Answer:
Step-by-step explanation:
We want to find the equation of a circle with a center at (7, 2) and a point on the circle at (2, 5).
First, recall that the equation of a circle is given by:
Where (<em>h, k</em>) is the center and <em>r</em> is the radius.
Since our center is at (7, 2), <em>h</em> = 7 and <em>k</em> = 2. Substitute:
Next, the since a point on the circle is (2, 5), <em>y</em> = 5 when <em>x</em> = 2. Substitute:
Solve for <em>r: </em>
<em />
<em />
Simplify. Thus:
Finally, add:
We don't need to take the square root of both sides, as we will have the square it again anyways.
Therefore, our equation is:
Answer:
1/8
Step-by-step explanation:
1/2 * 1/4 = 1/8
another way to think about it is: if there are 4 pieces in one half then you could double it and there would be 8 pieces of pie in total which would make one piece equal to 1/8
3500*10= 35,000 the answer to the question
Answer:
The correct answer is 54 rails.
Step-by-step explanation:
Max builds rail fences. For one style of fence, each section uses 3 vertical fence posts and 6 horizontal rails.
For every style of fence Max uses 3 vertical fence posts and 6 horizontal rails.
For every style of fence Max uses vertical fence posts and horizontal rails in the ratio of 1 : 2.
Max uses 27 posts . Therefore he needs to use 27 × 2 = 54 rails.
Therefore Max needs 54 rails for a fence that has 27 posts.
There are 15 grams of coco in the chocolate bar.
(30% of 50 is 15)
