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
maxonik [38]
2 years ago
10

80^2 - 45^2 = a^2 - b^2 ans pls in working, thnx in advance

Mathematics
1 answer:
Kamila [148]2 years ago
4 0

Answer:

{a}^{2}  -  {b}^{2}= {(80)}^{2}  -{(45)}^{2}  \\(a + b)(a - b) = (80 + 45)(80 - 45) \\  = 125 \times 35 = \boxed{ 4375}✓

<h3><u>4375</u> is the right answer.</h3>
You might be interested in
The polar form of this is?
prohojiy [21]

Answer:

2, 120 degrees

Step-by-step explanation:

The first step in finding the polar form is finding the modulus, r

r= sqrt( x^2 + y^2)

r = sqrt( (-1)^2 + sqrt(3)^2)

r = sqrt(1+3)

r= sqrt(4)

r =2


The next step is finding the angle

theta = arctan (y/x)

theta = arctan (sqrt(3)/-1))

theta = arctan (-sqrt(3))

theta = -60


The point (-1, sqrt(3)) is in the 2nd quadrant, but our angle is in the 4th quadrant, so we add 180 degrees

theta = -60 + 180 = 120

theta = 120 degrees

6 0
2 years ago
Evaluate the function.<br> f(x) = –22 – 9x + 20<br> Find f(9)
Alenkasestr [34]

Answer:

f(9)=-22-9(9)+20=-83

Step-by-step explanation:

f(9) means x = 9, Just substitute 9 into the function.

-9(9) = -81

-22-81+20 = -83

8 0
2 years ago
Write an equation that is proportional.
maksim [4K]

Answer:Learn how to write a proportional equation y=kx where k is the so-called "constant of proportionality".

Step-by-step explanation:

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-equations-of-proportional-relationships/v/equations-of-proportional-relationships#:~:text=Learn%20how%20to%20write%20a,called%20%22constant%20of%20proportionality%22.

5 0
3 years ago
6j+8j+(5+5) Use the distributive property
vova2212 [387]

Hello!

Answer:

\boxed{14j+10}

Step-by-step explanation:

Distributive property: →→ a(b+c)=ab+ac

Order of operations stands for:

↓

Parenthesis

Exponent

Multiply

Divide

Add

Subtract

*Left to right*

Please Excuse My Dear Aunt Sally!

First, you remove parenthesis.

6j+8j+5+5

Then, you add by the numbers from left to right.

6+8=14

14j+5+5

5+5=10

<u><em>14j+10 is the final answer.</em></u>

Hope this helps!

Have a nice day! :)

:D

-Charlie

Thanks!

5 0
3 years ago
Give you the brainlest if can just can with me
Komok [63]
This makes no sense but that would be fire
5 0
3 years ago
Read 2 more answers
Other questions:
  • Perpendicular and angle bisector
    8·2 answers
  • Square root of 4 plus 45 over 4 plus 125 over 25
    12·1 answer
  • There are 3 consecutive integers that have a sum of 36. What are the integers?
    9·1 answer
  • You have a coupon for 30% off your dinner. Your total bill was $50. You also need to pay a 7% sales tax and leave a 22% tip. Wit
    5·1 answer
  • $14.37 for 3lb what’s the unit rate
    12·2 answers
  • Find the area of the shaded sector. Leave your answer in terms of pi.
    9·2 answers
  • Is -1/5 the same thing as 1/-5​
    7·2 answers
  • Find the length of RS with endpoints R(4,5) and S(-1, – 4).
    10·1 answer
  • Which of the following could not be the lengths of sides of a right triangle?
    12·1 answer
  • Solve for the variable.<br> 6x-5=12
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!