
<h3><u>Given :-</u></h3>
- Here, we have given one quadrilateral that is quadrilateral ABCD
- We also have given the angles of quadrilateral that is ( 6x + 5)° , ( 9x - 10)° , 80° and a right angle
<h3><u>To </u><u>Find </u><u>:</u><u>-</u></h3>
Here, we have to find the value of x
<h3><u>Let's </u><u>Begin </u><u>:</u><u>-</u><u> </u></h3>
We have given quadrilateral ABCD here , whose angles are as follows
- Angle A = ( 6x + 5)°
- Angle B = ( 9x - 10)°
- Angle C = 80°
- Angle D = A right angled triangle
[ The measure of right angled triangle is 90° ]
<u>We </u><u>know </u><u>that</u><u>, </u>
- Sum of the angles of quadrilateral is equal to 360°
<u>That </u><u>is </u>

<u>Subsitute </u><u>the </u><u>required </u><u>values </u>









Hence, The value of x is 13 .

Measure of Angle A




Measure of Angle D




<u>Now</u><u>, </u><u> </u><u>we </u><u>know </u><u>that</u><u>, </u>
- Sum of angles of triangles is equal to 360°
<u>That </u><u>is</u><u>, </u>





Hence, Proved.
Answer:B
Step-by-step explanation:Most of Bookstore B's books r below $85
Answer:
136 sq units
Step-by-step explanation:
area = length * width
a = 17 * 8
a = 136 sq units
Answer: 0.067 litres of water
Step-by-step explanation:
The mode is:
Concentration of new solution = Moles of acid in original solution / (Volume of original solution + Volume of water added)
Assume volume of water added is w.
12 = 16 (0.2) / (0.2 + w)
(0.2 + w) * 12 = 3.2
0.2 + w = 3.2 / 12
w = (3.2 / 12) - 0.2
w = 0.067 litres of water
Answer:
- 0.5 - 1.7 = - 2.2
Step-by-step explanation:
We need to add two numbers using the number line.
Steps to Add Numbers on the Number Line:
When we add a negative numbers that we move the point to the left of the number line.
We are adding two negative numbers. Locate the first number which is -0.5. Then, add negative 1.7 to it which means moving the existing point 1.7 units to the left of the number line.
So, we get 2.2 on the left.
2.2 is left side it means sign is negative.
Final answer is -2.2