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dangina [55]
2 years ago
5

Work out the diameter of a circle with area = 9 cm?

Mathematics
1 answer:
Nataly [62]2 years ago
4 0

Answer:

1.69

Step-by-step explanation:

Area of a circle =pi x r^2

9/pi =2.864788... =radius squared

Square root of 2.864788= 1.692568...

=1.69

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Help me please!
Ksivusya [100]

Answer:

sum of a triangle adds up to 180 degrees

a+b+c=180

35+52+93=180




6 0
3 years ago
Solve for v: -10=-5/4v
vagabundo [1.1K]

Answer:

v = 8

Step-by-step explanation:

-10= -5/4v first multiply both sides of the equation by -4/5

-10(-4/5) = v this cancels out the right side.

multiply the left side.

so you are left with 40/5 = v

next, simplify you will get 8=v

8 0
3 years ago
Read 2 more answers
Which method will determine the volume of the prism with dimensions 2 times 2 1/4 times 4 shown below
Tems11 [23]
Was increased by 1 inch, the new measure of each side would be 4 inches.
5 0
3 years ago
5x - 5 = 5(x+1) need help
bezimeni [28]

Answer:

There are no solutions.

Step-by-step explanation:

5x-5=5(x+1)

5x-5=5x+5

    +5     +5

5x=5x+10    

-5x -5x

0x=10

There are no possible answers.

Hopefully this helps.

7 0
2 years ago
How do you know a radical expression is in simplest form?
Diano4ka-milaya [45]
Answer: To know whether a radical expression is in simplest form or not you should put the numbers and letters inside the radical in terms of prime factors. Then, the radical expression is in the simplest form if all the numbers and letters inside the radical are prime factors with a power less than the index of the radical

Explanation:

Any prime factor raised to a power greater than the index of the root can be simplified and any factor raised to a power less than the index of the root cannot be simplified

For example simplify the following radical in its simplest form:


\sqrt[5]{3645 a^8b^7c^3}

1) Factor 3645 in its prime factors: 3645 = 3^6 * 5

2) Since the powr of 3 is 6, and  6 can be divided by the index of the root, 5, you can simplify in this way:

- 6 ÷ 5 = 1 with reminder 1, so 3^1 leaves the radical and 3^1 stays in the radical

3) since the factor 5 has power 1 it can not leave the radical

4) the power of a is 8, then:

8 ÷ 5 = 1 with reminder 3 => a^1 leaves the radical and a^3 stays inside the radical.

5) the power of b is 7, then:

7 ÷ 5 = 1 with reminder 2 => b^1 leaves the radical and b^2 stays inside the radical

6) the power of c is 3. Since 3 is less than 5 (the index of the radical) c^3 stays inside the radical.

7) the expression simplified to its simplest form is

3ab \sqrt[5]{3.5.a^3b^2c^3}

And you know it cannot be further simplified because all the numbers and letters inside the radical are prime factors with a power less than the index of the radical.
7 0
3 years ago
Read 2 more answers
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