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lana66690 [7]
3 years ago
14

Can someone please help me with this i don’t know what I’m doing.

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
6 0
Can I get your snap?
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50 POINTSS!!!
Yuri [45]
(A) Either of
• rotation 180° about point B
• reflection across point B

(B) If the transformation is rigid, the corresponding sides and angles are congruent.

(C) The sequence of letters tells you the correspondence.
  AB ⇔ DB
  AC ⇔ DE
  BC ⇔ BE
  ∠A ⇔ ∠D
  ∠ABC ⇔ ∠DBE
  ∠C ⇔ ∠E
5 0
3 years ago
If you place a cup of 210 degree Fahrenheit coffee on a table in a room that is 68 degrees fareinheit, and ten minutes later, it
Lana71 [14]
Newton's Law of Cooling

Tf=Ts+(Ti-Ts)e^(-kt)   where Tf is temp at time t, Ts is temp of surroundings, Ti is temp of object/fluid.  So we need to find k first.

200=68+(210-68)e^(-10k)

132=142e^(-10k)

132/142=e^(-10k)

ln(132/142)=-10k

k=-ln(132/142)/10

k≈0.0073  so 

T(t)=68+142e^(-0.0073t)  so how long until it reaches 180°?

180=68+142e^(-0.0073t)

112=142e^(-0.0073t)

112/142=e^(-0.0073t)

ln(112/142)=-0.0073t

t= -ln(112/142)/(0.0073)

t≈32.51 minutes


8 0
3 years ago
Determine the relationship between the two vecors
asambeis [7]

Answer:

Step-by-step explanation:

Since there exists a scalar  

λ

λ

(namely  

λ=a⋅b

λ=a⋅b

) such that  

b=λa

b=λa

, the directions of the two vertices are the same (they are collinear). This implies that  

|a⋅b|=|a||b|

|a⋅b|=|a||b|

.

So,  

|a|=|(a⋅b)b|=|a||b||b|

|a|=|(a⋅b)b|=|a||b||b|

which implies that  

|b|=1

|b|=1

6 0
3 years ago
Please help!!!! Math
serg [7]
1 = 1, 2, 3, 4, 5
4= 4, 8, 12, 16, 20
5= 5, 10, 15, 20, 25
3 0
2 years ago
Read 2 more answers
Find the GFC of 22,44
11111nata11111 [884]

Answer:

GCF = 22

Step-by-step explanation:

22 = 22 x 1

44 = 22 x 2

GCF = 22

8 0
3 years ago
Read 2 more answers
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