Find the value of x super easy 7th grade math

Question

asked Aug 10, 2023 76.2k views

2 Answers

Sabeer · Answer 1 · 2023-08-13T01:25:05+0000

Answer:

x = 50 degrees

Explanation:

all the angles of a triangle add up to 180

a right angle is ninety degrees

90 + the 40 degrees on the top is 130 degrees

180 - 130 is 50

x = 50

Martin McNulty · Answer 2 · 2023-08-14T17:06:47+0000

Answer:

$\:$

Explanation:

Before finding the value of x, we must know this first.

$\\ \longrightarrow \qquad { \underline{ \boxed{ \pmb{ \frak{Sum \: of \: all \: \: angles_((Triangle)) = 180 {}^( \circ) }}}}} \: \: \bigstar \\ \\$

This is a right angled triangle so,

$\\ \longrightarrow \qquad { { { \pmb{ \sf{ \angle \: 1 +\angle \: 2 + \angle \: 3= {180}^( \circ) }}}}} \\ \\$

$\longrightarrow \qquad { { { \pmb{ \sf{ x^( \circ) + {90}^( \circ) + {40}^( \circ) = {180}^( \circ) }}}}} \\ \\$

Adding like terms we get :

$\\ \longrightarrow \qquad { { { \pmb{ \sf{ x^( \circ) + {130}^( \circ) = {180}^( \circ) }}}}} \\ \\$

Subtracting 130° from both sides :

$\\ \longrightarrow \qquad { { { \pmb{ \sf{ x^( \circ) + {130}^( \circ) - {130}^( \circ) = {180}^( \circ)- {130}^( \circ)}}}}} \\ \\$

$\longrightarrow \qquad { \underline { \boxed{ \pmb{ \frak{ x^( \circ) = {50}^( \circ)}}}}} \: \: \bigstar\\ \\$

Therefore,