Can a genius help me with this question? Am stuck on this question and show your working please.1. Calculate the circumference of a circle with a radius of 3cm.

2. A circle with a radius of 10cm has a circumference of...?

3. Calculate a circumference of a circle with a diameter of 13cm.

4. A circle has a diameter of 9.5cm.What is the distance around the circle?

How do you calculate the circumference of a circle?

When would you use 2nr?

When would you use nd?

Come up with your own examples(at least two) to show how to calculate the circumference of a circle.

Answers

Answer 1

Answer:

1. The circumference of a circle is 2πr, and when we plug in 3 for r, we get 6π.

2. We'll use the same formula and plug in 10 for r, giving us 20π.

3. The formula we use in this case is πd, and when we plug in 13 for d, we get 13π.

4. Same formula from 3, we plug in 9.5 for d and get 9.5π.

5. You can calculate the circumference of a circle using 2 formulas, C=2πr (where r=radius and C=circumference) and C=πd (where d=diameter and C is circumference).

6. You use 2πr when the radius is given.

7. You use πd when the diameter is given.

8. 2 examples could be to use the 2 formulas.

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mike is taking a his social studies test . mike was only able to finish 1/6 of the test in 1/2 hour. how long will it take him to finish the test?

Answers

$1-(1)/(6)=(5)/(6)\n\n\begin{array}{ccc}(1)/(6)\ of\ the\ test&-&(1)/(2)\ h\n\n(5)/(6)\ of\ the\ test&-&x\ h\end{array}\ \ \ \ |cross\ multiply\n\n\n(1)/(6)x=(1)/(2)\cdot(5)/(6)\n\n(1)/(6)x=(5)/(12)\ \ \ \ \ |multiply\ both\ sides\ by\ 6\n\n\boxed{x=(5)/(2)=2.5\ (h)}\leftarrow time\ he\ will\ have\ to\ do\ the\ test\n\n\ntotal\ test\ time:2.5\ h+0.5\ h=3\ h$

1/2*6 = 3. It will take him 3 hours to finish his test if he continues on the same rate

If the class started at 11:30 A.M. and ended at 12:25 P.M., how long did the class last?

Answers

Answer:

55 minutes

Step-by-step explanation:

The sum of two consecutive odd integers is 236. What is smaller integers

Answers

I'll say the first integer is x. The next consecutive odd number would be x+2. If the sum of the odd integers is 236, the equation would be
x + (x + 2) = 236
solve for x
2x + 2 = 236
subtract 2 from each side of the equation
2x = 234
divide both sides by 2
x = 117
117 is the first odd integer. to find the other integer (x + 2), substitute 117 for x, and you have 117 + 2, which equals 119
The two consecutive odd integers that add up to 236 are 117 and 119.

Someone help me please!

Answers

Answer:

Your answer is no.

Step-by-step explanation:

It is only proportional up till 3/84, the next one is 4/112, not 4/100

How to find an equation of line parallel to a line?

Answers

If two lines are parallel, then they have the same slope. Take the slope
of the line that you know, and use it for the new line. If you also need to
find the intercept of the new line, then you need some more information ...
the intercept is not the same as the line that you know.

Final answer:

To find the equation of a line parallel to a given line, identify the slope of the given line and choose any point on that line, then use the point-slope formula to find the equation of the parallel line.

Explanation:

To find the equation of a line parallel to a given line, follow these steps:

Identify the slope of the given line. Let's call it 'm'.
Select any point on the given line. Let's call the coordinates of this point (x₁, y₁).
Use the point-slope formula, y - y₁ = m(x - x₁), where (x, y) represents any point on the parallel line.
Simplify the equation to get the final equation of the line parallel to the given line.

Let me know if you need further assistance!

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Solve the equation by completing the square. Round to the nearest tenth.x^2 + 8x = 10

A. 1.1, 9.1
B. 1.1, -9.1
c. -1.1, 9.1
D. -1.1, -9.1

Answers

B.
1.1, -9.1

$x^(2) +8x=10$

Answer: The correct option is (B) 1.1, -9.1.

Step-by-step explanation: We are given to solve the following quadratic equation by the method of completing the square.

$x^2+8x=10~~~~~~~~~~~~~~~~(i)$

In completing the square method, we need to make left hand side of the above given equation as a perfect square trinomial.

From equation (i), we have

$x^2+8x=10\n\n\Rightarrow x^2+2* x* 4+4^2=10+4^2\n\n\Rightarrow (x+4)^2=10+16\n\n\Rightarrow (x+4)^2=26\n\n\Rightarrow x+4=\pm√(26)\n\n\Rightarrow x=-4\pm √(26)\n\n\Rightarrow x=-4\pm 5.09\n\n\Rightarrow x=-4+5.09,~~~~~x=-4-5.09\n\n\Rightarrow x=1.09,~~~~~~~~~\Rightarrow x=-9.09.$

Rounding to the nearest tenth, we get

$x=1.1,~~-9.1.$

Thus, the required solution is x = 1.1, -9.1.

Option (B) is CORRECT.

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