Answer:
y = -2x + 30
Step-by-step explanation:
Firstly, choose 2 coordinates ( I chose [1,28] and [2,,26] ) next use y2-y1/x2-x1 to find your slope, in this case it is -2. Next, take two points and plug them into your equation with your slope to find your b, for this case the b is 30. Put it all together and you get y = -2x + 30
Brainliest would be appreciated. :-)
Answer:
Pr(opposite face is tail) = 1/4. = Option (a)
Step-by-step explanation:
From the illustration,
=> 1st coin has head both side
=> 2nd coin has tail both side
=> 3rd coin has head and tail.
If we toss a coin at random and head comes up; it implies that it can never have been the 2nd coin.
Consequently, we are left with only two coins (the 1st and the 3rd coin). Now, total number of coin that remain in the sample = 2.
Meanwhile,
=> the probability of tail from the 1st coin is ZERO
=> the probability of tail from the 3rd coin is 1/2.
Therefore, the probability of opposite face is tail is:
Pr(opposite face is tail) = (0+ 1/2)/2 = 1/4
Correct because if you go to x=-1, f(x) should be 1/32. then one more to x = 0, f(X) should be 1/16. it it multiplied by 2 for each step of 1 confirmed
Answer:
Part A)
5th and 6th Choices
Part B)
Step-by-step explanation:
We are given a parabola with focus at (2, -4) and the directrix given by <em>y</em> = -6.
Part A)
Since our directrix is an equation of <em>y</em>, the distance from any point (x, y) on the parabola to the directrix will simply be the absolute value of the difference of the y-values. Hence:
Again, we will use the distance formula. Let the point (x, y) be (x₂, y₂) and our focus (2, -4) be (x₁, y₁). Then by the distance formula:
Hence, our answers are the 5th and 6th choices.
Part B)
By definition, any point (x, y) on the parabola is equidistant to the focus and the directrix. Hence:
Square both sides. We may remove the absolute value as anything squared yields a positive. Hence:
Square:
Rearrange:
Combine like terms:
Divide both sides by 4. Hence, our equation is:
Answer:
7x - 7
Step-by-step explanation:
Product of x and 7 = 7x
7 minus 7x
7x - 7
Hence the expression is :
7x - 7