For number 5- I’m guessing two but i dont know
Answer:
13.71 m
Step-by-step explanation:
Draw the tunnel so the width marks the zeroes at (-12,0) and (12,0)
then y = a ( x+12)(x-12) is the equation..
..to calculate 'a' sub in the point 9, 6 (where the width is 18)
6 = a ( (9+12)(9-12) shows a = -2/21
y = -2/21 (x+12)(x-12) Max is when x = 0
-2/21 ( 12)(-12) =<u> 288/21 = 13.71 m </u>
Answer:
Probability by definition is the extent to which an event is likely to occur, measured by the ratio of the favourable cases to the whole number of cases possible.
Since number of elements in the set of favourable cases is less than or equal to the number of elements in the set of whole number of cases, their ratio would always end up being 1 or less than one.
Probability equals one when favourable number of cases are same as that of the whole number of cases and probability equals zero when there is no favourable case
To get a fraction into a decimal, divide the numerator (the top of the fraction) by the denominator (the bottom). In this case, do 6 divided by 20.
You can also think the division bar (/) as "divided by." So 6 divided by 20.
6 divided by 20 = 0.30
To get a decimal into a percent, multiply by 100 (move the decimal point two places to the right). Then put % at the end.
0.30 = 30%
Answer:
a = -8
Step-by-step explanation:
-5/2 a + 5 = 25
Subtract 5 from each side
-5/2 a + 5-5 = 25-5
-5/2 a = 20
Multiply each side by -2/5
-2/5 *-5/2 a = 20*-2/5
a = -8