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Deffense [45]
2 years ago
5

Given: AC = 4DC, BC = 4EC Prove: A = D​

Mathematics
1 answer:
ella [17]2 years ago
4 0
Two triangles that are proportional to each other and have the same angle are similar.
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Triangle Q M N is shown. The length of Q M is 18, the length of M N is 17, and the length of Q N is 20. Law of cosines: a2 = b2
kvasek [131]

Answer:

53°

Step-by-step explanation:

17² = 18² + 20² - 2(18)(20) cos Q

289 = 324 + 400 - 720 cos Q

289 = 724 - 720 cos Q

-435 = -720 cos Q

0.6042 = cos Q

cos^{-1} (0.6042) = Q

Q = 52.83

3 0
3 years ago
HELP PLEASE my teachers always force me to turn on my camera during class unless I have a valid excuse can anyone give me a crea
allsm [11]

Answer: My internet connection is not good enough.

Step-by-step explanation: This one may be pretty commonly used but also a common problem people always have and it's pretty unavoidable. Tell her that the call\meeting gets super laggy and then ends up freezing and that doing it over voice is a better option for you so you can get the best learning experience or something like that. Basically pretend you care until he\she believes it.

Good luck <3 Let me know if you need another!

4 0
2 years ago
Read 2 more answers
Tammy baked a batch of 20 cupcakes. Daniella baked
ElenaW [278]

Multiplication is the process of multiplying. The total number of cupcakes that are produced by the 3 girls is 44.

<h3>What is multiplication?</h3>

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.

Given that Tammy baked a batch of 20 cupcakes and Daniella baked 4/5 as many cupcakes as Tammy. Therefore, the number of cupcakes made by Daniella is,

Number of cupcakes made by Daniella

= (4/5)×(Number of cupcakes made by Tammy)

= (4/5) × 20

= 16

Now, if Miko baked 1/2 as many cupcakes as Daniella. Therefore, the number of cupcakes made by Miko is,

Number of cupcakes made by Miko

= (1/2) × (Number of cupcakes made by Daniella)

= (1/2) × 16

= 8

Further, the total number of cupcakes that are produced are,

Number of cupcakes = 20 + 16 + 8 = 44

Hence, the total number of cupcakes that are produced by the 3 girls is 44.

Learn more about Multiplication here:

brainly.com/question/14059007

#SPJ1

8 0
1 year ago
Plz help ????????????????????????<br> My brain hurts
aniked [119]

Answer:

what is the problem i can't see anything

5 0
3 years ago
Read 2 more answers
2b^2+4b–2=0 what is the answer?
s2008m [1.1K]
2b^2+4b-2=0\\&#10;2(b^2+2b-1)=0\\&#10;2(b^2+2b+1-2)=0\\&#10;2((b+1)^2-2)=0\\&#10;2(b+1)^2-4=0\\\&#10;2(b+1)^2=4\\\&#10;(b+1)^2=2\\&#10;b+1=-\sqrt2 \vee b+1=\sqrt2\\&#10;b=-1-\sqrt2 \vee b=-1+\sqrt2&#10;&#10;
5 0
3 years ago
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