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kap26 [50]
2 years ago
6

100 POINTS + BRAINLIEST !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11 Solve x³ - 9x^(1.5) + 8 = 0

Mathematics
2 answers:
vesna_86 [32]2 years ago
4 0

Your problem → solve x3 - 9x^(1.5) + 8 = 0

Answer:

3 Possible Answers!

X = 1

Or X = \frac{-1\sqrt[+]{33} }{2}

or X = \frac{-1\sqrt[-]{33} }{2}

Step-by-step explanation:

x3-9x1.5+8=0⇒x3-9x+8=0⇒x3-x2+x2-x-8x+8=0  

⇒x2(x-1)+x(x-1)-8(x-1)=0⇒(x-1)(x2+x-8)=0⇒(x-1)=0or(x2+x-8)=0

⇒x=1or(x2+x-8)=0Roots of (x2+x-8)=0

comparing~ the~ given~ equation~ with~ the~ standard~ quadratic~ equation ~ax2+bx+c=0,we get, a=1,b=1,c=-8.∴Δ=b2-4ac=(1)2-4(1)(-8)=1+32

=33∴√Δ=√33Now, α=-b+√Δ2a =-(1)+√332⋅1

Now, α=-b+√Δ2a =-(1)+√332⋅1 =-1+√332 and, β=-b-√Δ2a

\frac{-1\sqrt[-]{33} }{2}

               

VLD [36.1K]2 years ago
3 0

Answer:

x=1, x=4

Step-by-step explanation:

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1 3/5 times 2 1/2 how much does it equal
pav-90 [236]

Answer:

If the problem is asking 1\frac{3}{5} * 2\frac{1}{2} then the answer is 4

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Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
1. If a bicycle wheel has a diameter of 15 in. How far will the wheel rotate in 10 rotations?​
WARRIOR [948]

Answer:

150 pi inches or 471.239 inches traveled

Step-by-step explanation:

First, close your eyes, and think about the distance a bike travels after one rotation of the wheel.

You will come to the realization that a full rotation of the wheel makes you travel the circumference of the wheel

The formula for circumference is 2(pi)(r) or (pi)(diameter)

We are given diameter, so let's find distance traveled for one rotation

pi(15 inches) = 15pi inches per rotation.

There are 10 rotations, so:

(15pi inches/rotation)(10 rotations) = 150pi inches travelled

150 x pi = 471.239 inches traveled

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Evaluate: −9^4<br><br> A) −36 <br><br> B) −6,561 <br><br> C) 36 <br><br> D) 6,561
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I'm not entirely sure but it should be (3/5) together. For pen the probability is (5/20) and for crayon is (12/20) add them equals (12/20) simply equals (3/5) HOPE IT HELPS
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