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
Sergio039 [100]
3 years ago
12

HELP!!!‼️‼️⚠️⚠️‼️‼️⚠️⚠️

Mathematics
1 answer:
kicyunya [14]3 years ago
6 0

Answer:

last option

x² + 81 = x² + 20x + 100

Step-by-step explanation:

\sqrt{ {x}^{2} + 81 }   = x + 10 \\

squaring both sides

(\sqrt{ {x}^{2} + 81 }  )^{2} =  {(x + 10) }^{2}   \\ {x}^{2}  + 81   =  {(x + 10)}^{2}

using the identity

(a + b)² = a² + b² + 2ab

for (x + 10) ²

{x}^{2}  + 81   =  {x}^{2}  + 20x + 100

<h3>hence, option D</h3>

You might be interested in
Select the correct answer.
Veronika [31]

Answer:

B

Step-by-step explanation:

let y = 5x - 3

rearrange making x the subject

add 3 to both sides

5x = y + 3 ( divide both sides by 5 )

x = \frac{y+3}{5}

change y back into terms of x, hence

f^{-1}(x) = \frac{x+3}{5} → B


4 0
3 years ago
Square MNPQ has an area of 9 square units. The vertex M is located at (2,3). What is a possible coordinate pair for vertex N?
almond37 [142]

Answer:

(2,0)

Step-by-step explanation:

7 0
3 years ago
Find the position function of a particle moving along a coordinate line that satisfies the given conditions. 2sint-cost
dimulka [17.4K]

Answer:

the position of a particle moving at a coordinate say(y) will satisfy the given conditions t=0 (say) if y=2sint-cost

Step-by-step explanation:

Clearly by the above we can see that if y=2sint-cost at t=0, then y=-1 because at t=0 sint vanishes and leaves us with only cost and at t=0 cos0=1

5 0
3 years ago
A square dinner napkin 8 inches on each side is folded along it's diagonal.find the area of the folded napkin
trasher [3.6K]
The area of the folded napkin is 32 sq in. This is because if you find the area of the napkin normally, you will get 64, because 8*8 is 64. If you divide that by 2, you will get 32.
7 0
4 years ago
2x - y = -7 <br> -5x+5y=-5
wolverine [178]

Answer:

Have you tried math      way yet?

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • If f(x) is a linear function, what is the value of n?
    12·1 answer
  • What is the value of a if a*a*a=a+a+a?
    11·2 answers
  • Divide the polynomials
    6·1 answer
  • Evaluate for X = 6, y= 0.3 z=-2.4 x/y+2z. Please help, show your work?
    14·1 answer
  • A normal body temperature for a human is approximately 98° Fahrenheit. What is this temperature in degrees Celsius? Round your a
    5·2 answers
  • Solve the equation: x-10 - 2x + 7 = 8 + x - 10 - 3x
    15·2 answers
  • AB=AD and BC=DC<br> X=? <br> A=x B=35 C=82
    11·1 answer
  • Janice is redecorating her room. She wants to paint a design on a rectangular section of her wall that is at least 76.5 square f
    5·2 answers
  • OK IF YOU ARE ON HERE PLAYING STOP PEOPLE ARE TRYING TO GET THERE GRADE UP AND YOUR IN HERE PLAYING!! YOUR PROBABLY THE ONE WITH
    7·1 answer
  • Last month you spent $20 on clothing. This month you spent 180% of what you spent last month. How much did you spend this month?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!