All categories

3 years ago

How to find the value of x so the polygons have the same perimeter

Mathematics

2 answers:

Scorpion4ik [409]3 years ago

6 0

I hope this helps you

lesya [120]3 years ago

6 0

Answer:

x=4

Step-by-step explanation:

The perimeter´s formula for this kind of polygons is

The triangle perimeter would be:

(x+2)+(x+3)+(x+3)

And the rectangle:

(x+2)+(x+2)+x+x

For them to have the same value, we should equal them:

(x+2)+(x+3)+(x+3)=(x+2)+(x+2)+x+x

Working with this:

3x+8=4x+4

x=4

You might be interested in

The measure of angle KMJ??

Irina18 [472]

44

Assuming JM and LN are parallel, KMJ=MKN. MKN is part of a triangle where the other two values are defined (48 and 88). By subtracting these values from 180, we find the value of MKN is 44, which therefore is also the value of KMJ.

3 0

3 years ago

An isosceles triangle has an angle that measures 38degrees. What measures are possible for the other two angles? Choose all that

Sphinxa [80]

Answer:

71° and 71°.

⠀

Step-by-step explanation:

The triangle having two sides equal along with one different side is called an isosceles triangle.

⠀

So, Let us assume the other sides (two equal sides) of the isosceles triangle as x. As the different side is already given in the question.

⠀

We know that,

The sum of all angles of a triangle is 180°

⠀

So, According to the question :

⠀

${\longrightarrow \it\qquad { \ { { 38 \: }^{ \circ} + x + x = 180{}^{ \circ} }}}$

⠀

${\longrightarrow \it\qquad { \ { { 38 \: }^{ \circ} + 2x = 180{}^{ \circ} }}}$

⠀

${\longrightarrow \it\qquad { \ { 2x = 180{}^{ \circ} - { 38 \: }^{ \circ}}}}$

⠀

${\longrightarrow \it\qquad { \ { 2x = 142{}^{ \circ} }}}$

⠀

${\longrightarrow \it\qquad { \ { x = \dfrac{142{}^{ \circ}}{2} }}}$

⠀

${\longrightarrow \it\qquad { \pmb { x = 71^{ \circ} }}}$

⠀

Therefore,

The measure of the two other angles of the isosceles triangle are 71° and 71°.

3 0

2 years ago

(URGENT) need help with this so badly someone help asap

Fynjy0 [20]

The answer for A is 2,026. I set a porportion up which is 77/x = 3.8/100

The answer to B is 26

8 0

3 years ago

What is 0.9 written as a percent

ryzh [129]

0.9 = 90%.

<span>0.9 in percent = 0.9 x 100% = 90%</span>

3 0

3 years ago

Read 2 more answers

PLEASE HELP ME ASAP!!! (DUE TOMORROW!!) Please help me with 9, 10, and 12!!!!!!!!!!

mina [271]

9.B

10.C

12.B

12. You have to do the circumference of the circle and then divide it by 2.

10. 7^2 is not 14 it is 49 because 7*7 is 49.

4 0

3 years ago