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gogolik [260]
3 years ago
5

Please help me please I only have a couple hours left and this is taking soooo much time

Mathematics
1 answer:
Makovka662 [10]3 years ago
3 0

Answer:

it would be the first answer

Step-by-step explanation:

you can draw the net of the shapes, and count each corner there

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Find AD. Show how you got your answer.
stealth61 [152]
Notice the picture below
the AD line is a bisector, cutting the 36 degrees A in half,
18 and 18 degrees each half

notice the tickmarks, the triangle is an isosceles,
if those two sides are equal, so are the angles they make
down below with the base

now, the base is 8, AD is bisecting that too, to 4 and 4

now, using the Law of Sines

\bf \textit{Law of sines}
\\ \quad \\
\cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c}\\\\
----------------------------\\\\
\cfrac{sin(18^o)}{4}=\cfrac{sin(72^o)}{\overline{AD}}\implies \overline{AD}=\cfrac{4\cdot sin(72^o)}{sin(18^o)}

keep in mind, the angles are in degrees, so, when taking the sines, make sure your calculator is in Degree mode

4 0
3 years ago
HELP PLEASE
nasty-shy [4]

Answer:

Part A: -2.5

Part B: -1

Part C: 1

Part D: 2.5

5 0
3 years ago
Which expression is equivalent to 24 ⋅ 2−7?
marta [7]

Answer:

211

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Can someone tell me what it is and explain it in an easy way, I'm kind of an idiot
lubasha [3.4K]
1/2 x 3/4
1 x 3 / 2 x 4
= 3/8
6 0
3 years ago
The strength of a cable is proportional to the square of its diameter. If a 2-cm cable will support 800kg, how much will a 3-cm
xz_007 [3.2K]
Strength [is proportional to] d^2
strength1/(d1)^2 = strength2/(d2)^2
800kg/(2cm)^2 = strength2/(3cm)^2
strength2 = 800 kg * (3 cm)^2/(2 cm)^2
strength2 = 800 kg * 3^2/2^2
strength2 = 800 kg * 9/4
strength2 = 1800 kg
3 0
3 years ago
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