All categories

3 years ago

Simplify -4x+2x2-x2+5-3x

Mathematics

2 answers:

AfilCa [17]3 years ago

4 0

Answer:

$x^{2} -7x+5$

Step-by-step explanation:

First, organize it by highest degrees: $2x^{2} -x^{2} -4x-3x+5$

Then combine like terms: $x^{2} -7x+5$

Serga [27]3 years ago

3 0

Answer:

9 - 7x - x²

Step-by-step explanation:

-4x+2x2-x²+5-3x = -4x-3x+2x2+5-x²

I arranged the like terms together so it is easier to do the calculations.

-4x-3x+2x2+5-x² = -7x+4+5-x²

Simplify.

-7x+4+5-x² = 9-7x-x²

You might be interested in

Paul's bathtub is clogged. He has to empty 30 liters of water by hand. Paul has a 3- liter, a 4- liter, and a 5 liter bucket. Of

notka56 [123]

3 and 4 + 3 and 4 + 3 and 4 + 4 and 5 = 30

5 0

3 years ago

If the square root of 6 is the geometric mean between 4 and another number, then the number is?

Ilya [14]

The answer would end up coming out to be C.24

7 0

3 years ago

Selma went shopping and bought identical sweaters for each of 3 friends. If she spent $42, what was the cost of each sweater? In

faust18 [17]

Answer:

14 dollars

Step-by-step explanation:

42 / 3 = x amount of dollars

14 = x

so every one sweater costs 14 dollars

7 0

3 years ago

The student body of 205 wants to elect a president, vice president, and a secretary. Is an example of permutation or combination

Veseljchak [2.6K]

Answer:

Combination

Step-by-step explanation:

Permutation is likely used more for lists/ordered things.

Combination is used more for groups.

Since we are trying to elect a group of people (president, vice president, and secretary) out of 205 students, we use combination.

8 0

3 years ago

What is the volume of the trapezoidal prism with a height of 10 cm, base lengths of 3 and 4 cm, base height of 2 cm?

Bad White [126]

Given:

Height of a trapezoidal prism = 10 cm

Base lengths are 3 and 4 cm.

Base height = 2 cm

To find:

The volume of the trapezoidal prism.

Solution:

Base area of a trapezoidal prism

$B=\dfrac{a+b}{2}\times h$

Where, a,b are base lengths and h is the base height.

Putting $a=3,b=4,h=2$ , we get

$B=\dfrac{3+4}{2}\times 2$

$B=7$

The volume of a trapezoidal prism is:

$V=Bh$

Where, B is the base area and h is the height of the prism.

Putting $B=7,h=10$ , we get

$V=7\times 10$

$V=70$

Therefore, the volume of the trapezoidal prism is 70 cubic cm.

8 0

3 years ago