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Volgvan
3 years ago
14

1. Solve the equation for x.   x² = 729   The solution of the equation is x =

Mathematics
2 answers:
Likurg_2 [28]3 years ago
5 0

The correct answer is 27. To solve this, you must take the square root of both sides. This leaves you with x = 27.

Doss [256]3 years ago
3 0

Answer:

x=27 or x=−27

Step-by-step explanation:

x^{2}=729

Step 1: Take square root.

x=±\sqrt{729}

x=27 or x=−27

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Describe the relationship between two variables when the correlation coefficient r is one of the following. (a) near –1 strong
zepelin [54]

Answer:

a) strong negative linear correlation.

b) Weak or no linear correlation.

c) strong positive linear correlation.

Step-by-step explanation:

The correlation coefficient r measures the strength and direction (positive or negative) of two variables. The correlation coefficient r is always between -1 and 1. When the coefficient r is negative then the direction of the correlation is downhill (negative) and when it's positive then it's an uphill correlation (positive). Similarly, as the coefficient is closer to -1 or 1 the correlation is stronger, with zero being a non linear relationship.

Now back to the question:

a) Near -1: as we said before, this means an strong negative (-1) linear correlation.

b) Near 0: weak or no linear correlation (we cannot say if its positive or negative because we don't know it it's near zero from the right (positive numbers) or the left (negative numbers)

c) Near 1: strong positive (close to +1) linear correlation

3 0
3 years ago
9-3(x-6) = 2(x-4)-10
vazorg [7]

Answer: x = 9

Step-by-step explanation: your welcome

8 0
3 years ago
Read 2 more answers
Simplify into one fraction -2/x+3 - 4/x-5
sergiy2304 [10]
Multiply and divide by the product of the denominators.
\dfrac{-2}{x+3}+\dfrac{-4}{x-5}=\dfrac{-2(x-5)-4(x+3)}{(x+3)(x-5)}\\\\=\dfrac{-6x-2}{x^{2}-2x-15}
6 0
4 years ago
Read 2 more answers
Find all real numbers x such that 4x - 18 > 2 and-17x - 8 < -25
Rashid [163]
The answer is on the bottom. Hope this helps.
7 0
3 years ago
Read 2 more answers
In a volatile housing market, the overall value of a home can be modeled by V(x) = 415x2 - 4600x + 200000, where V
tensa zangetsu [6.8K]

Answer:

See below

Step-by-step explanation:

This is a bowl shaped parabola ( due to the positive coefficient of x^2)

   the minimum value (vertex )

      will occur at x value = - b/2a = - -4600/2(415) = 5.54 years

  the minimum VALUE will be the quation with this value of x inserted

 415 (5.54)^2 - 4600(5.54) + 200 000 = $ 187 253.01

The home will reach a minumum value of 187253.01 in 5.54 years

4 0
2 years ago
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