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
ollegr [7]
3 years ago
12

What is the product? (7x²) (2x + 5)(x² - 4x-9)

Mathematics
1 answer:
sesenic [268]3 years ago
5 0
14x^5 - 21x^4 - 266x^3 - 315x^2
You might be interested in
Five pairs of socks are in a drawer. Three pairs
Hitman42 [59]

Answer: 40% chance

Sample space: 3 white 2 red, 5 pairs

2/5 probability, as a percent would be 40% chance

3 0
3 years ago
I'll mark brainly for who ever answers ​
kirza4 [7]

Answer:

B

Step-by-step explanation:

Let the width be x, and the length be y

xy = 50

y = 2x

2x^2 = 50

x^2 = 25

x = 5

y = 10

3*8 = 24

7 0
3 years ago
Read 2 more answers
How to solve systems of linear equations
Mama L [17]

Answer:

In mathematics and linear algebra, a system of linear equations, also known as a linear system of equations or simply a linear system, is a set of linear equations (that is, a system of equations in which each equation is first degree).

An example of a linear system of equations would be the following:

\left \{ {{4x+3y=18} \atop {5x-6y=3}} \right.

Methods of solving systems of linear equations

Solve a system of linear equations is to find all their solutions.

The methods of equalization, substitution and reduction consist of finding and solving, for each of the unknowns, an equation with that unknown and with no other.

Substitution method

The substitution method consists in clearing one of the equations with any unknown, preferably the one with the lowest coefficient, and then substitute it in another equation for its value.

In case of systems with more than two unknowns, the selected one must be replaced by its equivalent value in all the equations except the one we have cleared it. At that moment, we will have a system with an equation and an unknown less than the initial one, in which we can continue applying this method repeatedly.

Equalization method

The equalization method can be understood as a particular case of the substitution method in which the same incognita is solved in two equations and then the right part of both equations are equated with each other.

Reduction method

This method is mostly used in linear systems, with few cases in which it is used to solve non-linear systems. The procedure, designed for systems with two equations and unknowns, consists of transforming one of the equations (generally, by products), so that we obtain two equations in which the same unknown appears with the same coefficient and different sign. Next, both equations are added, thus producing the reduction or cancellation of said unknown, thus obtaining an equation with a single unknown, where the resolution method is simple.

7 0
4 years ago
6. Solve the problem. A carousel has a radius of 18 feet and takes 31
Darya [45]

Answer:

v = 3.64 ft/s

Step-by-step explanation:

Given that,

Radius of a carousel, r = 18 feet

It takes 31 seconds to complete revolution.

We need to find the linear speed of the carousel at its outside edge. Distance covered is equal to the circumference of the circle.

d = 2πr

d = 2π × 18 = 113.09 feet

Let v is the linear speed. It can be given by :

v=\dfrac{D}{t}\\\\v=\dfrac{113.09}{31}\\\\v=3.64\ ft/s

So, the linear speed of the carousel is 3.64 ft/s.

7 0
3 years ago
For this tangent line approximation question, my answer is D. 4. Is my work correct?
tamaranim1 [39]
Yes choice D is the correct answer. Nice job.

If you wanted, you can simplify the linear approximation L(x) 
L(x) = f(a) + (x-a)*f'(a)
L(x) = f(-0.5) + (x-(-0.5))*f'(-0.5)
L(x) = 2 + (x+0.5)*4
L(x) = 2+4x+2
L(x) = 4x+4

Then plug in x = 0
L(x) = 4x+4
L(0) = 4(0)+4
L(0) = 4

But your method is a shorter route.
3 0
4 years ago
Other questions:
  • Need help asap! picture included!
    10·2 answers
  • Find the suface area of the regular pyrimid 15, 12, r 7.5
    10·1 answer
  • What is the absolute value of five
    10·2 answers
  • PLEASE HELP ME!!! WILL GIVE BRAINLIEST! PLEASE IT SHOULD BE EASY FOR SOMEONE WHO ISNT SUPER SICK!!
    8·2 answers
  • Pls help me i dont get it :(
    14·2 answers
  • Find all the zeros of the polynomial function p(x) = x3 – 5x2 + 33x – 29
    10·1 answer
  • A crew of highway workers paved 1/3 mile in 1/4 of an hour. If they work at the same rate, how much will they pave in one hour??
    14·2 answers
  • What is the length of the side opposite D?
    7·1 answer
  • Given the relation y = -3x + 2, if the input is -4, what is the output?
    10·1 answer
  • Who ever gets this right will get a brainlest
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!