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2 years ago

Please help asap. Thank you so much! Question 1/7

Mathematics

2 answers:

solniwko [45]2 years ago

5 0

What class is for ? If you tell me I could take out my notes

Cloud [144]2 years ago

3 0

Answer:

<u> Reasons Statements </u>

1. Given
$\overline{BC}\cong\overline{EC}$ 2. Given
3. All vertical angles are congruent
$\Delta{ABC}\cong\Delta{DEC}$ 4. SAS

Step-by-step explanation:

You have to prove the triangle congruent by SSS (side side side), SAS (side angle side), ASA (angle side angle), AAS (angle angle side), and HL (hypotenuse leg). I proved this triangle by SAS because they already told us that < A and < D are congruent and that line BC is congruent to line EC. So I just had to prove that <ACB and <DCE are congruent, and since they are vertical angles they have to be congruent.

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hichkok12 [17]

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3 years ago

Cory Randle is an MIS manager for an international consulting firm. Cory travels to different European countries where he implem

romanna [79]

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Step-by-step explanation:

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4 0

3 years ago

Please help ill give you brainliest

mel-nik [20]

Answer:

Step-by-step explanation:

Th correct one is the third box

plz mark me brainliest

3 0

2 years ago

Read 2 more answers

PLEASE HELP!!!!!!!!!!!!!!!!!

Lelechka [254]

x=4.75

6×4.75=28.5

15×4.75-12=59.25

19×4.75+2=92.25

28.5+59.25+92.25=180

m<MNI= 92.25

I think this is right. I hope that it was helpful:)

8 0

2 years ago

What’s the vertex form of F(x)=x^2+2x-3

kupik [55]

Answer:

$\large\boxed{f(x)=(x+1)^2-4}$

Step-by-step explanation:

$\text{The vertex form of a quadratic equation}\ f(x)=ax^2+bx+c:\\\\f(x)=a(x-h)^2+k\\\\(h,\ k)-\text{vertex}\\=====================================$

$\bold{METHOD\ 1:}\\\\\text{convert to the perfect square}\ (a+b)^2=a^2+2ab+b^2\qquad(*)\\\\f(x)=x^2+2x-3=\underbrace{x^2+2(x)(1)+1^2}_{(*)}-1^2-3\\\\f(x)=(x+1)^2-4\\==============================$

$\bold{METHOD\ 2:}\\\\\text{Use the formulas:}\ h=\dfrac{-b}{2a},\ k=f(k)\\\\f(x)=x^2+2x-3\to a=1,\ b=2,\ c=-3\\\\h=\dfrac{-2}{2(1)}=\dfrac{-2}{2}=-1\\\\k=f(-1)=(-1)^2+2(-1)-3=1-2-3=-4\\\\f(x)=(x-(-1))^2-4=(x+1)^2-4$

4 0

3 years ago