Answer:
The roots are real and unequal (3, -3)
Step-by-step explanation:
x²-9=0
ax²+bx+c=0
Comparing we get,
a= 1
b= 0
c = -9
Determinant: b²-4ac
= 0² - 4(1)(-9)
= 36>0
D > 0
Therefore, the equation has real and unequal roots.
Algebraic identity:
x² - a² = (x-a)(x+a)
Using this identity
x²-9 = (x+3)(x-3)
Roots are 3 and -3 which are real and not equal to each other
Hope this answer helps you ..
Answer: The answer is one-tenth part.
Step-by-step explanation: Given that Greg is pouring an entire gallon of milk into 10 glasses. We are to find the part of the gallon in each glass.
We will be using unitary method here as follows.
In 10 glasses, the quantity of the milk contained is = 1 gallon.
Therefore, in 1 glass, the quantity of the milk contained is given by
Thus, one-tenth part of a gallon will be in each glass.
Answer:
144
Step-by-step explanation:
first digit of the code: only 2 and 4 are the only even numbers availible, so only 2 possibilities for the first digit.
2nd digit of code: 2,5,7,9,1 so 6 possibilities for the 2nd digit.
3rd digit of code: 2,5,7,9,1 so 6 possibilities for the 3rd digit.
4th digit of code: only 7 and 9 are greater tyhan 6 so only 2 possibilities for the 4th digit.
SO...
2 x 6 x 6 x 2 = 144
I personally haven't but it is possible
Answer:
Nikki grows 20 tomato plants and she measures their heights.
We want to complete the frequency table.
All we have to do is count the number of values that fall between each range.
The values are:
5 10 12 16 14
17 20 15 10 7
13 11 6 18 15
6 12 17 8 12
Height Frequency
-> 5 ≤ h < 10 5
10 ≤ h < 15 8
15 ≤ h < 20 6
20 ≤ h < 25 1
