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emmainna [20.7K]
3 years ago
9

SOMEONE PLZ HELP IM SO LOST ILL GIVE U BRAINLIEST

Mathematics
1 answer:
hammer [34]3 years ago
6 0

Answer:

What is a Proof?

A series of steps, with justifications, that verifies a theorem or relationship exists

Types of Proofs

Two-column Proofs a table with two columns; the first column is the mathematical statement, and the second column is the justification

Paragraph Proofs a type of proof that explains the rationale for each step using complete sentences in paragraph form

Flow Chart Proofs a diagram that contains the steps of the proof and the justification for each one

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Which ordered pair is a solution for the system of equations? {3x−5y=152x−y=−4 (−5, −6) (0, 3) (2, 8) (−6, −11)
SashulF [63]
3x-5y =15

2x-y=-4 
multiply the equation by 5 and then subtract   equation 2 from equation 1
so 3x-5y =15
    10x-5y =-20
-7x =35 x =-5  
plug in the value of x in the second equation -10 -y =-4  - y= -4 +10 y =-6
x=-5 y=-6



7 0
4 years ago
Read 2 more answers
Peter is making new cushion covers for a chair. There are three sizes of
Lesechka [4]

Answer:

A 846 square inches

Step-by-step explanation:

Use the net:

Rectangle 1: (21 in + 3 in + 21 in + 3 in) by 15 in.

Rectangle 2: 21 in by 3 in

Rectangle 3: 21 in by 3 in

total area = sum of areas of 3 rectangles above.

total area = (48 in * 15 in) + 2(21 in * 3 in)

total area = 720 in^2 + 126 in^2

total area = 801 in^2

Answer: A 846 square inches

6 0
3 years ago
Please find the answer , it is a very importatnt question
Anna [14]

Step-by-step explanation:

The given expression is :

\dfrac{2-\sqrt5}{2+3\sqrt5}=\sqrt5 x+y ....(1)

Taking LHS of the above expression

\dfrac{2-\sqrt5}{2+3\sqrt5}

Rationalizing both denominator and numerator.

\dfrac{2-\sqrt5}{2+3\sqrt5}\times \dfrac{2-3\sqrt5}{2-3\sqrt5}=\dfrac{4-6\sqrt5-2\sqrt5+15}{2^2-(3\sqrt5)^2}\\\\=\dfrac{19-8\sqrt5}{4-45}\\\\=\dfrac{19-8\sqrt5}{-41}\\\\=\dfrac{\sqrt5 \times 8}{41}+(\dfrac{-19}{41})

Equation (1) becomes,

\dfrac{\sqrt5 \times 8}{41}+(\dfrac{-19}{41})=\sqrt 5\ x+y

Equating both sides,

x=\dfrac{8}{41} and y=\dfrac{-19}{41}

Hence, this is the required solution.

7 0
3 years ago
***<br> Write the rule for the value of the term of the geometric sequence:<br> -5, 10, 20, 40, ..
Gwar [14]

Answer: Well what I see Is 5 to 10 then 20 then 40 so we add to 30 then 40 and 50 so 5 10 20 40 70 110 160

Step-by-step explanation:

3 0
3 years ago
Multiplication of fractions
cupoosta [38]

Answer:

uh please provide a question

5 0
3 years ago
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