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2 years ago

What is the justification for each step taken from line 2 to line 3?

Mathematics

2 answers:

matrenka [14]2 years ago

7 0

2x was subtracted from both sides.

A. Subtraction Property of Equality

ElenaW [278]2 years ago

6 0

the answer is A

hope it helps

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Which function is the inverse of g(x)3x-15

Korolek [52]

Answer:

Inverse of g(x)=x+15/3

Step-by-step explanation:

g(x)=3x-15

Let, g(x) be y

y=3x-15

Interchange x and y

x=3y-15

x+15=3y

y=x+15/3

5 0

2 years ago

Please help me will mark brainliest (if answered correctly)

Nikitich [7]

Answer:

64 degree and 116 degree

Step-by-step explanation:

4y-44+3y+35=180(Linear pair)

7y=189

y=27

4(27)-44=64

3(27)+35=116

7 0

2 years ago

Which of the following would be an acceptable first step in simplifying the expression sinx/1-sinx

Paha777 [63]

$\bf \textit{difference of squares}
\\\\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)
\\\\\\
\textit{also recall that }sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)\\\\
-------------------------------$

$\bf \cfrac{sin(x)}{1-sin(x)}\implies \cfrac{sin(x)}{1-sin(x)}\cdot \cfrac{1+sin(x)}{1+sin(x)}\implies \stackrel{first~step}{\cfrac{sin(x)[1+sin(x)]}{[1-sin(x)][1+sin(x)]}}
\\\\\\
\cfrac{sin(x)[1+sin(x)]}{1^2-sin^2(x)}\implies \cfrac{sin(x)[1+sin(x)]}{cos^2(x)}
\\\\\\
\cfrac{sin(x)+sin^2(x)}{cos^2(x)}\implies \cfrac{sin(x)}{cos^2(x)}+ \cfrac{sin^2(x)}{cos^2(x)}
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\cfrac{sin(x)}{cos(x)}\cdot \cfrac{1}{cos(x)}+\cfrac{sin^2(x)}{cos^2(x)}\implies tan(x)sec(x)+tan^2(x)
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tan(x)[sec(x)+tan(x)]$

8 0

2 years ago

Read 2 more answers

What is the point slope and slope intercept form of 6,1 and 5,4

Keith_Richards [23]

M= -3
b= 19

y= -3x +19

please crown me brainliest

5 0

2 years ago

0.8 divided by 0.64.

gizmo_the_mogwai [7]

IT's just a simple conversion.
.
Ok. So, when you divide with decimal places, you have two options -
.
Suck it up and divide, or move the decimal places to the right as many times as needed, until the number is a whole number.
.
Choosing to move the decimal places to the right is the easy way out...
.
So?
.
Move decimal point to the right two places in both numbers!!
.
80 and 64.
.
So what is 80/64?
.
You got it!!
.
1.25.
.
Hope I helped!!

8 0

2 years ago

Read 2 more answers