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dem82 [27]
3 years ago
15

What is the area of the following circle? use 3.14 for pi and label your answer in units squared or square units.

Mathematics
2 answers:
vesna_86 [32]3 years ago
5 0
153.86 units squared!!!!!!!!!!!!!!!!
Alenkinab [10]3 years ago
4 0

Answer:

153. 86 units squared

Step-by-step explanation:

3. 14 x 7^2= 153. 86

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If the sides of a square are lengthened by 7 feet, the area becomes 121 square feet. How long is a side of the original square?
Bogdan [553]
Square root of 121 is 11.
11-7=4
A side of the original square is 4 feet.
5 0
3 years ago
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6 girls share 4 brownies equally. What fraction of the brownies does each friend get?
aliina [53]

Answer:

2/3

Step-by-step explanation:

You have 6 friends who want to share 4 brownies equally. You simply divide the 4 brownies by 6 people:

4/6 = 2/3 (simplified)

So each friend gets 2/3 of a brownies

[RevyBreeze]

3 0
2 years ago
What is true about the solution of x^2/2x-6=9/6x-18?
pogonyaev

Answer:

  • x = ±√3, and they are actual solutions
  • x = 3, but it is an extraneous solution

Step-by-step explanation:

The method often recommended for solving an equation of this sort is to multiply by the product of the denominators, then solve the resulting polynomial equation. When you do that, you get ...

... x^2(6x -18) = (2x -6)(9)

... 6x^2(x -3) -18(x -3) = 0

...6(x -3)(x^2 -3) = 0

... x = 3, x = ±√3

_____

Alternatively, you can subtract the right side of the equation and collect terms to get ...

... x^2/(2(x -3)) - 9/(6(x -3)) = 0

... (1/2)(x^2 -3)/(x -3) = 0

Here, the solution will be values of x that make the numerator zero:

... x = ±√3

_____

So, the actual solutions are x = ±3, and x = 3 is an extraneous solution. The value x=3 is actually excluded from the domain of the original equation, because the equation is undefined at that point.

_____

<em>Comment on the graph</em>

For the graph, we have rewritten the equation so it is of the form f(x)=0. The graphing program is able to highlight zero crossings, so this is a convenient form. When the equation is multiplied as described above, the resulting cubic has an extra zero-crossing at x=3 (blue curve). This is the extraneous solution.

7 0
3 years ago
Read 2 more answers
BrainiestI WILL GIVE BRAINLIEST look at the right angled triangle abc
marissa [1.9K]

Answer:

x = 90°

y = 40°

z = 40°

Explanation (Concepts) :

A straight line has total 180° angle. A square has 4 sides of each 90° angle. A triangle is build up of 180° interior angle.

Workouts:

z + 90° + 50° = 180°

z = 180° - 90° - 50°

z = 40°

=================

x + 90° = 180°

x = 180° - 90°

x = 90°

==================

50° + 90° + y = 180°

y = 180° - 90° - 50°

y = 40°

5 0
2 years ago
Read 2 more answers
Use a calculator to find the r-value of these data. Round the value three decimal places.​
Soloha48 [4]

Answer:

Option C. r=-0.901

Step-by-step explanation:

we know that

Using a Excel tool (Correl function)

see the attached table

The r-value is r=-0.901

8 0
3 years ago
Read 2 more answers
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