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
qwelly [4]
3 years ago
6

3. Multiply the polynomials (a^2 + 3a – 4) and (2a^2 – a + 5). Simplify the answer. Show your work.

Mathematics
1 answer:
Elza [17]3 years ago
8 0

Answer:

2a^4+5a^3-6a^2+19a-20

Step-by-step explanation:

(a^2+3a-4)(2a^2-a+5)

2a^4-a^3+5a^2+6a^3-3a^2+15a-8a^2+4a-20

2a^4-a^3+6a^3+5a^2-3a^2-8a^2+15a+4a-20

2a^4+5a^3+2a^2-8a^2+19a-20

2a^4+5a^3-6a^2+19a-20

You might be interested in
PLEASE HELP<br><br> solve the following:<br><br> two and two thirds − one and one third
alina1380 [7]

Answer:

2

we know that and means adding so.

from the question

2+2/3-1+1/3

=1+2/3+1/3

=(3+2+1)/3

=6/3

=2

6 0
2 years ago
Please help me with this question <br><br> image attached
Mumz [18]

Answer:  (D) 9

<u>Step-by-step explanation:</u>

This is an isosceles triangle.  Since the legs are congruent, then the base angles are congruent.

9x + 3 = 84

<u>     - 3  </u>  <u>  -3 </u>

9x        = 81

<u>÷9       </u>   <u>÷9 </u>

 x         = 9

8 0
3 years ago
A football is thrown from the stadium. The height of this football can be represented by the polynomial -16t2 +32t + 20, where t
olasank [31]

Answer:

C

Step-by-step explanation:

related equation

-16t^2 + 32t + 20 = 0

-4t^2 + 8t + 5 = 0

Δ/4 = 16 + 20 = 36

t1 = (-4 + 6)/-4 = -1/2

t2 = (-4 - 6)/-4 = 5/2

-16(t+1/2)(t-5/2)

-16(2t+1/2)(2t-5/2)

-4(2t+1)(2t-5)

5 0
3 years ago
A chemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% acid solution. The table show
nasty-shy [4]
The 4-liter acid material was a lower concentration than 40%. Call it 4 liters of x percent acid.

4x+10*40
————— =30
X+10
3 0
4 years ago
Read 2 more answers
Someone please help I don’t understand this please
sdas [7]

The fraction of the image in blue with respect to the <em>entire</em> hexagon is \frac{1}{3}.

<h3>Estimation of the ratio of the shaded region area to the entire area</h3>

Initially we proceed to create auxiliar constructions , represented by red line segments, to re-define the hexagon as a sum of standard figures. According to the figure, we find two types of triangles (type-1 and type-2), and the following relationship between the two types:

A_{1} = A_{2} (1)

Where:

  • A_{1} - Area of a type-1 triangle.
  • A_{2} - Area of a type-2 triangle.

The formulae for the area of the shaded region (A_{s}) and the <em>entire</em> hexagon (A_{h}) are, respectively:

<h3>Shaded region</h3>

A_{s} = 2\cdot A_{1} + 4\cdot A_{2} (2)

<h3>Entire hexagon</h3>

A_{h} = 8\cdot A_{1} + 10\cdot A_{2} (3)

And the fraction of the image in blue is:

\frac{A_{s}}{A_{h}} =  \frac{2\cdot A_{1}+4\cdot A_{2}}{8\cdot A_{1}+10\cdot A_{2}}

\frac{A_{s}}{A_{h}} = \frac{6\cdot A}{18\cdot A}

\frac{A_{s}}{A_{h}} = \frac{1}{3}

The fraction of the image in blue with respect to the <em>entire</em> hexagon is \frac{1}{3}. \blacksquare

To learn more on hexagons, we kindly invite to check this verified question: brainly.com/question/4083236

6 0
3 years ago
Other questions:
  • How do you figure out how many days they will once again be at opposition with one another?
    11·1 answer
  • The distance covered<br>by a car in<br>3x hours is<br>27x3_9x²+3x. Find the rate of the car​
    11·1 answer
  • Please help me answer this in variable terms and constant terms -5.6x + 7 + 24y - 9
    8·1 answer
  • Find, to the nearest degree, the minimum angle between u(x) andv(x) mathmatica
    9·1 answer
  • 3x° 45°<br> 12<br> E<br> The angles are<br> complementary
    14·1 answer
  • What are three different whole numbers whose sum and product are the same
    12·1 answer
  • Determine the perimeter of a rectangle with a length of 2 feet and a width of 6 inches. (Multiple choice)
    9·1 answer
  • Plz help plz help plz help plz help plz help plz help plz help plz help plz help
    5·2 answers
  • A car bought for $13,000 depreciates at 15% per year. Use an exponential function to find the value of the car after 5 years.
    14·1 answer
  • David works at Mc Donald’s, and he made 96.75 for 10 hours of work how much does David earn per hour
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!