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Andru [333]
3 years ago
15

-X + 8 + 3x = x-6 Help

Mathematics
2 answers:
Alexeev081 [22]3 years ago
8 0
The answer would be, x = -14
rosijanka [135]3 years ago
7 0

Answer:

\boxed{x = -14}

Step-by-step explanation:

Solve  \: for  \: x:  \\  \implies  - x+8 + 3x=x - 6 \\  \\ Grouping  \: like \:  terms,  \:  - x + 8 + 3x = ( - x + 3x) +8  :  \\ \implies ( - x+3x)+8=x - 6  \\  \\ 3x - x=2x: \\ \implies \boxed{2x} +8=x - 6  \\  \\ Subtract \:  x \:  from \:  both \:  sides:   \\ \implies( 2x- \boxed{x})+8=(x- \boxed{x})-6  \\  \\ 2x - x = x:  \\ \implies \boxed{x}+8=(x-x)-6  \\  \\ x - x = 0:  \\   \implies x+8=-6  \\  \\ Subtract \:  8  \: from  \: both  \: sides:  \\ \implies x + (8 -  \boxed{8}) = -   \boxed{8} - 6 \\  \\ 8 - 8 = 0 : \\ \implies   x =  - 8 - 6 \\  \\  - 8 - 6 =  - 14 :  \\ \implies  x =  - 14

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Which expression is the factorization of x2 + 10x + 21?
maxonik [38]

Answer:

(x + 3)(x + 7)

Step-by-step explanation:

Find two numbers that when added up to , they ALSO have to multiply up to 21. This is simple because of the fact that there is no leading coefficient greater than 1⃣.

7 0
3 years ago
Please help me 50 points.
kolezko [41]
First we have to convert 60 feet to inches.  since there are 12 inches in a foot we will multiply by 12
60×12=720
since the real thing is 720 inches and the scale drawing is 15 inches we can make a ratio
720:15
then simpliy
48:1
would be your answer.  It means that for every 48 inches it is in real life the scale drawing will be one inch

3 0
3 years ago
Read 2 more answers
The indefinite integral can be found in more than one way. First use the substitution method to find the indefinite integral. Th
Fantom [35]

Answer:

∫6x^5(x^6-2)\,dx = \frac{1}{2}(x^6-2)^2+C

Step-by-step explanation:

To find:

∫6x^5(x^6-2)\,dx

Solution:

Method of substitution:

Let x^6-2=t

Differentiate both sides with respect to t

6x^5\,dx=dt

[use (x^n)'=nx^{n-1}]

So,

∫6x^5(x^6-2)\,dx = ∫ t\,dt = \frac{t^2}{2}+C_1 where C_1 is a variable.

(Use ∫t^n\,dt=\frac{t^{n+1} }{n+1} )

Put t=x^6-2

∫6x^5(x^6-2)\,dx = \frac{1}{2}(x^6-2)^2+C_1

Use (a-b)^2=a^2+b^2-2ab

So,

∫6x^5(x^6-2)\,dx = \frac{1}{2}(x^6-2)^2+C_1=\frac{1}{2}(x^{12}+4-4x^6)+C_1=\frac{x^{12} }{2}-2x^6+2+C_1=\frac{x^{12} }{2}-2x^6+C

where C=2+C_1

Without using substitution:

∫6x^5(x^6-2)\,dx = ∫6x^{11}-12x^5\,dx = \frac{6x^{12} }{12}-\frac{12x^6}{6}+C=\frac{x^{12} }{2}-2x^6+C

So, same answer is obtained in both the cases.

7 0
2 years ago
PLEASE HELP ASAP WILL MARK BRANLIEST<br><br> did i get the right answer or is it wrong?
Nesterboy [21]

Answer:

<h2><em><u>62</u></em><em><u>.</u></em><em><u>2</u></em></h2>

Step-by-step explanation:

4n × 2 + 43

<em>[</em><em>By</em><em> </em><em>putting</em><em> </em><em>the</em><em> </em><em>value</em><em> </em><em>of</em><em> </em><em>n</em><em> </em><em>=</em><em> </em><em>2</em><em>.</em><em>4</em><em>]</em>

= (4 ×2.4) × 2 + 43

= 9.6 × 2 + 43

= 19.2 + 43

= <em><u>62.2 (Ans)</u></em>

4 0
3 years ago
Read 2 more answers
Naomi's fish is 40 millimeters long. Her guinea pig is 25 centimeters long.
user100 [1]

Answer:

21cm

Step-by-step explanation:

<em>Solution,</em>

<em>Length of fish=40mm=40/10=4cm</em>

<em>Length of pig=25cm</em>

<em>Now, </em>

<em>Difference of their length=25cm-4cm=21cm</em>

<em />

<em>Hence,the pig is 21cm long than the fish</em>

5 0
2 years ago
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