Ask question

Ask question

All categories

Sergeeva-Olga [200]

2 years ago

12

Dave says:

1 answer:

Nuetrik [128]2 years ago

8 0

There are 2 symmetry lines of a rectangle which are from its length and breadth. These two lines cut the rectangle in two similar halves which are mirror images of each other. If a rectangle is folded along its line of symmetry, it superimposes perfectly.

You might be interested in

Which of the inequalities matches the graph below?

WARRIOR [948]

A Picture would be better

4 0

2 years ago

Read 2 more answers

an isosceles triangle has congruent sides of 20cm. the base is 10cm. find the height of the triangle.

dolphi86 [110]

Answer:

$\large\boxed{A_\triangle=25\sqrt{15}\ cm^2}$

Step-by-step explanation:

Look at the picture.

The formula of an area of a triangle:

$A_\triangle=\dfrac{bh}{2}$

<em>b</em><em> - base</em>

<em>h</em><em> - height</em>

<em />

We need a length of a height.

Use the Pythagorean theorem:

$leg^2+leg^2=hypotenuse^2$

We have:

$leg=5,\ leg=h,\ hypotenuse=20$

Substitute:

$5^2+h^2=20^2$

$25+h^2=400$ <em>subtract 25 from both sides</em>

$h^2=375\to h=\sqrt{375}\\\\h=\sqrt{(25)(15)}\\\\h=\sqrt{25}\cdot\sqrt{15}\\\\h=5\sqrt{15}\ cm$

Calculate the area:

$A_\triangle=\dfrac{(10)(5\sqrt{15})}{2}=\dfrac{50\sqrt{15}}{2}=25\sqrt{15}\ cm^2$

8 0

2 years ago

17-(5-p)=2(5p-16)<br> Step by step explanation please

12345 [234]

Answer:

p= 44 /9

(44 over 9)

Step-by-step explanation:

3 0

2 years ago

The solutions to the inequalityys 2x - 4 are shaded on

ipn [44]

Answer:

(3,2)

Step-by-step explanation:

3,2 is the answer...hope you can understand

6 0

2 years ago

Is 2/10 smaller than 19/100?

s344n2d4d5 [400]

Answer:

Step-by-step explanation:

no cause 2/10 is the same as 20/100

8 0

2 years ago