Ask question

Ask question

All categories

3 years ago

11

What is the square root of 21

1 answer:

Andru [333]3 years ago

4 0

Answer:

4.58

Step-by-step explanation:

21 is not a perfect square, but lies between the perfect squares 16 and 25. Thus, √21 lies between √16 and √25, that is, between 4 and 5. Since 21 is closer to 25 than to 16, √21 is closer to 5 than to 4. A rough estimate of √21 would be 4.7.

√21 done on a calculator comes out to 4.58.

You might be interested in

The height, h, in feet of a ball suspended from a spring as a function of time, t, in seconds can be modeled by the equation (eq

uysha [10]

Answer:

D

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

HELP!! Does this graph show a function?

Leokris [45]

Answer:

Answer is C

Step-by-step explanation:

When we do the vertical line test the line intersects (cause its a circle)

This could explain better

3 0

3 years ago

Read 2 more answers

Angeline bought s yards of satin fabric

maria [59]

Is that the whole question?

6 0

3 years ago

(b) Her friend Hannah gets 70% of the 140 marks available in the exam.

Lisa [10]

$\huge\fbox{Answer ☘}$

number of marks available = 140

percentage secured = 70%

therefore marks secured =

$70\% \: \: of \: 140 \\\\ =>\frac{70}{100} \times 140 \\ \\ = > 98 \: marks$

hope helpful~

5 0

3 years ago

Find the missing side of this right<br> triangle.<br> 19<br> X<br> X =<br> 16<br> ✓[?]

julia-pushkina [17]

Answer:

x = sqrt(105)

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

16^2 + x^2 = 19^2

256 + x^2 = 361

x^2 = 361 -256

x^2 =105

Take the square root of each side

sqrt(x^2) = sqrt(105)

x = sqrt(105)

8 0

2 years ago