Answer:
x = -4/5 and -1/2
Step-by-step explanation:
"Finding zeroes" means find the x-values that make f(x) = 0, so we have...
0 = 10x² + 9x + 2
Use quadratic equation to solve...
x = [-9 ± √(9² - 4(10)(2))]/[2(10)]
x = [-9 ± √(81 - 80)]/20
x = [-9 ± √1]/20
x = [-9 ± 1]/20
x = (-9 + 1)/20 and (-9 - 1)/20
x = -8/20 and -10/20
x = -4/5 and -1/2
Answer: -1654
Step-by-step explanation:
Well you shaded in two of the six, so it is 2/6.
Answer:
Probability of winning on one try : 1.16060875e-8
Step-by-step explanation:
For the first first 4 numbers.
Probability is 1/46 for the first number. Since the numbers are different, and it doesnt matter the order, the second number has a probability now of 1/45, the third has a probability of 1/44 and the last one a probability of 1/43.
Since the probability is dependan of the results of hitting the other number the probability of the first for numbers is the multiple of the 4 probabilities.
So it is 1/46 * 1/45 * 1/44 * 1/43 = 1 / 3916440
And that number is then multiplied by the probabilty of hitting the last number. 1/22
So the final probability is :
1/86161680 = 1.16060875e-8
Answer: 54 words does Rachel type per minute
Step-by-step explanation:
Rachel types 162 words in 3 minutes Rachel types at a constant rate.
We have to find how many words does Rachel type per minute.
By definition of unit rate: all we do is divide 162 by 3 which gives us 54
