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xeze [42]
3 years ago
11

How would you write the equation

Mathematics
2 answers:
m_a_m_a [10]3 years ago
8 0
83/84_jrie6/73 i think thats how it is
timofeeve [1]3 years ago
5 0

Answer:

What equation?

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360 kilometers is 24 percent of what number
eduard
360 kilometers is 24 percent of 1500 kilometers. Hope it help!
7 0
4 years ago
Let me know how to do this?
kirza4 [7]
I think it’s 32 because, assuming the sides are equal, 12+20 equals 32
8 0
2 years ago
Read 2 more answers
A shadow 12 meters long is cast by a fir tree that is 16 meters tall. What is the length of the shadow cast by a nearby ash tree
mrs_skeptik [129]

Answer: 5 m

Step-by-step explanation:

Given

Length of 16 m fir tree is 12 m

length of the ash tree is 8 m

Suppose x is the length of the ash tree

angle c made by fir and ash tree will be same as shown in figure

\Rightarrow \tan c=\dfrac{16}{12}=\dfrac{8}{x}\\\\\Rightarrow x=8\times \dfrac{12}{16}\\\\\Rightarrow x=5\ m

4 0
3 years ago
Which equation has x = -i and x = = 21v3 as two of its solutions?
Drupady [299]

Answer:

The equation in option A is correct.

Step-by-step explanation:

Given the equation

\:y=x^4+13x^2+12

Let us find the solution by setting y=0

x^4+13x^2+12=0\:\:\:\:\:

\mathrm{Rewrite\:the\:equation\:with\:}u=x^2\mathrm{\:and\:}u^2=x^4

u^2+13u+12=0

if ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)

u+1=0\quad \mathrm{or}\quad \:u+12=0

u=-1,\:u=-12

\mathrm{Substitute\:back}\:u=x^2,\:\mathrm{solve\:for}\:x

x^2=-1,\:x^2=-12

solving

x^2=-1

\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}

x=\sqrt{-1},\:x=-\sqrt{-1}

x=i,\:x=-i            ∵ \:\sqrt{-1}=i

solving

x^2=-12

\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}

x=\sqrt{-12},\:x=-\sqrt{-12}

x=2\sqrt{3}i,\:x=-2\sqrt{3}i

Hence, the solutions are:

x=i,\:x=-i,\:x=2\sqrt{3}i,\:x=-2\sqrt{3}i

Therefore, the equation in option A is correct.

6 0
3 years ago
There are 150 marigold plants in a back yard. Each month, the number of marigold plants decreases by 15%. There are 125 sunflowe
AleksandrR [38]
Part A-For marigold plants X, a geometric sequence has a general form of:

X = Xo * (1 + r)^n

where r = -15% = -0.15   (negative since it is decreasing)

Xo = the initial amount of marigold plants = 150

X = 150 * (1 – 0.15)^n

X = 150 (0.85)^n

 

4 0
4 years ago
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