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Lapatulllka [165]
3 years ago
9

What process consists of a logical chain of steps that show that a statement must be true

Mathematics
1 answer:
Natasha2012 [34]3 years ago
7 0

It is called a Direct Proof

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Solve the equation 12+ 0.35×=20.05
lbvjy [14]
12 + 0.35X = 20.05
12 + 0.35X - 12 = 20.05 - 12
0.35X = 8.05 
0.35X/0.35 = 8.05/0.35
X = 23
Hope this helps!! 
8 0
3 years ago
I need help with the steps. The answer is (5,2)
Elden [556K]

So with this, I will be using the substitution method. With the first equation, substitute (y+3) into the x variable and solve for y:

y+3+y=7\\2y+3=7\\2y=4\\y=2

Next, now that we have the value of y, substitute it into either equation to solve for x:

x+2=7\\x=5\\\\x=2+3\\x=5

<u>And this is how you get your final answer (5,2).</u>

5 0
3 years ago
Which of the following ordered pairs represents the solution to the system given below?
pentagon [3]
(3,-1) just fill it in and the only one that makes sense is the first one 
4 0
3 years ago
Find two points on the line to be graphed. y-5=0
Nonamiya [84]
Any point with the y of 5 could be the answer
3 0
3 years ago
Which of the following is a polynomial?
Makovka662 [10]

Answer:

D

Step-by-step explanation:

Terms are separated by addition and subtraction symbols.

Polynomials consist of terms that are constant and/or variable. The variable terms must have 0 or positive exponents. Polynomials will not consist of division of variable expressions.

Examples of polynomials:

5

5x

6-x

24x^9-x

Examples of non-polynomials:

\sqrt{x}

\frac{x+2}{x-4}

In general a polynomial when written in standard form should be comparable to:

a_nx^n+a_{n-1}x^{n-1}+\cdots a_3x^3+a_2x^2+a_1x+a_0

where the a's could be zero and all the exponents,n, are positive or 0.

D is comparable since all of these are 0 except x_4 which is 1 and x_0 which is -2.

Also the other choices have either division by variable expressions and/or negative exponents on variables.

5 0
3 years ago
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