The angles of a triangle are 128 degrees 5x + 10 degrees + 9x degrees what is the value of x

1 answer:

6 0

All the angles in a triangle equal 180 degrees so 128 + (5x+10) + 9x = 180

Group the like values to get 138 + 14x = 180

Subtract 138 from 180 to get 14x = 42

Divide 42 by 14 to get x = 3

Therefore x = 3

You might be interested in

Which expression represents the area of the parallelogram below?

avanturin [10]

A is the answer because to find a area you need to multiply each side

5 0

3 years ago

Nancy winter local zoo that featured 11 monkey exhibits if these monkey exhibit make up 55% of the zoo exhibits then how many ex

NeTakaya

Answer:

20 total exhibits at the zoo

Step-by-step explanation:

55% of 20 = 11 (monkeys)

4 0

3 years ago

Triangle ABC IS an isosceles triangle AB=BC m

True [87]

Answer:

<em>The measure of angle A is 73°</em>

Step-by-step explanation:

<u>Isosceles Triangles</u>

An isosceles triangle is a triangle with exactly two congruent sides. The angles the congruent sides form with the third side are also equal.

The triangle ABC is isosceles and AB congruent with BC. The angle at B measures 34°.

The other two angles are congruent, i.e. their measures are the same. Since the internal angles of a triangle sum 180°:

$2*m\angle A=180^\circ - 34^\circ =146^\circ$

Thus:

$m\angle A=146^\circ /2=73^\circ$

The measure of angle A is 73°

5 0

3 years ago

1. If x is the supplementary angle of 155°,

ValentinkaMS [17]

Answer:

0.466 degree is the. answer

6 0

3 years ago

Kelvin saves $60 a day. Al saves $90 a day. How many times Kelvin's savings are Al's savings?

vaieri [72.5K]

How many times Kevin's savings are al's savings is 30 more

5 0

3 years ago

Read 2 more answers