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Lesechka [4]
3 years ago
12

X to the third plus x minus 7 equals -3 square root of x - 1

Mathematics
1 answer:
Ugo [173]3 years ago
5 0

Answer:

  x ≈ 1.5004

Step-by-step explanation:

We suppose your equation is ...

  x^3+x-7=-3\sqrt{x-1}

Squaring both sides and subtracting the right side gives ...

  x^6 +2x^4 -14x^3 +x^2 -23x +58 = 0

This 6th-degree equation has two positive real roots, near x=1.5, and x=2. The root at x=2 is extraneous. The one near x=1.5 is irrational.

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I need help with this please:/
ser-zykov [4K]
4.5
pi is about 3.14 and root 23 is about 4.8 - the only number between these values is 4.5
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3 years ago
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Jillian ran 40 miles in one week. Her friend Lacy ran 5/8 the distance that Jillian ran . How many miles did Lacy run ?
Korvikt [17]
Lacy ran 25 miles.

40/8=5  5*5=25
5 0
3 years ago
Use linear approximation to estimate f (2.85 )given that f (3 )equals 2 and f prime (3 )equals 5.
Allisa [31]

Answer:

Step-by-step explanation:

Given that,

f(3) = 2

f'(3) = 5.

We want to estimate f(2.85)

The linear approximation of "f" at "a" is one way of writing the equation of the tangent line at "a".

At x = a, y = f(a) and the slope of the tangent line is f'(a).

So, in point slope form, the tangent line has equation

y − f(a) = f'(a)(x − a)

The linearization solves for y by adding f(a) to both sides

f(x) = f(a) + f'(a)(x − a).

Given that,

f(3) = 2,

f'(3) = 5

a = 3, we want to find f(2.85)

x = 2.85

Therefore,

f(x) = f(a) + f'(a)(x − a)

f(2.85) = 2 + 5(2.85 - 3)

f(2.85) = 2 + 5×-0.15

f(2.85) = 2 - 0.75

f(2.85) = 1.25

5 0
3 years ago
Find f(-3) if f(x) = x^2.
Serggg [28]

Answer:

9

Step-by-step explanation:

f(-3)=-3×-3

= (-)(-)9

=+9

- into - covert into positive when you have square on x

hopefully, it works for you

6 0
4 years ago
Read 2 more answers
Additive inverse of -0.5
Veseljchak [2.6K]

Answer:

0.5

Step-by-step explanation:

If you add 0.5 to -0.5, it will equal 0.

4 0
2 years ago
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