2 answers:
Answer:
120
Step-by-step explanation:
ABC is a straight line so it is equal to 180
ABC = ABD + DBC
180 = 2x + x+90
Combine like terms
180 = 3x+90
Subtract 90 from each side
180-90 = 3x+90-90
90 = 3x
Divide each side by 3
90/3 = 3x/3
30 =x
We want to find DBC
DBC = x+90
= 30+90
= 120
Answer:
m<DBC=120°
Step-by-step explanation:
2x+x+90=180
3x=180-90
3x=90
x=30
m<DBC=x+90=30+90=120
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inverse means opposite,
inverse of addition is subtraction
14 is always 15 is sometimes 16 is sometimes
Answer:
8.1
Step-by-step explanation:
Area of a triangle = ½ × base × height = Area
Rearranged =
area/1/2xheight
The base is the length.
8.91/1/2x2.2
=8.1 inches
Answer:
5√2
I think, that sign mean square root.. just letting you know.
Hope I helped!
<em>*simplyeliza*</em>
Answer:
900
Step-by-step explanation:
perimeter: P = 2w + 2h
P = 2(20) + 2(25)
P = 40 + 50
P = 90
Multiply perimeter by 10:
90 × 10 = 900
