3 years ago

HELPPPPP ASAPPPPPPPPPPPPPPPP PLSSS

Mathematics

1 answer:

balandron [24]3 years ago

4 0

Answer:

B) 2\ sq.rt{3}units

Step-by-step explanation:

using Pythagoras theorem

a^2+ b^2=c^2

a^2+ 3^2=(√21)^2

a^2+9= 21

a^2=21-9

a^2=12

a=√12

a=2√3

You might be interested in

What is the measurement of

goldfiish [28.3K]

Answer:

Step-by-step explanation:

All the sides are equal, which makes it an equilateral triangle.

That means all the angles are equal

180/3 = 60

Angle A is 60 degrees

7 0

3 years ago

Read 2 more answers

Which of the following is a problem you might notice using your sense of smell?

Nitella [24]

A flooded engine is the answer

5 0

3 years ago

Read 2 more answers

What’s is x=5y for y

Margarita [4]

Answer:

$y=\frac{x}{5}$

Step-by-step explanation:

$\frac{x = 5y}{5}$

For the y to cancel out, you would have to divide y by 5. Whenever you do one thing to a side, you have to do the same on the other side. Once you do so, you'll get : $\frac{x}{5}$

Hope this helps!!

8 0

3 years ago

Read 2 more answers

What is the area of the following circle? use 3.14 for pi and label your answer in units squared or square units.

Alenkinab [10]

Answer:

153. 86 units squared

Step-by-step explanation:

3. 14 x 7^2= 153. 86

4 0

3 years ago

Read 2 more answers

Using (x + a) (x + b) = x² + (a + b) x + ab, evaluate 75 x 77

Gre4nikov [31]

(x + a) (x + b) = x² + (a + b) x + ab

75 * 77=

=(70+5)(70+7)

=70²+(5+7)*70+5*7

=4900+12*70+35

=4900+840+35

=5775

4 0

3 years ago