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
MAXImum [283]
2 years ago
13

Multiply: (5x−1)(5x+4)

Mathematics
2 answers:
Olegator [25]2 years ago
6 0
Answer: C) 25x^2 + 15x - 4

Step-by-Step Explanation:

To open double brackets we have to multiply each term in the first bracket with each term in the second bracket.

Therefore,
=> (5x - 1)(5x + 4)
= 5x * 5x + 5x * 4 - 1 * 5x - 1 * 4
= 25x^2 + 20x - 5x - 4
=> 25x^2 + 15x - 4
inn [45]2 years ago
4 0

Answer: 25x^2+15x-4

Step-by-step explanation:

Multply 5x by the other 5x

25x^2

Multiply 5x by 4

20x

Multiply -1 by 5x

-5x

Multiply -1 by 4

-4

Add them together

25x^2+20x-5x-4

Combine like terms

20x-5x=15x

25x^2+15x-4

You might be interested in
Plz help i serouisly need help I will reward with one hundred points
Mekhanik [1.2K]

Percent increase is

100(new/old - 1)

Here that's

100(26/22 - 1) = 200/11 ≈ 18.2

Answer: third choice

6 0
3 years ago
Read 2 more answers
Regard y as the independent variable and x as the dependent variable and use implicit differentiation to find dx/dy. x5y2 − x4y
il63 [147K]

Answer:

dx/dy =  (x^4 -  2x^5y -  6xy^2) /  (5x^4y^2 - 4x^3y +  2y^3).

Step-by-step explanation:

x^5y^2 − x^4y + 2xy^3 = 0

Applying the Product and Chain Rules:

y^2*5x^4*dx/dy + 2y*x^5 - (y*4x^3*dx/dy + x^4) + (y^3* 2*dx/dy + 3y^2*2x) =0

Separating the terms with derivatives:

y^2*5x^4*dx/dy - y*4x^3*dx/dy + y^3* 2*dx/dy =  x^4 -  2y*x^5 -  3y^2*2x

dx/dy =  (x^4 -  2x^5y -  6xy^2) /  (5x^4y^2 - 4x^3y +  2y^3)

7 0
3 years ago
Read 2 more answers
A bad contains 8 black,3red and 9 white balls. If 3 balls are drawn at random, find the probability that none is red
LenKa [72]

Argument

You have a total of 8 + 9 + 3 balls = 20

The first ball is 17/20         Probability that no ball drawn is red the first time

The Second ball is 16/19   Probability that no ball drawn is red the 2nd time

The third ball is 15/18        Probability that no ball drawn is red the 3rd time

Answer

Total Probability = 17/20 * 16/19 * 15/18 = 34/57

My calculator figures out fractions. You can do this just as easily with decimals.

0.85 * 0.8421 * 0.8333333 = 0.5964

34/57 = 0.5965  which is close enough.

If you have choices, choose the one that coincides with my answer. Otherwise use the decimal value.

4 0
3 years ago
What type of angle is each angle in this figure?
Naya [18.7K]
J= obtuse
K=right
L=acute
M=acute
8 0
2 years ago
Find the area of the parallelogram.
Crazy boy [7]
A= base x height = 3x4 = 12 ft
4 0
3 years ago
Read 2 more answers
Other questions:
  • What would the next figure in the geometric pattern below be?
    11·1 answer
  • Jill parks the car and gets a ticket for 7 hours.
    15·1 answer
  • Please help me I can’t figure it out
    15·1 answer
  • You are walking down a road seeking treasure the real branches of into 3 paths a guard stands in each path you only know that on
    13·1 answer
  • A cafeteria used 5 gallons of milk in preparing lunch. ow many 1-quart containers of milk did the cafeteria use?
    12·2 answers
  • One person can do a certain job in six days, a second person can do the same job in two days, and a third person can do this job
    10·1 answer
  • Use the Pythagorean Theorem to find the value of x
    7·1 answer
  • Find the value of x.<br> (4x + 20)
    15·2 answers
  • Question 6. Solve -15 = x - 3
    13·1 answer
  • Which graph shows a function whose inverse is also a function?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!