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
icang [17]
3 years ago
8

Which of the following is equal to

Mathematics
1 answer:
Tanzania [10]3 years ago
8 0

Answer:  2x^3-2x^2-13x+3

======================================================

Work Shown:

I'm assuming you meant to say (x - 3)(2x^2 + 4x - 1)

Let y = x-3

So,

(x - 3)(2x^2 + 4x - 1)\\\\y(2x^2 + 4x - 1)\\\\y2x^2 + y4x - y\\\\2x^2(y) + 4x(y) - (y)\\\\2x^2(x-3) + 4x(x-3) - (x-3)\\\\2x^3-6x^2 + 4x^2-12x - x+3\\\\2x^3-2x^2-13x+3\\\\

The basic idea is to use the distribution rule (line 3 and line 6) and then combine like terms.

You might be interested in
Help and hurryyy plzz
noname [10]
Help with what i don’t see a pic
4 0
3 years ago
In a triathlon, Jenny swam for 1 hour, biked for 1.75 hours, and ran for 1 hour. Her average biking speed was 2 times her averag
expeople1 [14]

Answer:

28r + 8r + r = 55

Step-by-step explanation:

Some values you know (given or calculated) and some things you do not know.

             RATE         TIME         DISTANCE

BIKE          2*8r         1.75

RUN           8r

SWIM           r            1

Total                                     55

Give a variable to unknown running speed and fill in everything.

             RATE         TIME         DISTANCE

BIKE          16r         1.75           28r        

RUN           8r            t            8rt

SWIM           r            1             r

Total                                     55

Notice some trouble? WHY? I missed seeing the "ran for one hour". the variable t is KNOWN! This will be corrected here:

             RATE         TIME         DISTANCE

BIKE          16r         1.75           28r        

RUN           8r            1            8r

SWIM           r            1             r

Total                                     55

Calculations used to fill out the graph:

Then her running speed was 8r,

and her biking speed was 2*(8r) = 16r.

Swimming for 1    hour, Jenny covered the distance of 1*r = r kilometers.

Biking   for 1.75 hour, Jenny covered the distance of 1.75*16r = 28r kilometers.

Running  for 1    hour, Jenny covered the distance of 1*2r = 8r kilometers.

Everything is filled and looks good. There is a sum of distances in just the one single variable, r.

Solve for r, and this is the swimming speed.

28r + 8r + r = 55

4 0
3 years ago
I need help with understanding how to convert between systems​
cluponka [151]

Answer:

6) - (7m - 4) A. [10m + (-7m)] + [(-6) + 4] B. (10m + 7m) + [(-6) + (-4)] C. [(-10m) + (-7m)] + (6 + 4) D. [10m + (-7m)] + [6 + (-4)]

Step-by-step explanation:

6 0
3 years ago
In what year did Connecticut become a separate colony from Massachusetts?
seraphim [82]
I’m pretty sure it’s 1640 or A.
8 0
3 years ago
Read 2 more answers
How do I solve this problem
MAVERICK [17]

Answer:

It would take 1 more mile if he took route Street A and then Street B rather than just Street C.

Step-by-step explanation:

Pythagorean Theorem: a² + b² = c²

We use the Pythagorean Theorem to find the length of Street C:

2² + 1.5² = c²

c = √6.25

c = 2.5

Now we find how much longer route A and B is compared to C:

3.5 - (2 + 1.5) = 3.5 - 2.5 = 1

5 0
4 years ago
Other questions:
  • The calorie density D, in calories per ounce, of a food that contains c calories and weighs w ounces is given by the formula D=c
    15·2 answers
  • The prime factorization of 60 is the same as the prime factorization of 30 except that the prime factorization of 60 has one mor
    11·1 answer
  • SHOW YOUR WORK!!! Marking best answer as brainliest :))
    10·1 answer
  • A tortoise is walking in the desert. It walks at a speed of 3 meters per minute for 37.5 meters.
    11·1 answer
  • My 8 year old came to me for help with his maths homework but I had never come across this method. At his age I used the bus sto
    12·1 answer
  • A horseback rider travels 2 miles in 12 minutes. At this speed, how many minutes does it take to travel 6.5 miles
    14·2 answers
  • a line represented by y = 3x − 1 and a line perpendicular to it intersect at r(1, 2). what is the equation of the perpendicular
    9·1 answer
  • What effect does eliminating the highest value, 180, from the data set have on the mean and the
    15·2 answers
  • Hi i would like sum help :)) please help for a brainlist !!!!!!!!!!!!!
    8·1 answer
  • Simplify the following expression to its simplest form
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!