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
Sergio [31]
3 years ago
7

(4x-5) (4x+5) Expand and simplify

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
3 0

Step-by-step explanation:

(4x-5)(4x+5)

multiply each

4x×4x=16x^2

4x×5=20x

-5×4x= - 20x

-5×5= -25

16x^2+20x-20x-25

16x^2-25

You might be interested in
Please help i don’t know how to find the slope
lilavasa [31]
Y= mx+b is the formula for writing and equation for slope.


M= slope
B= y-intercept

You replace the m and b with the info given to you in the problem.

Answer: y = -3/4x -6
6 0
3 years ago
A six foot tall man casts a shadow that is 10 feet long. if a tree next to the man casts a 25 foot shadow. how tall is the tree?
OLga [1]

Answer: Im not completely sure but my best guess is 21. the tree is 21 feet tall

Step-by-step explanation:

4 0
3 years ago
Moira said, "If a right triangle has one side with a length of 3 units and one side with a length
Dima020 [189]

If the two sides with length 3 and 4 are the two legs, then the missing side, i.e. the hypotenuse, is indeed 5.

But it could also be the case that 4 is the hypotenuse and 3 is one of the legs. In this case, the missing side is the other leg, so we calculate it using

\sqrt{4^2-3^2}=\sqrt{16-9}=\sqrt{7}

So, a right triangle with legs \sqrt{7} and 3 has an hypotenuse of 4.

8 0
3 years ago
Simplify √9 x 3√27 please answer
irakobra [83]

Answer:

I got 27\sqrt{3} which is 46.76537.... in decimal form.

Step-by-step explanation:

4 0
3 years ago
Which ordered pair is a solution of the linear system: x+2y=-8 and
andrew-mc [135]

Answer:

option A

A(-2,-3)

Step-by-step explanation:

make y subject of formula

x+2y=-8

2y=-8-x

y=(-8-x)/2

y=-4-x/2

when x=-2

y=-4-(-2)/2

=-4-(-1)

=-4+1

=-3

(-2,-3) is an ordered pair

5 0
3 years ago
Other questions:
  • Jan Quint earn 11.00 an hour at her job and is entitled to time and a half for overtime and double time on holidays last week sh
    15·1 answer
  • 1). Write 658.129 in expanded form 2). Write <,>,or = to make the statement true 2929.87 ? 2929.087. 3). Round 8.61 to the
    15·2 answers
  • If f(x) = 2x^2 - x, find f(-3).
    13·2 answers
  • 9 times as many as 4 is_
    11·1 answer
  • If x = -2, then x 2 - 7x + 10 equals
    15·2 answers
  • if the length of the container is half of a foot longer than it’s width what expression represents the height of the container
    10·1 answer
  • Two less than three times a number is equal to 19. What is the number?
    11·1 answer
  • Justin uses 2/3
    8·1 answer
  • Express your answer as a decimal.<br><br> 3÷2=
    12·2 answers
  • What if the answer is wrong
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!