Answer:
78
Step-by-step explanation:
angle ACD + angle DCB = 180 (Angles on straight line)
4x + 2 + 3x + 3 = 180
7x + 5 = 180
7x = 180-5
7x = 175
x = 175 / 7
x = 25
angle DCB = 3x +3 = 3*25 + 3 = 75 +3 = 78
If I'm understanding the question correctly, 7+3=10. 10*8=80.
1. 18
2.8
3.-1
<h3>What is expression?</h3>
An expression is a set of terms combined using the operations +, – , x or ,/.
Given:
1. 22 − 1 (4)
=22- 1*4
= 22-4
= 18
2. 2 + 2 (3)
=2+2*3
=2+6
=8
3. 1 − 2
= -1
Learn more about expression here:
brainly.com/question/14083225
#SPJ1
Answer:
Step-by-step explanation:
The area of a rectangle can be found with the formula 
, where 
is the length of the rectangle and 
is the width.
From the given problem statement, we know that 
and 
, so we can fill in those values in the formula anbd solve for to get the width:
Divide both sides by 
to isolate by itself:
