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pychu [463]
4 years ago
8

Given that D is the midpoint of AB and B is the midpoint of AC, which statement must be true?

Mathematics
1 answer:
abruzzese [7]4 years ago
4 0

Answer:

AC =4DB

Step-by-step explanation:

D is midpoint of AB .So, AD = DB

AB = 2DB ---------- (i)

B is the midpoint of AC.So, AB = BC

AC = 2AB

= 2*2DB     {FROM 1}

=4DB  

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Use the theorem in Sec. 28 to show that if f (z) is analytic and not constant throughout a domain D, then it cannot be constant
alexandr1967 [171]

Answer:

The value of f(z) is not constant in any neighbourhood of D. The proof is as explained in the explaination.

Step-by-step explanation:

Given

For any given function f(z), it is analytic and not constant throughout a domain D

To Prove

The function f(z) is non-constant constant in the neighbourhood lying in D.

Proof

1-Assume that the value of f(z)  is analytic and has a constant throughout some neighbourhood in D which is ω₀

2-Now consider another function F₁(z) where

F₁(z)=f(z)-ω₀

3-As f(z) is analytic throughout D and F₁(z) is a difference of an analytic function and a constant so it is also an analytic function.

4-Assume that the value of F₁(z) is 0 throughout the domain D thus F₁(z)≡0 in domain D.

5-Replacing value of F₁(z) in the above gives:

F₁(z)≡0 in domain D

f(z)-ω₀≡0 in domain D

f(z)≡0+ω₀ in domain D

f(z)≡ω₀ in domain D

So this indicates that the value of f(z) for all values in domain D is a constant  ω₀.

This contradicts with the initial given statement, where the value of f(z) is not constant thus the assumption is wrong and the value of f(z) is not constant in any neighbourhood of D.

6 0
3 years ago
Marcus is observing bacteria multiply.every 15 seconds,there are 10 times more bacteria than before.if there are 10 bacteria now
r-ruslan [8.4K]
No he is wrong  there will be 150000000 bacteria on it at 2 minutes

WORK:

2 min=120 sec
120 divided by 15=8
15 times 10 (7 times)
u get 150,000,000


8 0
3 years ago
Find the amount budgeted for food on a salary of $19,300 if the food budget is 13%.
kvv77 [185]
The amount of the food budget is $2,509 as it is 13% of $19,300.
4 0
3 years ago
HELP ME PLEASE WILL PICK BRAINLYEST
Ronch [10]
Here's one way to do it.

AB ≅ AC . . . . . . . . . . given
∠BAY ≅ ∠CAY . . . . given
AY ≅ AY . . . . . . . . . . reflexive property
ΔBAY ≅ ΔCAY . . . .. SAS congruence
XY ≅ XY . . . . . . . . . . reflexive property
∠AYB ≅ ∠AYC . . . . CPCTC
BY ≅ CY . . . . . . . . . . CPCTC
ΔXYB ≅ ΔXYC . . . .. SAS congruence

Therefore ...
∠XCY ≅ ∠XBY . . . . CPCTC
3 0
3 years ago
Derek is going to lay grass in a rectangular space that measures 85 by 32 feet.
adoni [48]

Answer:

2720 feet squared

Step-by-step explanation:

85 * 32 = 2720

3 0
4 years ago
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