1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aliina [53]
3 years ago
8

Which of the following expressions are polynomials?

Mathematics
1 answer:
AlekseyPX3 years ago
5 0

Answer:

1,3 and 5

Step-by-step explanation:

1) -2(7x + 1) − 5(3x2 + 3x + 2)

= -14x - 2 - 15x^2 - 15x - 10

= -15x^2 - 29x - 12

2) (5x2 − 10x + 8) − (10x2 + 19x + 20)

= 5x^2 - 10x + 8 - 10x^2 - 19x - 20

= -5x^2 -29x - 12

3) (-7x2 − 21x + 13) − (8x2 + 8x + 25)

= -7x^2 - 21x + 13 - 8x^2 - 8x - 25

= -15x^2 - 29x - 12

4) (-19x2 − 4x - 7) + (4x2 + 25x − 5)

= -15x^2 + 21x - 12

5) (-17x2 + 2x − 3) + (2x2 − 31x − 9)

= -15x^2 -29x - 12

6) -2(4x − 15) − 3(5x2 + 7x + 6)

= -8x + 30 - 15x^2 - 21x - 18

= -15x^2 - 29x + 12

You might be interested in
True or false some drugs like Tylenol or available over-the-counter because they are safe in any dose
MArishka [77]
I am gonna say false....because it is possible to overdose on tylenol...so ANY dose is not safe
6 0
3 years ago
Read 2 more answers
Name the property of a(b+(-b))=(b+(-b))a
Marizza181 [45]

The property of a(b+(-b))=(b+(-b))a is called as Commutative Property of Multiplication.

The Commutative Property in mathematics is a rule that allows interchange the order of terms or factors without any change in the end result.

In multiplication, we can interchange the factors without affecting the end result of multiplication. For example, 2 x 3 = 3 x 2 = 6

In addition, we can interchange the terms without affecting the summation result. For example, 2+3 = 3+2 = 5

But Commutative Property does not apply to subtraction or division.

For example, 2-3 != 3-2

or, 2/3 != 3/2

Hence the answer to the question is Commutative Property of Multiplication.

To know more about "Commutative" click here

brainly.com/question/28747013

#SPJ1

4 0
1 year ago
Find the length of AB
ryzh [129]

Answer:

use the formula given in the pic and you will get the answer

3 0
4 years ago
The height of the sail on a boat is 7 feet less than 3 times the length of its base. If the
xxTIMURxx [149]

Answer:

Base=8 feet

Height=17 feet

Step-by-step explanation:

Let

Base=x

Height=3x-7

Area=68 square feet

Area of the sail boat=1/2 * base * height

68 = 1/2 * x * (3x-7)

Cross product

68 * 2 =(1) * (x) * (3x-7)

136 = 3x^2 - 7x

3x^2 - 7x - 136=0

Using quadratic formula

x= -b +or- √b^2 - 4ac / 2a

= -(-7) +or- √(-7)^2 - (4)(3)(-136) / 2(3)

= 7 +or- √49 - (-1632) / 6

= 7 +or- √49+1632) / 6

= 7 +or- √1681 / 6

=7 +or- 41 /6

x= 7+41 / 6 or 7-41 / 6

=48/6 or -34/6

=8 or -17/3

Answer:

Step-by-step explanation:

Let

Base=x

Height=3x-7

Area=68 square feet

Area of the sail boat=1/2 * base * height

68 = 1/2 * x * (3x-7)

Cross product

68 * 2 =(1) * (x) * (3x-7)

136 = 3x^2 - 7x

3x^2 - 7x - 136=0

Base of the boat can't be a negative value

Therefore,

Base = x = 8 feet

Height= 3x-7

=3(8)-7

=24-7

=17 feet

3 0
3 years ago
Please help quickly
3241004551 [841]

Answer:

Step-by-step explanation:

The graph of f(x) becomes the graph of g(x) if the former is translated UP 18 units.  k = 18.

The graph of f(x) becomes the graph of g(x) if the graph of f(x) is translated 6 units to the left.  k = 6

7 0
2 years ago
Other questions:
  • and run 6 Laps on the track she runs a total of 1 mile or 5,280write and solve an equation to find the distance in feet that she
    9·1 answer
  • In a game, Janeesa started with 0 points. She then earned 50 points, lost 80 points and earned 10 points. Which number line show
    5·1 answer
  • Hi, I have homework in math subject question 7,8are homework
    12·1 answer
  • Express the following the number indecimal<br>form - 25<br>36​
    13·1 answer
  • Which ratio is NOT proportional to 16/4?<br><br> 1. 4/1<br> 2. 8/2<br> 3. 32/8<br> 4. 1/4
    9·1 answer
  • Graph the line.please help
    10·1 answer
  • Please help i rlly need help
    5·1 answer
  • Plzzzz help !!!! ill mark you brainliest
    5·1 answer
  • If t-5=r+6 solve for t
    15·1 answer
  • The cube of twice a number.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!