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
liq [111]
3 years ago
11

Can you form a right triangle form 21, 220, 221

Mathematics
1 answer:
wariber [46]3 years ago
4 0
From Pythagorean we know x^2 + y^2 = z^2. (x and y are smaller than z).

Let’s try!

21^2 + 220^2 = 441 + 48400 = 48841.

221^2 = 48841. The same!

So the answer is yes, you can make a right angled triangle.
You might be interested in
WILL MARK BRINLIEST. Can someone help me wit den two questions?
VLD [36.1K]

Answer:1. B 2. D

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A lake polluted by bacteria is treated with an antibacterial chemical. Aftertdays, thenumber N of bacteria per milliliter of wat
jeyben [28]

Answer:

N(1)=50 is a minimum

N(15)=4391.7 is a maximum

Step-by-step explanation:

<u>Extrema values of functions </u>

If the first and second derivative of a function f exists, then f'(a)=0 will produce values for a called critical points. If a is a critical point and f''(a) is negative, then x=a is a local maximum, if f''(a) is positive, then x=a is a local minimum.  

We are given a function (corrected)

N(t) = 20(t^2-lnt^2)+ 30

N(t) = 20(t^2-2lnt)+ 30

(a)

First, we take its derivative

N'(t) = 20(2t-\frac{2}{t})

Solve N'(t)=0

20(2t-\frac{2}{t})=0

Simplifying

2t^2-2=0

Solving for t

t=1\ ,t=-1

Only t=1 belongs to the valid interval 1\leqslant t\leqslant 15

Taking the second derivative

N''(t) = 20(2+\frac{2}{t^2})

Which is always positive, so t=1 is a minimum

(b)

N(1)=20(1^2-2ln1)+ 30

N(1)=50 is a minimum

(c) Since no local maximum can be found, we test for the endpoints. t=1 was already determined as a minimum, we take t=15

(d)

N(15)=20(15^2-2ln15)+ 30

N(15)=4391.7 is a maximum

7 0
3 years ago
Linda soent 3/4 of her saving on furniture and the rest on a TV. If the TV cost her $200, what were her orginal savings?
garri49 [273]
She would have spent $600 on the furniture, and $200 on the T.V.

Her original savings were $800.
8 0
3 years ago
It takes 45 minutes for 4 people to paint 5 walls.
Molodets [167]

4 people x 45 minutes = 180 minutes total to paint 5 walls

180/5 = 36 minutes of man work per wall

36 * 4 walls = 144 total minutes

144/6 people = 24 minutes total


4 0
4 years ago
Your bank account balance is - $20.85. You deposit $15.50. What is your new balance
viktelen [127]
Your new balance is $5.35

5 0
3 years ago
Read 2 more answers
Other questions:
  • Round 55.983 to the nearest hundredth.
    15·2 answers
  • A lawn sprinkler spins in a circle. The sprinkler covers a radius of 4 feet. Which choice is the closest to the area of lawn tha
    6·2 answers
  • What is the surface area of the cube
    7·2 answers
  • Which shows the equation of the line using function notation?
    14·1 answer
  • Help me with #6 please
    14·2 answers
  • What value of x is in the solution set of 8x – 6 &gt; 12 + 2x?<br> (answer choices are -1, 0, 3, 5)
    10·1 answer
  • Can someone plz help me asap, thank you?!
    8·1 answer
  • Pls help me with this
    9·2 answers
  • Please can someone help me?
    8·1 answer
  • The figure is made up of two identical quarter circles and a rectangle. The length of the rectangle is 35 cm and its breadth is
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!