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ycow [4]
3 years ago
8

Please help this is my last question

Mathematics
1 answer:
Ann [662]3 years ago
7 0

Answer:

  x = 12 cm

Step-by-step explanation:

The product of lengths from the secant intersection point to the "near" and "far" circle intersection points is the same for both secants. When one "secant" is a tangent, the lengths to the circle intersection points are the same (so their product is the square of the tangent segment length).

  8^2 = 4·(4 +x) . . . . . . measures in centimeters

  16 = 4 +x . . . . . . divide by 4

  12 = x . . . . . . . . . subtract 4

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The solution is <span>y = (x - 2)2 + 2</span>. Squaring (x - 2) rather than just x will shift the graph to the right 2 units. This can be seen by trying some test points and plotting the function. So its D


8 0
4 years ago
Find the perimeter and the area of the polygon with the given vertices (0,2),(5,2),(5,5),(0,5)
tamaranim1 [39]
From pt 1 to pt 2 there is a three unit change, from pt 2 to pt 3 there is a 3 unit change, from 3 to 4 there is a 5 unit change, and from 4 to 1 there is a 3 unit change. Add those together 3+3+3+5= 14 units is perimeter

To find area: look at image. answer is 30 units

4 0
3 years ago
The graphs of $f$ and $g$ are shown. Describe two different transformations from the graph of $f$ to the graph of $g$ . 2 lines
zhenek [66]

Let's convert the word descriptions into mathematical equations first for illustration.

f(x) = x^2 - x - 12

g(x) = -2.5x - 2

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x^2 - x - 12 = -2.5x - 2

Then, we simplify by transposing and combining like terms.

x^2 - x + 2.5x -12 + 2 = 0

x^2 + 1.5x - 10 = 0

Since this is a quadratic equation, we find the roots by using the quadratic formula

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Thus, the answer is x = 2.5, -4.

5 0
2 years ago
Convert this franction into a percentage 9/12?
kolbaska11 [484]

<span>Hello, Yoloalanis. In order to solve this question that you have just posted, you only have to do a few simple steps. So, We can do this!</span>

<span />Let's start with your fraction. You will first have to change 9/12 into a decimal. In order to do this, you will have to divide the numerator by the denominator. A numerator is also known as the top part of the fraction. A denominator is the bottom part of the fraction. So, when you divide nine by twelve, you get 0.75 as a decimal. Now, you just have to multiply the decimal by 100 or to make it simpler, just move the decimal two places to the right. To sum it all up, you will get 75%.

Hope it helps :)

5 0
4 years ago
Read 2 more answers
The roof on a shed is a square-based pyramid. if the base has a side length of 10 feet and the slant length of the root is 9.4 f
max2010maxim [7]
We know that 

[the area of the root]=4*[area of one lateral triangle side]

area of one lateral triangle side=b*h/2
b=10 ft
h=9.4 ft
area of one lateral triangle side=10*9.4/2-----> 47 ft²

[the area of the root]=4*[47]-------> 188 ft²

the answer is
the area of the root is 188 ft²



3 0
4 years ago
Read 2 more answers
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