Answer:
Answer A (or C. Both were very close)
Step-by-step explanation:
I don't know what "please only answer if you know not to ask a question" means.
Since ∠ADB is 90° and ∠BAD is 36°, then ∠ABD is 180-90-36 or 54°.
You could just try using the Pythagorean Theorem for all the answer choices.
(a²+b²=c² where a and b are the legs and c is the hypotenuse)
A.
11²+8²=c²
121+64=c²
c=
c ≈ 13.60
B.
I don't need to prove this because the shorter legs' sum is greater than the hypotenuse and will not make a triangle.
C.
15.1²+11²=c²
288.01+121=c²
c=
c ≈ 18.68 ≈ 18.7
D.
I don't need to prove this because the shorter legs' sum is greater than the hypotenuse and will not make a triangle.
I think answer A is the best since it rounds closer to the answer in the row. It was pretty close between C and A so you can decide if you'd like but I suggest A because it's a closer rounding.
Answer:
Figure 1:
Area: 30m^2
Perimeter: 23.6m
Figure 2:
Area: 98.8km^2
Perimeter:56.5km
Step-by-step explanation:
Area is base x height.
To get the perimeter, add up all the sides.
Figure 1:
Area:
6x5=30m^2
Perimeter: 6+5.8+6+5.8=23.6m
Figure 2:
Area:
7.6x13 = 98.8km^2
Perimeter:7.6+15+20+13.9=56.5km
Simplify.
4 (b + 2) - 3b
4b + 8 - 3b
Subtract 3b from 4b.
b + 8
Equivalent Expression: b + 8
Answer:
15+3=18
Step-by-step explanation:
None of the above