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
Norma-Jean [14]
2 years ago
10

Why is 21 sqrt root an irrational number?

Mathematics
1 answer:
STatiana [176]2 years ago
6 0

Answer:

Because it cannot be written as a fraction

Step-by-step explanation:

The square root of any non-perfect square will always be irrational and cannot be written as a fraction. The sqrt(21) has no repeating digits because its digits go on forever.

You might be interested in
Find y' by implicit differentiation √x +√y =1
AleksandrR [38]
Differentiate both sides with respect to x

\frac{d}{dx}(x^{\frac{1}{2}} + y^{\frac{1}{2}}) = \frac{d}{dx}(1)\\\\ \frac{1}{2x^{\frac{1}{2}}} + \frac{1}{2y^{\frac{1}{2}}}\frac{dy}{dx} = 0\\\\\frac{1}{2y^{\frac{1}{2}}}\frac{dy}{dx} = -\frac{1}{2x^{\frac{1}{2}}}\\\\\frac{1}{2\sqrt{y}}\frac{dy}{dx} = -\frac{1}{2\sqrt{x}} \\\\\frac{dy}{dx} = -\frac{1}{2\sqrt{x}} \times 2\sqrt{y}\\\\\frac{dy}{dx} = -\frac{\sqrt{y}}{\sqrt{x}} \\\\\boxed{\bf{y'= -\frac{\sqrt{y}}{\sqrt{x}}}}
5 0
3 years ago
Simplify the given expression
Rashid [163]

Answer:

Step-by-step explanation:

you divide

5 0
3 years ago
Read 2 more answers
The original photo was 11 inches wide by 14 inches high the new photo will be 132 inches wide what will be the new height
Aleksandr-060686 [28]

They are similar rectangles. Therefore, the side lengths are proportional:

\dfrac{11}{132}=\dfrac{14}{x}\ \ \ \ |\text{cross multiply}\\\\11x=132\cdot14\ \ \ \ |:11\\\\x=\dfrac{132\cdot14}{11}\\\\x=\dfrac{12\cdot14}{1}\\\\x=168

Answer: The new height will be equal 168 inches.

4 0
3 years ago
A ship is 130 m away from the centre of a barrier that measures /
ANEK [815]

Answer:

Step-by-step explanation:

50 meters away

7 0
2 years ago
What is 0.5 is 10 times as great as what
Digiron [165]

Answer:

5

Step-by-step explanation:

0.5 x 10 = 5

A simple way to solve this problem is to move the decimal one place to the right.

If this answer is correct, please make me Brainliest.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which is larger?????????
    10·2 answers
  • Please help thanks guys
    12·1 answer
  • "Name an angle adjacent to
    13·2 answers
  • Which logarithmic equation is equivalent to the exponential below ? e^5x=6
    13·1 answer
  • A pizza with a 30cm diameter is cut up into slices.
    6·1 answer
  • Name some examples of scale factors that are less than 1. What effect does a scale factor less than 1 have on the dimensions of
    9·1 answer
  • ​100 centimeters = ​<br> meter<br><br><br> How much meter's do it equals?
    7·2 answers
  • Tammy must run more than 67 miles total to reach her fitness goals. She has already run 35 miles and runs 4 miles per day, Which
    15·1 answer
  • Select the correct answer.
    14·1 answer
  • If line a is perpendicular to line b and the slope of line a is 7 whats the slope of line b
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!