangle he shaded 1/3 of 12 = 4 parts

for the second rectangle he shaded 1/4 of 12= 3 parts

so 12= 3*4 leads to a minimum of 12 parts

6 0

3 years ago

The object on the right is made from a square-based pyramid joined to a cuboid.

spayn [35]

Answer:

Density of steel = 80.73 gm/ $cm^3$

Step-by-step explanation:

The figure is made up of cuboid and square pyramid.

Height of cuboid, h = 9 cm

Length of cuboid, l = 6 cm

Width of cuboid, w = 6 cm

Volume of cuboid is given by the formula:

$V_{Cuboid} = l \times w \times h$

$V_{Cuboid} = 6 \times 6 \times 9\\\Rightarrow V_{Cuboid} = 324\ cm^3$

Density of Wood , $D_{Cuboid}$ = 0.68g/ $cm^3$

We know that formula of Density is:

$Density = \dfrac{Weight}{Volume}$

$D_{Cuboid} = \dfrac{W_{Cuboid}}{V_{Cuboid}}\\\Rightarrow W_{Cuboid} = V_{Cuboid} \times D_{Cuboid}$

Putting the values:

$W_{Cuboid} = 324 \times 0.68 = 220.32\ gm$

Total weight = $W_{Cuboid} + W_{Pyramid}$

970 = 220.32 $+ W_{Pyramid}$

$W_{Pyramid}$ = 749.68 gm

Volume of pyramid is given as:

$V_{Pyramid}= \dfrac{1}{3} \times \text{Area of Base} \times \text{Vertical Height}$

Base is a square with side 6 cm

$V_{Pyramid}= \dfrac{1}{3} \times 6 \times 6 \times (17 -9)\\V_{Pyramid}= 96\ cm^3$

Density of Steel/Pyramid:

$D_{Pyramid} = \dfrac{W_{Pyramid}}{V_{Pyramid}}\\\Rightarrow D_{Pyramid} = \dfrac{749.68}{96}\\\Rightarrow D_{Pyramid} = 80.73\ gm/cm^3$

5 0

3 years ago