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V125BC [204]
3 years ago
9

A number decreased by 6 gives twice the number

Mathematics
2 answers:
alexgriva [62]3 years ago
5 0

Answer:

I think it's 4

Step-by-step explanation:

Pavel [41]3 years ago
5 0

Answer:

x-6=2x or x=-6

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, assuming you're wanting an equation, you just read the question.

x-6=2x

And, assuming you're wanting to SOLVE it, you would simply do as shown:

x-6=2x

-x    -x

x=-6

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

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Consider the region bounded by the curves y=|x^2+x-12|,x=-5,and x=5 and the x-axis
Tasya [4]
Ooh, fun

what I would do is to make it a piecewise function where the absolute value becomse 0

because if you graphed y=x^2+x-12, some part of the garph would be under the line
with y=|x^2+x-12|, that part under the line is flipped up

so we need to find that flipping point which is at y=0
solve x^2+x-12=0
(x-3)(x+4)=0
at x=-4 and x=3 are the flipping points

we have 2 functions, the regular and flipped one
the regular, we will call f(x), it is f(x)=x^2+x-12
the flipped one, we call g(x), it is g(x)=-(x^2+x-12) or -x^2-x+12
so we do the integeral of f(x) from x=5 to x=-4, plus the integral of g(x) from x=-4 to x=3, plus the integral of f(x) from x=3 to x=5


A.
\int\limits^{-5}_{-4} {x^2+x-12} \, dx + \int\limits^{-4}_3 {-x^2-x+12} \, dx + \int\limits^3_5 {x^2+x-12} \, dx

B.
sepearte the integrals
\int\limits^{-5}_{-4} {x^2+x-12} \, dx = [\frac{x^3}{3}+\frac{x^2}{2}-12x]^{-5}_{-4}=(\frac{-125}{3}+\frac{25}{2}+60)-(\frac{64}{3}+8+48)=\frac{23}{6}

next one
\int\limits^{-4}_3 {-x^2-x+12} \, dx=-1[\frac{x^3}{3}+\frac{x^2}{2}-12x]^{-4}_{3}=-1((-64/3)+8+48)-(9+(9/2)-36))=\frac{343}{6}

the last one you can do yourself, it is \frac{50}{3}
the sum is \frac{23}{6}+\frac{343}{6}+\frac{50}{3}=\frac{233}{3}


so the area under the curve is \frac{233}{3}
6 0
3 years ago
A carpect salesperson claims that a carpet on sid for $12.95 per square yard is 30% off its original price. What was its origina
Amiraneli [1.4K]
12.95      30
-------- =  ----
 x            100

1295  = 30x
-------    -----
30          30

x = 43.16666667
 
not sure how u want to round
8 0
3 years ago
Read 2 more answers
The equation
balandron [24]

Answer:

377282929191991929292

6 0
2 years ago
Mathematics can I have a hand.... :´)
iogann1982 [59]

Answer: I honestly don’t know

Step-by-step explanation: I’m so sorry

4 0
3 years ago
.......... ......................
MrRa [10]

Answer:

what do you need help on?

6 0
3 years ago
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