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Kryger [21]
4 years ago
9

81x^2 = 4 NEED HELP SOLVING QUADRATIC EQAUTIONS

Mathematics
2 answers:
ser-zykov [4K]4 years ago
8 0
X=-+.222222 this is what I calculated
irina [24]4 years ago
5 0

Answer:

x = ± \frac{2}{9}

Step-by-step explanation:

Given

81x² = 4 ( divide both sides by 81 )

x² = \frac{4}{81} ( take the square root of both sides )

x = ± \sqrt{\frac{4}{81} } = ± \frac{\sqrt{4} }{\sqrt{81} } = ± \frac{2}{9}

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Pls help... Find the area of the following circle ​
Inessa [10]

Answer:

=94.985m²

Step-by-step explanation:

Area = πr²

π=3.14

r=5.5

-

  Find the radius,

         11/2=r

          r=5.5

-

Area=

3.14x 5.5x 5.5

3.14x30.25

=94.985m²

4 0
3 years ago
X^2y^-6/x^-5y^3 what I'd this simplify
Andru [333]
Y^-3 / x^-3
= x^3/y^3
7 0
3 years ago
Will give brainliest
Dovator [93]

Answer:

GURL MY MATH TEACHER GAVE ME THE SAME SHEET A MONTH AGOO

YASS

1.) x is less than or equal to 3

2.) x greater than or equal to 2

3.) x < -1

4.)  x greater than or equal to 3

5.) x>2

6.)  x greater than or equal to 1

5 0
3 years ago
A survey taken in a large statistics class contained the question: "What's the fastest you have driven a car (in miles per hour)
hjlf

Answer:

NO

Step-by-step explanation:

To find out which observation to classify as an outlier, whether the largest or not, a very good approach or way to do this is to apply the 1.5(IQR) rule.

According to the rule, for finding the largest observation in the data that can be classified as an outlier, we would use the formula = Q3 + 1.5(IQR).

Q3 = 120

IQR = Q3 - Q1 = 120 - 95 = 25

Lets's plug these values into Q3 + 1.5(IQR)

We have,

120 + 1.5(25)

= 157.5

Since our max in the observation is given as 155, the largest observation in the data set cannot be set as an outlier because 157.5 which we got from our calculation is higher than the max value we have in the data set.

Our answer is NO.

However, the smallest observation should be set as outlier because:

Q1 - 1.5(IQR) = 95 - (1.5*25) = 57.5, which gives us an outlier that falls within our data range.

3 0
4 years ago
On a map, 1 inch equals 20 miles. two cities are 135 miles apart.what is the distance between the two cities on the map?
gregori [183]

On the map, a distance of 20 miles are represented by 1 inch .

So distance of 1 mile is represented by

\frac{1}{20} inch

And therefore, distance of 135 miles are represented by

135* \frac{1}{20} = \frac{135}{20} = 6.75 inches

7 0
3 years ago
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