<span>x = 4
Given the description of the triangles, you have 2 similar right triangles. The smaller triangle has a height of 20 and a base of 3x, while the larger has a height of (20+8) = 28 and a base of 4x + 2. We wish to determine the value of x. Since the triangles are similar, the ratio of corresponding sides will be a constant. So:
20/28 = (3x)/(4x+2)
(4x+2)20/28 = (3x)
(20/28)*4x+(20/28)*2 = (3x)
(80/28)*x+(40/28) = (3x)
(20/7)*x + 4/7 = 3x
4/7 = 3x - (20/7)*x
4/7 = (21/7)x - (20/7)*x
4/7 = x/7
4 = x
So the value of x is 4.</span>
Answer:i think it is y-y1=m(x-x1)
m is herein undefined.
Slope, m, is defined as change-of-y divided by change-of-x...
m=(y-y1)/(x-x1)
The mathematical concept of undefined means that the denominator is zero. This means that both values of x are equal.
(-4,-8)
This equation is x=-4
It is a vertical line and includes the point of y=-8.
Step-by-step explanation:
Answer:
8>_x>4
>_ this is greater than equal to symbol eight is greater than or equal to x is greater than 4
<span>20(−1.5r + 0.75)
here, you need to distribute the "20" to the inside of your parentheses. you'll be multiplying 20 and -1.5 first:
-30r
then 20*0.75 second:
-30r + 15 is your expanded expression. you can't combine like terms any further.</span>
What letters are used for sets?
We usually use capital letters such as A, B, C, S, and T to represent sets, and denote their generic elements by their corresponding lowercase letters a, b, c, s, and t, respectively. To indicate that b is an element of the set B, we adopt the notation b∈B, which means “ b belongs to B” or “ b is an element of B.